Commit Graph

252 Commits

Author SHA1 Message Date
Wido den Hollander
122fa379de storage: Allow multiple hosts for a storage pool
The current storage pools for NFS and iSCSI only require one host to
connect to. Future storage pools like RBD and Sheepdog will require
multiple hosts.

This patch allows multiple source hosts and rewrites the current
storage drivers.

Signed-off-by: Wido den Hollander <wido@widodh.nl>
2012-04-30 18:44:44 +08:00
Cole Robinson
cab1a9dee8 storage: lvm: use correct lv* command parameters
lvcreate want's the parent pool's name, not the pool path
lvchange and lvremove want lv specified as $vgname/$lvname

This largely worked before because these commands strip off a
starting /dev. But https://bugzilla.redhat.com/show_bug.cgi?id=714986
is from a user using a 'nested VG' that was having problems.

I couldn't find any info on nested LVM and the reporter never responded,
but I reproduced with XML that specified a valid source name, and
set target path to a symlink.
2012-04-16 08:00:15 -04:00
Daniel P. Berrange
ec8cae93db Consistent style for usage of sizeof operator
The code is splattered with a mix of

  sizeof foo
  sizeof (foo)
  sizeof(foo)

Standardize on sizeof(foo) and add a syntax check rule to
enforce it

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2012-03-30 11:47:24 +01:00
Zeeshan Ali (Khattak)
4f3287a415 Correct a check for capacity arg of storageVolumeResize()
Lets say I got a volume with '1G' allocation and '10G' capacity. The
available space in the parent pool is '5G'. With the current check for
overcapacity, I can only try to resize to <= '6G'. You see the problem?
2012-03-02 21:52:02 -07:00
Michal Privoznik
c0f722240d storage: fix typo
* src/storage/storage_driver.c (storageVolumeWipeInternal):
    s/ pfitzner33/pfitzner33/.
2012-02-29 11:44:23 +01:00
Alex Jia
f3e99e9920 storage: fix a typo
* src/storage/storage_driver.c (storageVolumeWipeInternal): s/shneier/schneier.

http://code.google.com/p/diskscrub/

Signed-off-by: Alex Jia <ajia@redhat.com>
2012-02-29 17:41:49 +08:00
Michal Privoznik
286088567d storage: Allow runtime detection of scrub
Currently, if scrub (used for wiping algorithms) is not present
at compile time, we don't support any other wiping algorithms than
zeroing, even if it was installed later. Switch to runtime detection
instead.
2012-02-16 09:09:43 +01:00
Cole Robinson
0ed86cfb51 storage: Don't unsparsify images when cloning
Input to the volume cloning code is a source volume and an XML
descriptor for the new volume. It is possible for the new volume
to have a greater size than source volume, at which point libvirt
will just stick 0s on the end of the new image (for raw format
anyways).

Unfortunately a logic error messed up our tracking of the of the
excess amount that needed to be written: end result is that sparse
clones were made very much non-sparse, and cloning regular disk
images could end up excessively sized (though data unaltered).

Drop the 'remain' variable entriely here since it's redundant, and
track actual allocation directly against the desired 'total'.
2012-02-07 14:53:45 -05:00
Laine Stump
90e4d681bc util: refactor virFileOpenAs
virFileOpenAs previously would only try opening a file as the current
user, or as a different user, but wouldn't try both methods in a
single call. This made it cumbersome to use as a replacement for
open(2). Additionally, it had a lot of historical baggage that led to
it being difficult to understand.

This patch refactors virFileOpenAs in the following ways:

* reorganize the code so that everything dealing with both the parent
  and child sides of the "fork+setuid+setgid+open" method are in a
  separate function. This makes the public function easier to understand.

* Allow a single call to virFileOpenAs() to first attempt the open as
  the current user, and if that fails to automatically re-try after
  doing fork+setuid (if deemed appropriate, i.e. errno indicates it
  would now be successful, and the file is on a networkFS). This makes
  it possible (in many, but possibly not all, cases) to drop-in
  virFileOpenAs() as a replacement for open(2).

  (NB: currently qemuOpenFile() calls virFileOpenAs() twice, once
  without forking, then again with forking. That unfortunately can't
  be changed without at least some discussion of the ramifications,
  because the requested file permissions are different in each case,
  which is something that a single call to virFileOpenAs() can't deal
  with.)

* Add a flag so that any fchown() of the file to a different uid:gid
  is explicitly requested when the function is called, rather than it
  being implied by the presence of the O_CREAT flag. This just makes
  for less subtle surprises to consumers. (Commit
  b1643dc15c added the check for O_CREAT
  before forcing ownership. This patch just makes that restriction
  more explicit.)

* If either the uid or gid is specified as "-1", virFileOpenAs will
  interpret this to mean "the current [gu]id".

All current consumers of virFileOpenAs should retain their present
behavior (after a few minor changes to their setup code and
arguments).
2012-02-03 16:47:39 -05:00
Zeeshan Ali (Khattak)
e545dd4ffe Implement virStorageVolResize() for FS backend
Currently only VIR_STORAGE_VOL_RESIZE_DELTA flag is supported.
2012-01-31 11:58:11 -05:00
Daniel P. Berrange
e95ef67b35 Introduce new API for generating random numbers
The old virRandom() API was not generating good random numbers.
Replace it with a new API virRandomBits which instead of being
told the upper limit, gets told the number of bits of randomness
required.

* src/util/virrandom.c, src/util/virrandom.h: Add virRandomBits,
  and move virRandomInitialize
* src/util/util.h, src/util/util.c: Delete virRandom and
  virRandomInitialize
* src/libvirt.c, src/security/security_selinux.c,
  src/test/test_driver.c, src/util/iohelper.c: Update for
  changes from virRandom to virRandomBits
* src/storage/storage_backend_iscsi.c: Remove bogus call
  to virRandomInitialize & convert to virRandomBits
2012-01-26 14:03:14 +00:00
Michal Privoznik
adb99a05b1 storage: Support different wiping algorithms
Currently, we support only filling a volume with zeroes on wiping.
However, it is not enough as data might still be readable by
experienced and equipped attacker. Many technical papers have been
written, therefore we should support other wiping algorithms.
2012-01-26 13:59:30 +01:00
Cole Robinson
275155f664 storage: Fix any VolLookupByPath if we have an empty logical pool
On F16 at least, empty volume groups don't have a directory under /dev.
The directory only appears once a logical volume is created.

This tickles some behavior in BackendStablePath which ends with
libvirt sleeping for 5 seconds while waiting for the directory to appear.
This causes all sorts of problems for the virStorageVolLookupByPath API
which virtinst uses, even if trying to resolve a path that is independent
of the logical pool.

In reality we don't even need to do that checking since logical pools
always have a stable target path. Short circuit the polling in that
case.

Fixes bug 782261
2012-01-25 13:15:35 -05:00
Osier Yang
380f326955 storage: Fix a potential crash when creating vol object
If the vol object is newly created, it increases the volumes count,
but doesn't decrease the volumes count when do cleanup. It can
cause libvirtd to crash when one trying to free the volume objects
like:
    for (i = 0; i < pool->volumes.count; i++)
        virStorageVolDefFree(pool->volumes.objs[i]);

It's more reliable if we add the newly created vol object in the
end.
2011-12-13 11:14:26 +08:00
Rommer
95ab415417 storage: Activate/deactivate logical volumes only on local node
Current "-ay | -an" has problems on pool starting/refreshing if
the volumes are clustered. Rommer has posted a patch to list 2
months ago.

https://www.redhat.com/archives/libvir-list/2011-October/msg01116.html

But IMO we shouldn't skip the inactived vols. So this is a squashed
patch by Rommer.

Signed-off-by: Rommer <rommer@active.by>
2011-12-12 21:55:47 +08:00
Eric Blake
3a9ce767f1 maint: fix improper use of 'an'
https://bugzilla.redhat.com/show_bug.cgi?id=648855 mentioned a
misuse of 'an' where 'a' is proper; that has since been fixed,
but a search found other problems (some were a spelling error for
'and', while most were fixed by 'a').

* daemon/stream.c: Fix grammar.
* src/conf/domain_conf.c: Likewise.
* src/conf/domain_event.c: Likewise.
* src/esx/esx_driver.c: Likewise.
* src/esx/esx_vi.c: Likewise.
* src/rpc/virnetclient.c: Likewise.
* src/rpc/virnetserverprogram.c: Likewise.
* src/storage/storage_backend_fs.c: Likewise.
* src/util/conf.c: Likewise.
* src/util/dnsmasq.c: Likewise.
* src/util/iptables.c: Likewise.
* src/xen/xen_hypervisor.c: Likewise.
* src/xen/xend_internal.c: Likewise.
* src/xen/xs_internal.c: Likewise.
* tools/virsh.c: Likewise.
2011-12-03 17:11:56 -07:00
Eric Blake
a699793449 maint: typo fixes
Many of these were mentioned by Yuri Chornoivan in:
https://bugzilla.redhat.com/show_bug.cgi?id=669506

* src/esx/esx_vi.c (esxVI_WaitForTaskCompletion): Fix spelling.
* src/conf/netdev_vport_profile_conf.c
(virNetDevVPortProfileParse): Likewise.
* src/xen/xend_internal.c (xenDaemonDomainSetVcpusFlags):
Likewise.
* src/xen/xm_internal.c (xenXMDomainSetVcpusFlags): Likewise.
* src/esx/esx_util.c (esxUtil_ResolveHostname): Likewise.
* src/storage/storage_backend_fs.c
(virStorageBackendFileSystemBuild): Likewise.
* daemon/libvirtd.conf: Likewise.
* src/util/logging.c (virLogMessage): Likewise.
* src/uml/uml_conf.c (umlBuildCommandLineNet): Likewise.
* src/vmx/vmx.c (virVMXFormatEthernet): Likewise.
2011-12-01 16:08:34 -07:00
Michal Privoznik
3ba949e8f4 storage: Refetch file status after open
This partly reverts my previous patch f88de3eb. We need to
get file status after open, as given path could have been symlink,
so fstat() will operate on different file than lstat().
2011-11-25 13:45:36 +01:00
Michal Privoznik
f88de3eb51 storage: Skip socket and fifo on pool-start
If pool directory contains special files like FIFO or sockets
we want to skip those on pool-start or pool-refresh otherwise
open() will get an error.
2011-11-25 08:07:43 +01:00
Chang Liu
3c5405149b storage: Fallback to use lvchange first if lvremove fails
virStorageBackendLogicalDeleteVol() could not remove the lv with error
"could not remove open logical volume" sometimes. Generally it's caused
by the volume is still active, even if lvremove tries to remove it with
option "--force".

This patch is to fix it by disbale the lv first using "lvchange -aln"
and "lvremove -f" afterwards if the direct "lvremove -f" failed.
2011-11-22 15:24:25 +08:00
Osier Yang
d26b73ca2b storage: Skips backingStore of virtual snapshot lv
lvs outputs "[$lvname_vorigin]" for the virtual snapshot lv
(created with "--virtualsize"), and the original device pointed
by "$lvname_vorigin" is just for lvm internal use, one should
never use it.

Per lvm's nameing rules, "[" is not valid as part of the vg/lv name.
(man 8 lvm).

<quote>
VALID NAMES
The following characters are valid for VG and LV names: a-z A-Z 0-9 + _
. -

VG and LV names cannot begin with a hyphen.   There  are  also  various
reserved  names that are used internally by lvm that can not be used as
LV or VG names.  A VG cannot be called anything that exists in /dev/ at
the time of creation, nor can it be called '.' or '..'.  A LV cannot be
called '.' '..' 'snapshot' or 'pvmove'. The LV name may also  not  con‐
tain the strings '_mlog' or '_mimage'
</quote>

So we can skip the set the lv's backingStore by checking if the name
begins with a "[".
2011-11-21 11:26:54 +08:00
Guido Günther
afa1029ada storage: forbid rebuilding existing disk storage pools
which would blow away all volumes. Honor VIR_STORAGE_POOL_BUILD_OVERWRITE
to force a rebuild.

This was caught by libvirt-tck's storage/110-disk-pool.t.
2011-11-14 18:19:40 +01:00
Eric Blake
e55ec69de6 build: drop useless dirent.h includes
* .gnulib: Update to latest, for improved syntax-check.
* src/lxc/lxc_container.c (includes): Drop unused include.
* src/network/bridge_driver.c: Likewise.
* src/node_device/node_device_linux_sysfs.c: Likewise.
* src/openvz/openvz_driver.c: Likewise.
* src/qemu/qemu_conf.c: Likewise.
* src/storage/storage_backend_iscsi.c: Likewise.
* src/storage/storage_backend_mpath.c: Likewise.
* src/uml/uml_conf.c: Likewise.
* src/uml/uml_driver.c: Likewise.
2011-11-11 14:12:37 -07:00
Eric Blake
c04beb5d3a storage: avoid null deref on qemu-img failure
Detected by Coverity.  Only possible if qemu-img gives bogus output,
but we might as well be robust.

* src/storage/storage_backend.c
(virStorageBackendQEMUImgBackingFormat): Check for strstr failure.
2011-10-26 10:58:00 -06:00
Eric Blake
b1836a254e storage: make previous leak less likely to regress
Splitting into two functions allows the user to call the right
function, rather than having to remember that a *Free function is
an exception to the rule.

* src/conf/storage_conf.h (virStoragePoolSourceClear): New function.
* src/libvirt_private.syms (storage_conf.h): Export it.
* src/conf/storage_conf.c (virStoragePoolSourceFree): Split...
(virStoragePoolSourceClear): ...into new function.
(virStoragePoolDefFree, virStoragePoolDefParseSourceString):
Update callers.
* src/test/test_driver.c (testStorageFindPoolSources): Likewise.
* src/storage/storage_backend_fs.c
(virStorageBackendFileSystemNetFindPoolSourcesFunc)
(virStorageBackendFileSystemNetFindPoolSources): Likewise.
* src/storage/storage_backend_iscsi.c
(virStorageBackendISCSIFindPoolSources): Likewise.
* src/storage/storage_backend_logical.c
(virStorageBackendLogicalFindPoolSources): Likewise.
2011-10-24 19:42:49 -06:00
Eric Blake
79052a76b5 storage: plug iscsi memory leak
Detected by Coverity.  virStoragePoolSourceFree does not free the
actual passed-in pointer.  A bigger patch would be to rename it
virStoragePoolSourceClear to match behavior, or even split it into
two functions depending on needed behavior; but this is the minimal
fix to the one location out of eight that leaked memory.

* src/storage/storage_backend_iscsi.c
(virStorageBackendISCSIFindPoolSources): Free memory.
2011-10-24 19:32:25 -06:00
Eric Blake
8f8258e1df storage: plug memory leak on error
Detected by Coverity.  Present since commit 82c1740.

* src/storage/storage_backend_logical.c
(virStorageBackendLogicalMakeVol): Fix leak.
2011-10-13 15:27:44 -06:00
Eric Blake
dbbe16c26e maint: typo fixes
I noticed a couple typos in recent commits, and fixed the remaining
instances of them.

* docs/internals/command.html.in: Fix spelling errors.
* include/libvirt/libvirt.h.in (virConnectDomainEventCallback):
Likewise.
* python/libvirt-override.py (virEventAddHandle): Likewise.
* src/lxc/lxc_container.c (lxcContainerChild): Likewise.
* src/util/hash.c (virHashCreateFull): Likewise.
* src/storage/storage_backend_logical.c
(virStorageBackendLogicalMakeVol): Likewise.
* src/esx/esx_driver.c (esxFormatVMXFileName): Likewise.
* src/vbox/vbox_tmpl.c (vboxIIDIsEqual_v3_x): Likewise.
2011-10-10 14:02:06 -06:00
Osier Yang
82c1740ab9 storage: Do not use comma as seperator for lvs output
* src/storage/storage_backend_logical.c:

If a logical vol is created as striped. (e.g. --stripes 3),
the "device" field of lvs output will have multiple fileds which are
seperated by comma. Thus the RE we write in the codes will not
work well anymore. E.g. (lvs output for a stripped vol, uses "#" as
seperator here):

test_stripes##fSLSZH-zAS2-yAIb-n4mV-Al9u-HA3V-oo9K1B#\
/dev/sdc1(10240),/dev/sdd1(0)#42949672960#4194304

The RE we use:

    const char *regexes[] = {
        "^\\s*(\\S+),(\\S*),(\\S+),(\\S+)\\((\\S+)\\),(\\S+),([0-9]+),?\\s*$"
    };

Also the RE doesn't match the "devices" field of striped vol properly,
it contains multiple "device path" and "offset".

This patch mainly does:
    1) Change the seperator into "#"
    2) Change the RE for "devices" field from "(\\S+)\\((\\S+)\\)"
       into "(\\S+)".
    3) Add two new options for lvs command, (segtype, stripes)
    4) Extend the RE to match the value for the two new fields.
    5) Parse the "devices" field seperately in virStorageBackendLogicalMakeVol,
       multiple "extents" info are generated if the vol is striped. The
       number of "extents" is equal to the stripes number of the striped vol.

A incidental fix: (virStorageBackendLogicalMakeVol)
    Free "vol" if it's new created and there is error.

Demo on striped vol with the patch applied:

% virsh vol-dumpxml /dev/test_vg/vol_striped2
<volume>
  <name>vol_striped2</name>
  <key>QuWqmn-kIkZ-IATt-67rc-OWEP-1PHX-Cl2ICs</key>
  <source>
    <device path='/dev/sda5'>
      <extent start='79691776' end='88080384'/>
    </device>
    <device path='/dev/sda6'>
      <extent start='62914560' end='71303168'/>
    </device>
  </source>
  <capacity>8388608</capacity>
  <allocation>8388608</allocation>
  <target>
    <path>/dev/test_vg/vol_striped2</path>
    <permissions>
      <mode>0660</mode>
      <owner>0</owner>
      <group>6</group>
      <label>system_u:object_r:fixed_disk_device_t:s0</label>
    </permissions>
  </target>
</volume>

RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=727474
2011-10-10 20:34:59 +08:00
Serge E. Hallyn
30f555c6a8 lvm storage backend: handle command_names=1 in lvm.conf
If the regexes supported (?:pvs)?, then we could handle this by
optionally matching but not returning the initial command name.  But it
doesn't.  So add a new char* argument to
virStorageBackendRunProgRegex().  If that argument is NULL then we act
as usual.  Otherwise, if the string at that argument is found at the
start of a returned line, we drop that before running the regex.

With this patch, virt-manager shows me lvs with command_names 1 or 0.

The definitions of PVS_BASE etc may want to be moved into the configure
scripts (though given how PVS is found, IIUC that could only happen if
pvs was a link to pvs_real), but in any case no sense dealing with that
until we're sure this is an ok way to handle it.

Signed-off-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2011-09-30 15:17:44 -06:00
Osier Yang
05e2fc51d1 storage: Do not break the whole vol lookup process in the middle
* src/storage/storage_driver.c: As virStorageVolLookupByPath lookups
all the pool objs of the drivers, breaking when failing on getting
the stable path of the pool will just breaks the whole lookup process,
it can cause the API fails even if the vol exists indeed. It won't get
any benefit. This patch is to fix it.
2011-09-27 08:38:12 +08:00
Osier Yang
bc4e5b43c2 storage: Wait udev events are handled before removing lvm vol
Related #BZ: https://bugzilla.redhat.com/show_bug.cgi?id=702260.

There are two problems described in the BZ:
1) "Can't remove open logical volume".
2) "Unable to deactivate logical volume "foo""

This patch just intends to fix 2), as 1) is expected if the vol
is still used by something, and you never known if "lvchange -an"
will fail or not either (sometime, it will succeed, sometimes not).
We'd better not look for trouble, :-)

For 2), that's caused by race between lvremove and udev event handling,
the only workable way now is to wait the events handling are finished,
though it might introduce latencies, as "udevadmin settle" exits
after *all* events are handled, it's the only way we can fix
the racing in libvirt layer.

See https://bugzilla.redhat.com/show_bug.cgi?id=570359 for more
details.
2011-09-22 07:53:57 +08:00
Osier Yang
891c6fd74f storage: Ensure the device path exists before refreshing disk pool
Doing libvirt_parthelper on an not existed device path will get
an unfriendly error message. This patch is to prohibit it.
2011-09-20 11:15:05 +08:00
Peter Krempa
bc35f12a45 build: storage: Macro 'MKFS' is undefined on some platforms.
Mac OS X 10.6. Snow Leopard and probably other do not provide a mkfs
command to create filesystems. Macro MKFS then remained undefined and
did not provide any substitute, so that build failed on a missing
argument.
2011-09-16 21:07:02 +08:00
Peter Krempa
1ce3b61fa5 build: storage: Conditionaly compiled structure caused build fail on OSX
Struct virStoragePoolProbeResult was compiled in conditionaly, but
virStorageBackendFileSystemProbe used it unconditionaly. This patch
exempts the struct from conditional include.
2011-09-16 21:03:50 +08:00
Peter Krempa
79cf07af7c Avoid using "devname" as an identifier.
/usr/lib/stdlib.h in Mac OS X and probably also in BSD's
exports this symbol :(
2011-09-16 20:49:04 +08:00
Lei Li
5a1f272875 Check for source conflicts in storage pools
Fix bug #611823 storage driver should prohibit pools with duplicate
underlying storage.

Add internal API virStoragePoolSourceFindDuplicate() to do uniqueness
check based on source location infomation for pool type.

* AUTHORS: add Lei Li
2011-09-05 15:52:03 +08:00
Osier Yang
27758859c7 storage: Add fs pool formatting
This patch adds the ability to make the filesystem for a filesystem
pool during a pool build.

The patch adds two new flags, no overwrite and overwrite, to control
when mkfs gets executed.  By default, the patch preserves the
current behavior, i.e., if no flags are specified, pool build on a
filesystem pool only makes the directory on which the filesystem
will be mounted.

If the no overwrite flag is specified, the target device is checked
to determine if a filesystem of the type specified in the pool is
present.  If a filesystem of that type is already present, mkfs is
not executed and the build call returns an error.  Otherwise, mkfs
is executed and any data present on the device is overwritten.

If the overwrite flag is specified, mkfs is always executed, and any
existing data on the target device is overwritten unconditionally.
2011-09-02 21:16:58 +08:00
Daniel P. Berrange
b6263c1801 Fix parted sector size assumption
Parted does not report disk size in 512 byte units, but
rather the disks' logical sector size, which with modern
drives might be 4k.

* src/storage/parthelper.c: Remove hardcoded 512 byte sector
  size
2011-09-01 10:46:31 +01:00
Osier Yang
ffafede112 storage: Fix incorrect error codes
Commit 0376f4a69b intended to fix incorrect use of VIR_ERR_NO_SUPPORT,
but replacing it with VIR_ERR_OPERATION_INVALID is not proper either.
2011-09-01 17:36:38 +08:00
Osier Yang
0376f4a69b storage: Cleanup improper VIR_ERR_NO_SUPPORT use 2011-08-23 16:31:03 +08:00
Michal Privoznik
b32f8b1989 storage: Flush host cache after write
Although we are flushing cache after some critical writes (e.g.
volume creation), after some others we do not (e.g. volume cloning).
This patch fix this issue. That is for volume cloning, writing
header of logical volume, and storage wipe.
2011-08-19 11:10:31 +02:00
Peter Krempa
6c55124f37 storage: Directory shouldn't be listed as type 'file'
Fix internals of libvirt for new storage volume type.
Libvirt reported an invalid type of the volume.

BZ #727088
2011-08-11 13:34:26 -06:00
Eric Blake
00ef048f62 fdstream: drop delete argument
Revert 6a1f5f568f.  Now that libvirt_iohelper takes fds by
inheritance rather than by open() (commit 1eb66479), there is
no longer a race where the parent can unlink() a file prior to
the iohelper open()ing the same file.  From there, it makes
more sense to have the callers both create and unlink, rather
than the caller create and the stream unlink, since the latter
was only needed when iohelper had to do the unlink.

* src/fdstream.h (virFDStreamOpenFile, virFDStreamCreateFile):
Callers are responsible for deletion.
* src/fdstream.c (virFDStreamOpenFileInternal): Don't leak created
file on failure.
(virFDStreamOpenFile, virFDStreamCreateFile): Drop parameter.
* src/lxc/lxc_driver.c (lxcDomainOpenConsole): Update callers.
* src/qemu/qemu_driver.c (qemuDomainScreenshot)
(qemuDomainOpenConsole): Likewise.
* src/storage/storage_driver.c (storageVolumeDownload)
(storageVolumeUpload): Likewise.
* src/uml/uml_driver.c (umlDomainOpenConsole): Likewise.
* src/vbox/vbox_tmpl.c (vboxDomainScreenshot): Likewise.
* src/xen/xen_driver.c (xenUnifiedDomainOpenConsole): Likewise.
2011-08-02 14:53:43 -06:00
Eric Blake
8e22e08935 build: rename files.h to virfile.h
In preparation for a future patch adding new virFile APIs.

* src/util/files.h, src/util/files.c: Move...
* src/util/virfile.h, src/util/virfile.c: ...here, and rename
functions to virFile prefix.  Macro names are intentionally
left alone.
* *.c: All '#include "files.h"' uses changed.
* src/Makefile.am (UTIL_SOURCES): Reflect rename.
* cfg.mk (exclude_file_name_regexp--sc_prohibit_close): Likewise.
* src/libvirt_private.syms: Likewise.
* docs/hacking.html.in: Likewise.
* HACKING: Regenerate.
2011-07-21 10:34:51 -06:00
Eric Blake
a71434054c maint: fix typos on guaranteed
* src/conf/domain_event.c (virDomainEventDispatch): Fix typo.
* src/internal.h (ATTRIBUTE_FMT_PRINTF): Likewise.
* src/libvirt.c (virStreamEventUpdateCallback): Likewise.
* src/remote/remote_driver.c (doRemoteOpen): Likewise.
* src/storage/storage_backend_fs.c (virStorageBackendProbeTarget):
Likewise.
* src/util/virterror.c (virConnCopyLastError, virCopyLastError):
Likewise.
* src/xen/xend_internal.h (xend_wait_for_devices): Likewise.
2011-07-20 16:53:31 -06:00
Dave Allan
618b55220a Fix error code for storage operations
Many volume operations will fail if the volume in question is being
allocated.  These operations were returning VIR_ERR_INTERNAL_ERROR
when they should be returning VIR_ERR_OPERATION_INVALID.
2011-07-15 08:35:25 -06:00
Michal Privoznik
85aa40e26d storage: Avoid memory leak on metadata fetching
Getting metadata on storage allocates a memory (path) which need to
be freed after use otherwise it gets leaked. This means after use of
virStorageFileGetMetadataFromFD or virStorageFileGetMetadata one
must call virStorageFileFreeMetadata to free it. This function frees
structure internals and structure itself.
2011-07-14 16:39:42 +02:00
Eric Blake
64bd1b9dd5 storage: reject unknown flags
* src/storage/storage_backend.c (virStorageBackendCreateBlockFrom)
(virStorageBackendCreateQemuImg)
(virStorageBackendCreateQcowCreate): Reject unknown flags.
* src/storage/storage_backend_disk.c (virStorageBackendDiskBuildPool)
(virStorageBackendDiskDeleteVol): Likewise.
* src/storage/storage_backend_fs.c
(virStorageBackendFileSystemNetFindPoolSources)
(virStorageBackendFileSystemBuild)
(virStorageBackendFileSystemDelete, createFileDir)
(virStorageBackendFileSystemVolBuildFrom)
(virStorageBackendFileSystemVolDelete): Likewise.
* src/storage/storage_backend_iscsi.c
(virStorageBackendISCSIFindPoolSources): Likewise.
* src/storage/storage_backend_logical.c
(virStorageBackendLogicalFindPoolSources)
(virStorageBackendLogicalBuildPool)
(virStorageBackendLogicalDeletePool)
(virStorageBackendLogicalDeleteVol): Likewise.
* src/storage/storage_driver.c (storageOpen, storagePoolCreate)
(storagePoolDefine, storagePoolRefresh, storagePoolGetXMLDesc)
(storageVolumeCreateXML, storageVolumeCreateXMLFrom)
(storageVolumeGetXMLDesc): Likewise.
2011-07-13 09:04:54 -06:00
Eric Blake
17da0669e0 util: drop unused safezero argument
No caller was using the flags argument, and this function is internal
only, so we might as well skip it.

* src/util/util.h (safezero): Update signature.
* src/util/util.c (safezero): Update function.
* src/locking/lock_driver_sanlock.c
(virLockManagerSanlockSetupLockspace)
(virLockManagerSanlockCreateLease): Update all callers.
* src/storage/storage_backend.c (createRawFile): Likewise.
2011-07-07 14:15:38 -06:00
Eric Blake
1740c38116 drivers: prefer unsigned int for flags
Now that the public APIs always use unsigned flags, the internal
driver callbacks might as well do likewise.

* src/driver.h (vrDrvOpen, virDrvDomainCoreDump)
(virDrvDomainGetXMLDesc, virDrvNetworkGetXMLDesc)
(virDrvNWFilterGetXMLDesc): Update type.
* src/remote/remote_protocol.x (remote_open_args)
(remote_domain_core_dump_args, remote_domain_get_xml_desc_args)
(remote_network_get_xml_desc_args)
(remote_nwfilter_get_xml_desc_args): Likewise.
* src/test/test_driver.c: Update clients.
* src/remote/remote_driver.c: Likewise.
* src/xen/xen_hypervisor.c: Likewise.
* src/xen/xen_hypervisor.h: Likewise.
* src/xen/xen_driver.c: Likewise.
* src/xen/xend_internal.c: Likewise.
* src/xen/xend_internal.h: Likewise.
* src/xen/xm_internal.c: Likewise.
* src/xen/xm_internal.h: Likewise.
* src/xen/xs_internal.c: Likewise.
* src/xen/xs_internal.h: Likewise.
* src/xen/xen_inotify.c: Likewise.
* src/xen/xen_inotify.h: Likewise.
* src/phyp/phyp_driver.c: Likewise.
* src/openvz/openvz_driver.c: Likewise.
* src/vmware/vmware_driver.c: Likewise.
* src/vbox/vbox_driver.c: Likewise.
* src/vbox/vbox_tmpl.c: Likewise.
* src/xenapi/xenapi_driver.c: Likewise.
* src/esx/esx_driver.c: Likewise.
* src/esx/esx_interface_driver.c: Likewise.
* src/esx/esx_network_driver.c: Likewise.
* src/esx/esx_storage_driver.c: Likewise.
* src/esx/esx_device_monitor.c: Likewise.
* src/esx/esx_secret_driver.c: Likewise.
* src/esx/esx_nwfilter_driver.c: Likewise.
* src/interface/netcf_driver.c: Likewise.
* src/nwfilter/nwfilter_driver.c: Likewise.
* src/libxl/libxl_driver.c: Likewise.
* src/qemu/qemu_driver.c: Likewise.
* src/lxc/lxc_driver.c: Likewise.
* src/uml/uml_driver.c: Likewise.
* src/network/bridge_driver.c: Likewise.
* src/secret/secret_driver.c: Likewise.
* src/storage/storage_driver.c: Likewise.
* src/node_device/node_device_hal.c: Likewise.
* src/node_device/node_device_udev.c: Likewise.
* src/remote_protocol-structs: Likewise.
2011-07-07 14:15:37 -06:00
Matthias Bolte
e123e1ee6b Fix return value semantic of virFileMakePath
Some callers expected virFileMakePath to set errno, some expected
it to return an errno value. Unify this to return 0 on success and
-1 on error. Set errno to report detailed error information.

Also optimize virFileMakePath if stat fails with an errno different
from ENOENT.
2011-07-06 09:27:06 +02:00
Osier Yang
49826eda7a storage: Do not override the exact error of createRawFile
virStorageBackendCreateRaw: createRawFile already reported the
exact error.

Before the fix:

error: Failed to create vol vol-create.img
error: cannot create path '/var/lib/libvirt/images/vol-create.img': Unknown error 18446744073709551597

After the fix:

error: Failed to create vol vol-create.img
error: cannot fill file '/var/lib/libvirt/images/vol-create.img': No space left on device
2011-07-04 16:13:23 +08:00
Eric Blake
5dc404b71d storage: avoid crash on parse error
Coverity detected that we could crash on bogus input.  Meanwhile,
strtok_r is rather heavy compared to strchr.

* src/storage/storage_backend_iscsi.c (virStorageBackendIQNFound):
  Check for parse failure, and use lighter-weight functions.
2011-07-04 10:41:38 +08:00
Matthew Booth
10208cc503 storage: fix volDelete return when volume still being allocated
volDelete used to return VIR_ERR_INTERNAL_ERROR when attempting to
delete a volume which was still being allocated. It should return
VIR_ERR_OPERATION_INVALID.

* src/storage/storage_driver.c: Fix return of volDelete.
2011-06-23 11:28:29 +08:00
Daniel P. Berrange
a81822063d Fix errno return in safezero()
Most of the safezero() implementations return -1 on error,
setting errno. The safezero() impl using posix_fallocate()
though returned a positive errno value on error (due to
the unusual API contract of posix_fallocate() compared to
most syscall APIs).

* src/util/util.c: Ensure safezero() returns -1 and sets
  errno on error.
* src/storage/storage_backend.c: Change safezero != 0 to
  < 0 for detecting errors
2011-06-17 11:02:18 +01:00
Eric Blake
66dc2ae61b storage: avoid an intermediate malloc
Suggested here:
https://www.redhat.com/archives/libvir-list/2011-May/msg00594.html

* src/storage/storage_backend.c (virStorageBackendCreateQemuImg):
Generate size inline.
2011-06-14 09:17:57 -06:00
Cole Robinson
02e86910e2 Move virRun, virExec*, virFork to util/command
Seems reasonable to have all command wrappers in the same place

v2:
    Dont move SetInherit

v3:
    Comment spelling fix
    Adjust WARN0 comment
    Remove spurious #include movement
    Don't include sys/types.h
    Combine virExec enums

Signed-off-by: Cole Robinson <crobinso@redhat.com>
2011-06-07 14:06:11 -04:00
Eric Blake
9892f7bca0 storage: avoid memory leak
Coverity detected that options was being set by strdup but never
freed.  But why even bother with an options variable?  The options
parameter never changes!  Leak present since commit 44948f5b (0.7.0).

This function could probably be rewritten to take better advantage
of virCommand, but that is more invasive.

* src/storage/storage_backend_fs.c
(virStorageBackendFileSystemMount): Avoid wasted strdup, and
guarantee proper cleanup on all paths.
2011-06-03 08:11:42 -06:00
Cole Robinson
8077d64f96 storage: List directory volumes for dir/fs/netfs pools
Since directories can be used for <filesystem> passthrough, they are
basically storage volumes.

v2:
    Skip ., .., lost+found dirs

v3:
    Use gnulib last_component

v4:
    Use gnulib "dirname.h", not system <dirname.h>
    Don't skip lost+found
2011-05-31 12:47:58 -04:00
Jiri Denemark
5e09aea7b0 Replace all remaining setgid/setuid calls with virSetUIDGID
Two additional places need initgroups call to properly work in an
environment where the UID is allowed to open/create stuff through its
supplementary groups.
2011-05-24 12:09:53 +03:00
Michal Privoznik
5f88d198bd storage: Add comment to picking return value of qemu-img
Commit d7b2679253 introduced
a return value picking of qemu-img on '-h', but without any comment.
2011-05-24 08:54:37 +02:00
Michal Privoznik
d7b2679253 storage: pick return value of qemu-img
qemu-img returns non-zero status on -h. Therefore we need to
provide virCommandRun() a non-NULL exit status pointer.
2011-05-23 13:47:06 +02:00
Cole Robinson
1ccc16c603 storage_backend: Convert virRunWithHook usage to virCommand
virRunWithHook is now unused, so we can drop it. Tested w/ raw + qcow2
volume creation and copying.

v2:
    Use opaque data to skip hook second time around
    Simply command building

v3:
    Drop explicit FindFileInPath
2011-05-17 10:16:38 -04:00
Cole Robinson
51622f21a2 storage_backend: Fix error reporting with regex helper
Some clients overwrite the error from the regex helper, or do half-baked
error reporting with the exitstatus.
2011-05-17 10:16:38 -04:00
Cole Robinson
be1965be66 storage: Covert regex helpers to virCommand
v2:
    Simplify command creation
    Add a missing virCommandFree
    Use virCommand auto-cleanup for async process
2011-05-17 10:16:38 -04:00
Cole Robinson
1fcafb02e2 storage: iscsi: Convert virExec to virCommand
v2:
    Use virCommand auto-cleanup
2011-05-17 10:11:09 -04:00
Daniel P. Berrange
9b1ae97fdc Add many version number annotations to drivers
Add many version number annotations to the internal driver
tables, to allow hvsupport.html to display more accurate
information
2011-05-16 14:20:48 +01:00
Cole Robinson
b3ecd78064 storage: Convert qemu-img -help parsing to virCommand 2011-05-13 14:19:08 -04:00
Michal Privoznik
6a1f5f568f virFDStream: Add option for delete file after it's opening
This is needed if we want to transfer a temporary file. If the
transfer is done with iohelper, we might run into a race condition,
where we unlink() file before iohelper is executed.

* src/fdstream.c, src/fdstream.h,
  src/util/iohelper.c: Add new option
* src/lxc/lxc_driver.c, src/qemu/qemu_driver.c,
  src/storage/storage_driver.c, src/uml/uml_driver.c,
  src/xen/xen_driver.c: Expand existing function calls
2011-05-13 12:44:49 +02:00
Eric Blake
cb84580a25 maint: omit translation for all VIR_INFO
We were 31/73 on whether to translate; since less than 50% translated
and since VIR_INFO is less than VIR_WARN which also doesn't translate,
this makes sense.

* cfg.mk (sc_prohibit_gettext_markup): Add VIR_INFO, since it
falls between WARN and DEBUG.
* daemon/libvirtd.c (qemudDispatchSignalEvent, remoteCheckAccess)
(qemudDispatchServer): Adjust offenders.
* daemon/remote.c (remoteDispatchAuthPolkit): Likewise.
* src/network/bridge_driver.c (networkReloadIptablesRules)
(networkStartNetworkDaemon, networkShutdownNetworkDaemon)
(networkCreate, networkDefine, networkUndefine): Likewise.
* src/qemu/qemu_driver.c (qemudDomainDefine)
(qemudDomainUndefine): Likewise.
* src/storage/storage_driver.c (storagePoolCreate)
(storagePoolDefine, storagePoolUndefine, storagePoolStart)
(storagePoolDestroy, storagePoolDelete, storageVolumeCreateXML)
(storageVolumeCreateXMLFrom, storageVolumeDelete): Likewise.
* src/util/bridge.c (brProbeVnetHdr): Likewise.
* po/POTFILES.in: Drop src/util/bridge.c.
2011-05-11 15:20:33 -06:00
Lai Jiangshan
b65f37a4a1 libvirt,logging: cleanup VIR_XXX0()
These VIR_XXXX0 APIs make us confused, use the non-0-suffix APIs instead.

How do these coversions works? The magic is using the gcc extension of ##.
When __VA_ARGS__ is empty, "##" will swallow the "," in "fmt," to
avoid compile error.

example: origin				after CPP
	high_level_api("%d", a_int)	low_level_api("%d", a_int)
	high_level_api("a  string")	low_level_api("a  string")

About 400 conversions.

8 special conversions:
VIR_XXXX0("") -> VIR_XXXX("msg") (avoid empty format) 2 conversions
VIR_XXXX0(string_literal_with_%) -> VIR_XXXX(%->%%) 0 conversions
VIR_XXXX0(non_string_literal) -> VIR_XXXX("%s", non_string_literal)
  (for security) 6 conversions

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
2011-05-11 12:41:14 -06:00
Matthias Bolte
9817604afc Rename internal DumpXML functions to GetXMLDesc
This matches the public API and helps to get rid of some special
case code in the remote generator.

Rename driver API functions and XDR protocol structs.

No functional change included outside of the remote generator.
2011-05-10 20:32:41 +02:00
Eric Blake
4644f0b253 storage: avoid null deref and leak on failure
Detected by clang.  NULL deref added in commit 343a27a (Mar 11),
but leak of voldef present since commit 2cd9b2d (Apr 09).

* src/storage/storage_driver.c (storageVolumeCreateXML): Don't
leak voldef or dereference null volobj.
2011-05-04 15:01:13 -06:00
Eric Blake
f72393fa97 storage: use virCommand to avoid compiler warning
clang didn't like the last increment to nargs.  But why even
track nargs ourselves, when virCommand does it for us?

* src/storage/storage_backend_iscsi.c
(virStorageBackendISCSIConnection): Switch to virCommand to avoid
a dead-store warning on nargs.
2011-05-04 08:54:20 -06:00
Richard Laager
cf7124946a Fix two out-of-date comments in LVM backend 2011-04-17 08:37:31 +02:00
Eric Blake
99fa30804b maint: fix grammar errors
Jim Meyering recently improved gnulib to catch various grammar
errors during 'make syntax-check'.

* .gnulib: Update to latest, for syntax-check improvements.
* include/libvirt/libvirt.h.in (virConnectAuthCallbackPtr): Use
cannot rather than two words.
* src/driver.c: Likewise.
* src/driver.h (VIR_SECRET_GET_VALUE_INTERNAL_CALL): Likewise.
* src/remote/remote_driver.c (initialize_gnutls): Likewise.
* src/util/pci.c (pciBindDeviceToStub): Likewise.
* src/storage/storage_backend.c (virStorageBackendCreateQemuImg):
Likewise.
(virStorageBackendUpdateVolTargetInfoFD): Avoid doubled word.
* docs/formatdomain.html.in: Likewise.
* src/qemu/qemu_process.c (qemuProcessStart): Likewise.
* cfg.mk (exclude_file_name_regexp--sc_prohibit_can_not)
(exclude_file_name_regexp--sc_prohibit_doubled_word): Exclude
existing translation problems.
2011-04-12 09:06:14 -06:00
Daniel P. Berrange
fdcd06ef71 Improve SCSI volume key generation
The SCSI volumes get a better 'key' field based on the fully
qualified volume path. All SCSI volumes have a unique serial
available in hardware which can be obtained by sending a
suitable SCSI command. Call out to udev's 'scsi_id' command
to fetch this value

* src/storage/storage_backend_scsi.c: Improve volume key
  field value stability and uniqueness
2011-04-05 16:04:22 +01:00
Matthias Bolte
cd708ef4ea storage: Remove PATH_MAX sized stack allocation from iSCSI backend 2011-04-05 09:12:46 +02:00
Jesse Cook
33da939b0f Allow relative path for qemu backing file
This patch enables the relative backing file path support provided by
qemu-img create.

If a relative path is specified for the backing file, it is converted
to an absolute path using the storage pool path. The absolute path is
used to verify that the backing file exists. If the backing file exists,
the relative path is allowed and will be provided to qemu-img create.
2011-04-04 16:37:58 -06:00
Eric Blake
0d166c6b7c build: detect potentential uninitialized variables
Even with -Wuninitialized (which is part of autobuild.sh
--enable-compile-warnings=error), gcc does NOT catch this
use of an uninitialized variable:

{
  if (cond)
    goto error;
  int a = 1;
error:
  printf("%d", a);
}

which prints 0 (supposing the stack started life wiped) if
cond was true.  Clang will catch it, but we don't use clang
as often.  Using gcc -Wjump-misses-init catches it, but also
gives false positives:

{
  if (cond)
    goto error;
  int a = 1;
  return a;
error:
  return 0;
}

Here, a was never used in the scope of the error block, so
declaring it after goto is technically fine (and clang agrees).
However, given that our HACKING already documents a preference
to C89 decl-before-statement, the false positive warning is
enough of a prod to comply with HACKING.

[Personally, I'd _really_ rather use C99 decl-after-statement
to minimize scope, but until gcc can efficiently and reliably
catch scoping and uninitialized usage bugs, I'll settle with
the compromise of enforcing a coding standard that happens to
reject false positives if it can also detect real bugs.]

* acinclude.m4 (LIBVIRT_COMPILE_WARNINGS): Add -Wjump-misses-init.
* src/util/util.c (__virExec): Adjust offenders.
* src/conf/domain_conf.c (virDomainTimerDefParseXML): Likewise.
* src/remote/remote_driver.c (doRemoteOpen): Likewise.
* src/phyp/phyp_driver.c (phypGetLparNAME, phypGetLparProfile)
(phypGetVIOSFreeSCSIAdapter, phypVolumeGetKey)
(phypGetStoragePoolDevice)
(phypVolumeGetPhysicalVolumeByStoragePool)
(phypVolumeGetPath): Likewise.
* src/vbox/vbox_tmpl.c (vboxNetworkUndefineDestroy)
(vboxNetworkCreate, vboxNetworkDumpXML)
(vboxNetworkDefineCreateXML): Likewise.
* src/xenapi/xenapi_driver.c (getCapsObject)
(xenapiDomainDumpXML): Likewise.
* src/xenapi/xenapi_utils.c (createVMRecordFromXml): Likewise.
* src/security/security_selinux.c (SELinuxGenNewContext):
Likewise.
* src/qemu/qemu_command.c (qemuBuildCommandLine): Likewise.
* src/qemu/qemu_hotplug.c (qemuDomainChangeEjectableMedia):
Likewise.
* src/qemu/qemu_process.c (qemuProcessWaitForMonitor): Likewise.
* src/qemu/qemu_monitor_text.c (qemuMonitorTextGetPtyPaths):
Likewise.
* src/qemu/qemu_driver.c (qemudDomainShutdown)
(qemudDomainBlockStats, qemudDomainMemoryPeek): Likewise.
* src/storage/storage_backend_iscsi.c
(virStorageBackendCreateIfaceIQN): Likewise.
* src/node_device/node_device_udev.c (udevProcessPCI): Likewise.
2011-04-04 11:26:29 -06:00
Naoya Horiguchi
343a27aff8 extend logging to record configuration-related changes
Currently libvirt's default logging is limited and it is difficult to
determine what was happening when a proglem occurred (especially on a
machines where one don't know the detail.)  This patch helps to do that
by making additional logging available for the following events:

  creating/defining/undefining domains
  creating/defining/undefining/starting/stopping networks
  creating/defining/undefining/starting/stopping storage pools
  creating/defining/undefining/starting/stopping storage volumes.

* AUTHORS: add Naoya Horiguchi
* src/network/bridge_driver.c src/qemu/qemu_driver.c
  src/storage/storage_driver.c: provide more VIR_INFO logging
2011-03-30 09:19:47 +08:00
Daniel P. Berrange
925639627c Support volume data upload/download APIs in storage driver
Use generic FD streams to allow data upload/download to/from
any storage volume

* src/storage/storage_driver.c: Wire up upload/download APIs
2011-03-29 12:17:45 +01:00
Daniel P. Berrange
7300f68dff Add public APIs for storage volume upload/download
New APIs are added allowing streaming of content to/from
storage volumes.

* include/libvirt/libvirt.h.in: Add virStorageVolUpload and
  virStorageVolDownload APIs
* src/driver.h, src/libvirt.c, src/libvirt_public.syms: Stub
  code for new APIs
* src/storage/storage_driver.c, src/esx/esx_storage_driver.c:
  Add dummy entries in driver table for new APIs
2011-03-29 12:17:33 +01:00
Eric Blake
1a369dfbe8 qemu, storage: improve type safety
* src/storage/storage_backend.c (createRawFileOpHook): Change
signature.
(struct createRawFileOpHookData): Delete unused struct.
(virStorageBackendCreateRaw): Adjust caller.
* src/qemu/qemu_driver.c (struct fileOpHookData): Delete unused
struct.
(qemudDomainSaveFileOpHook): Rename...
(qemuDomainSaveFileOpHook): ...and change signature.
(qemudDomainSaveFlag): Adjust caller.
2011-03-28 10:26:33 -06:00
Eric Blake
1fdd50f999 util: rename virFileOperation to virFileOpenAs
This patch intentionally doesn't change indentation, in order to
make it easier to review the real changes.

* src/util/util.h (VIR_FILE_OP_RETURN_FD, virFileOperationHook):
Delete.
(virFileOperation): Rename...
(virFileOpenAs): ...and reduce parameters.
* src/util/util.c (virFileOperationNoFork, virFileOperation):
Rename and simplify.
* src/qemu/qemu_driver.c (qemudDomainSaveFlag): Adjust caller.
* src/storage/storage_backend.c (virStorageBackendCreateRaw):
Likewise.
* src/libvirt_private.syms: Reflect rename.
2011-03-28 10:26:33 -06:00
Eric Blake
fe303a4256 storage: simplify fd handling
* src/storage/storage_backend.c (virStorageBackendCreateRaw): Use
new virFileOperation flag.
2011-03-28 10:26:33 -06:00
Eric Blake
208a044a54 command: properly diagnose process exit via signal
Child processes don't always reach _exit(); if they die from a
signal, then any messages should still be accurate.  Most users
either expect a 0 status (thankfully, if status==0, then
WIFEXITED(status) is true and WEXITSTATUS(status)==0 for all
known platforms) or were filtering on WIFEXITED before printing
a status, but a few were missing this check.  Additionally,
nwfilter_ebiptables_driver was making an assumption that works
on Linux (where WEXITSTATUS shifts and WTERMSIG just masks)
but fails on other platforms (where WEXITSTATUS just masks and
WTERMSIG shifts).

* src/util/command.h (virCommandTranslateStatus): New helper.
* src/libvirt_private.syms (command.h): Export it.
* src/util/command.c (virCommandTranslateStatus): New function.
(virCommandWait): Use it to also diagnose status from signals.
* src/security/security_apparmor.c (load_profile): Likewise.
* src/storage/storage_backend.c
(virStorageBackendQEMUImgBackingFormat): Likewise.
* src/util/util.c (virExecDaemonize, virRunWithHook)
(virFileOperation, virDirCreate): Likewise.
* daemon/remote.c (remoteDispatchAuthPolkit): Likewise.
* src/nwfilter/nwfilter_ebiptables_driver.c (ebiptablesExecCLI):
Likewise.
2011-03-25 05:34:48 -06:00
Minoru Usui
9bfde34661 Fix performance problem of virStorageVolCreateXMLFrom()
This patch changes zerobuf variable from array to VIR_ALLOC_N().

Signed-off-by: Minoru Usui <usui@mxm.nes.nec.co.jp>
2011-03-14 21:02:17 -06:00
Philipp Hahn
0ed445e79c Ignore backing file errors in FS storage pool
Currently a single storage volume with a broken backing file will disable the
whole storage pool. This can happen when the backing file is on some
unavailable network storage or if the backing volume is deleted, while the
storage volumes using it remain.
Since the storage pool can not be re-activated, re-creating the missing
or deleting the now useless volumes using libvirt only is not possible.

Fixing this is a little bit tricky:
1. virStorageBackendProbeTarget() only detects the missing backing file,
   if the backing file format is not explicitly specified. If the
   backing file is created using
	   kvm-img create -f qcow2 -o backing_fmt=qcow2,backing_file=... ...
   no error is detected at this stage.
   The new return code -3 signals that the backing file could not be
   opened.
2. The backingStore.format must be >= 0, since values < 0 would break
   virStorageVolTargetDefFormat() when dumping the XML data such as
       <format type='...'/>
   Because of this the format is faked as VIR_STORAGE_FILE_RAW.
3. virStorageBackendUpdateVolTargetInfo() always opens the backing file
   and thus always detects a missing backing file.
   Since it "only" updates the capacity, allocation, owner, group, mode
   and SELinux label, just ignore errors at this stage, print an error
   message and continue.
4. Using vol-dump on a broken volume still doesn't work, but at least
   vol-destroy and pool-refresh do work now.

To reproduce:
  dir=$(mktemp -d)
  virsh pool-create-as tmp dir '' '' '' '' "$dir"
  virsh vol-create-as --format qcow2 tmp back 1G
  virsh vol-create-as --format qcow2 --backing-vol-format qcow2 --backing-vol back tmp cow 1G
  virsh vol-delete --pool tmp back
  virsh pool-refresh tmp
After the last step, the pool will be gone (because it was not persistent). As
long as the now broken image stays in the directory, you will not be able to
re-create or re-start the pool.

Signed-off-by: Philipp Hahn <hahn@univention.de>
2011-03-11 09:54:44 -07:00
Osier Yang
d999376954 storage: Update qemu-img flag checking
For newer qemu-img, the help string for "backing file format" is
"[-F backing_fmt]".

Fix the wrong logic error by commit e997c268.

* src/storage/storage_backend.c
2011-03-10 15:02:28 +08:00
Osier Yang
e997c268ef qemu: Replace deprecated option of qemu-img
qemu-img silently disable "-e", so we can't use it for volume
encryption anymore, change it into "-o encryption=on" if qemu
supports "-o" option.
2011-03-10 10:05:14 +08:00
Cole Robinson
9189301426 Don't overwrite virRun error messages
virRun gives pretty useful error output, let's not overwrite it unless there
is a good reason. Some places were providing more information about what
the commands were _attempting_ to do, however that's usually less useful from
a debugging POV than what actually happened.
2011-03-09 08:53:12 -05:00
Daniel P. Berrange
35416720c2 Put <stdbool.h> into internal.h so it is available everywhere
Remove the <stdbool.h> header from all source files / headers
and just put it into internal.h

* src/internal.h: Add <stdbool.h>
2011-02-24 12:04:06 +00:00
Osier Yang
9f928af12b storage: make debug log more useful
"__func__" is useless there, as VIR_DEBUG will print the function
name.

* src/storage/storage_backend_mpath.c
2011-02-22 10:10:31 +08:00
Eric Blake
994e7567b6 maint: kill all remaining uses of old DEBUG macro
Done mechanically with:
$ git grep -l '\bDEBUG0\? *(' | xargs -L1 sed -i 's/\bDEBUG0\? *(/VIR_&/'

followed by manual deletion of qemudDebug in daemon/libvirtd.c, along
with a single 'make syntax-check' fallout in the same file, and the
actual deletion in src/util/logging.h.

* src/util/logging.h (DEBUG, DEBUG0): Delete.
* daemon/libvirtd.h (qemudDebug): Likewise.
* global: Change remaining clients over to VIR_DEBUG counterpart.
2011-02-21 08:46:52 -07:00
Osier Yang
df1011ca8e storage: Allow to delete device mapper disk partition
The name convention of device mapper disk is different, and 'parted'
can't be used to delete a device mapper disk partition. e.g.

Name                 Path
-----------------------------------------
3600a0b80005ad1d7000093604cae912fp1 /dev/mapper/3600a0b80005ad1d7000093604cae912fp1

Error: Expecting a partition number.

This patch introduces 'dmsetup' to fix it.

Changes:
  - New function "virIsDevMapperDevice" in "src/utils/utils.c"
  - remove "is_dm_device" in "src/storage/parthelper.c", use
    "virIsDevMapperDevice" instead.
  - Requires "device-mapper" for 'with-storage-disk" in "libvirt.spec.in"
  - Check "dmsetup" in 'configure.ac' for "with-storage-disk"
  - Changes on "src/Makefile.am" to link against libdevmapper
  - New entry for "virIsDevMapperDevice" in "src/libvirt_private.syms"

Changes from v1 to v3:
  - s/virIsDeviceMapperDevice/virIsDevMapperDevice/g
  - replace "virRun" with "virCommand"
  - sort the list of util functions in "libvirt_private.syms"
  - ATTRIBUTE_NONNULL(1) for virIsDevMapperDevice declaration.

e.g.

Name                 Path
-----------------------------------------
3600a0b80005ad1d7000093604cae912fp1 /dev/mapper/3600a0b80005ad1d7000093604cae912fp1

Vol /dev/mapper/3600a0b80005ad1d7000093604cae912fp1 deleted

Name                 Path
-----------------------------------------
2011-02-17 15:29:07 +08:00
Daniel P. Berrange
7020ffc0ed Fix leak in SCSI storage backend
The SCSI storage backend leaks a string containing the pathname
for each block device it discovers

* src/storage/storage_backend_scsi.c: Free the device name
2011-02-15 11:41:48 +00:00
Osier Yang
b958419534 storage: Create enough volumes for mpath pool
"virStorageBackendCreateVols":
  "names->next" serves as condition expression for "do...while",
however, "names" was shifted before, it then results in one less
loop, and thus, one less volume will be created for mpath pool,
the patch is to fix it.

* src/storage/storage_backend_mpath.c
2011-02-15 10:12:24 +08:00
Matthias Bolte
d9ad8ac392 Add VIR_DIV_UP to divide memory or storage request sizes with round up
Use it in all places where a memory or storage request size is converted
to a larger granularity. This avoids requesting too small memory or storage
sizes that could result from the truncation done by a simple division.

This extends the round up fix in 6002e0406c
to the whole codebase.

Instead of reporting errors for odd values in the VMX code round them up.

Update the QEMU Argv tests accordingly as the original memory size 219200
isn't a even multiple of 1024 and is rounded up to 215 megabyte now. Change
it to 219100 and 219136. Use two different values intentionally to make
sure that rounding up works.

Update virsh.pod accordingly, as rounding down and rejecting are replaced
by rounding up.
2011-01-29 00:42:10 +01:00