Commit Graph

27947 Commits

Author SHA1 Message Date
Dawid Zamirski
32845fd656 vbox: Remove old unflexible macros
The VBOX_SESSION_OPEN/CLOSE macros are only called in
_vboxDomainSnapshotRestore and they are unflexible because:

* assume the caller will have variable named "data"
* can only create Write lock type

As per above, it's not that hard to simply use the VBOX API directly.
2017-10-25 11:14:21 -04:00
Peter Krempa
f4973d1ea8 virsh: domain: Fix option handling in domxml-to-native
Commit fdeac7a05f tried to fix the output
of 'virsh domxml-to-native --help' by switching types around. One of the
changes broke the option parser. VSH_OT_ARGV should be used only for
variable argument count, not to make the help generator look pretty.

The correct option type in this case is VSH_OT_STRING as it's not
mandatory now since it can be substituted by using --domain.

This makes --help for this command look incorrect, but the parser works
as it should.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1494400
2017-10-24 11:21:27 +02:00
Jiri Denemark
f26636887f qemu: Reset hasManagedSave after removing a corrupted image
When starting a domain with managed save image, we try to restore it
first. If the image is corrupted, we silently unlink it and just
normally start the domain. At this point the domain has no managed save
image, yet we did not reset the hasManagedSave flag.

https://bugzilla.redhat.com/show_bug.cgi?id=1460962

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
2017-10-24 11:07:10 +02:00
Nikolay Shirokovskiy
05021e727d iohelper: use saferead if later write with O_DIRECT
One of the usecases of iohelper is to read from pipe and write
to file with O_DIRECT. As we read from pipe we can have partial
read and then we fail to write this data because output file
is open with O_DIRECT and buffer size is not aligned.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
2017-10-24 10:53:18 +02:00
Jiri Denemark
55ac6a5d44 qemu: Set correct job status when qemuMigrationRun fails
Instead of enumerating all states which need to be turned into
QEMU_DOMAIN_JOB_STATUS_FAILED (and failing to add all of them), it's
better to mention just the one which needs to be left alone.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2017-10-23 10:08:29 +02:00
Jiri Denemark
73a352263c qemu: Consistently use exit_monitor in qemuMigrationRun
Almost every failure in qemuMigrationRun while we are talking to QEMU
monitor results in a jump to exit_monitor label. The only exception is
removed by this patch.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2017-10-23 10:08:29 +02:00
Jiri Denemark
af32e57f8e qemu: Don't misuse "ret" in qemuMigrationRun
The "ret" variable is used for storing the return value of a function
and should not be used as a temporary variable.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2017-10-23 10:08:29 +02:00
Jiri Denemark
7d2fbabcaf qemu: Unite error handling in qemuMigrationRun
Merge cancel and cancelPostCopy sections with the generic error section,
where we can easily decide whether canceling the ongoing migration is
required.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2017-10-23 10:08:29 +02:00
Jiri Denemark
c1a643b68f qemu: Split cleanup and error code in qemuMigrationRun
Let cleanup only do things common to both failure and success paths and
move error handling code inside the new "error" section.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2017-10-23 10:08:29 +02:00
Jiri Denemark
f8ede9cc23 qemu: Refactor qemuMigrationRun a bit
Some code which was supposed to be executed only when migration
succeeded was buried inside the cleanup code.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2017-10-23 10:08:29 +02:00
Jiri Denemark
9603262377 qemu: Use switch in qemuMigrationCompleted
When adding a new job state it's useful to let the compiler complain
about places where we need to think about what to do with the new
state.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2017-10-23 10:08:29 +02:00
Michal Privoznik
8bf6426d6e news: Document user aliases
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2017-10-23 09:02:37 +02:00
Michal Privoznik
7e939394b2 tests: Test user set aliases for qemu
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2017-10-23 09:02:30 +02:00
Michal Privoznik
f3bc68e221 qemu: Parse alias from inactive XMLs
https://bugzilla.redhat.com/show_bug.cgi?id=1434451

This way users can uniquely identify devices at define time.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2017-10-23 09:01:46 +02:00
Michal Privoznik
93bc2c2126 docs: Document user aliases
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2017-10-23 08:58:10 +02:00
Michal Privoznik
0429e52f19 conf: Format alias even for inactive XMLs
We need to format alias even for inactive XMLs since that's the
way how users are going to identify their devices.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2017-10-23 08:56:55 +02:00
Michal Privoznik
821b0b295d qemuhotplugtest: Load active XML
The point of this test is to load live XML and test hotplug. But
even though the XMLs we are parsing are live, the parsing is done
with VIR_DOMAIN_DEF_PARSE_INACTIVE flag.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2017-10-23 08:53:51 +02:00
Michal Privoznik
a15c97f5e4 qemuxml2argvdata: Drop device aliases
The qemuxml2argvtest expects the domain XMLs to be inactive ones.
Therefore we should pass inactive XMLs.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2017-10-23 08:52:50 +02:00
Michal Privoznik
92f41b3297 qemuDomainABIStabilityCheck: Check for memory aliases too
Since we will be allowing users to set device aliases and memory
devices are fragile when it comes to aliases we have to make sure
they won't change during migration. Other devices should be fine.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2017-10-23 08:52:08 +02:00
Michal Privoznik
e2797e3256 conf: Validate user supplied aliases
They have to be unique within the domain. As usual, backwards
compatibility takes its price. In this particular situation we
have a device that is represented twice in a domain and so is its
alias.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2017-10-23 08:52:01 +02:00
Michal Privoznik
c14f1ed206 conf: Parse user supplied aliases
If driver that is calling the parse supports user supplied
aliases, they can be parsed even for inactive XMLs. However, to
avoid any clashes with aliases that libvirt generates, the user
ones have to have "ua-" prefix.

Note, that some drivers don't have notion of device aliases at
all. Also, in order to support user supplied aliases some extra
checks need to be done (e.g. during hotplug). Therefore we can't
just enable this feature for all the drivers. Thus we need a flag
that drivers set to tell parsing code that they can handle user
supplied device aliases.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2017-10-22 13:49:46 +02:00
Michal Privoznik
ad30f069d1 qemu_alias: Be more tolerant if alias don't follow our format
When assigning alias to a device we usually iterate over other
devices of its kind trying to find next index. We do this by
stripping down the prefix and then parsing number at the end,
Usually, if the prefix doesn't match the one we are expecting, we
just continue with next iteration. Except for couple of
functions: qemuGetNextChrDevIndex(),
qemuAssignDeviceRedirdevAlias() and qemuAssignDeviceShmemAlias().

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2017-10-22 13:49:46 +02:00
John Ferlan
08d4e16f88 conf: Rename [n]macs and maxmacs to [n]names and maxnames
To avoid further confusion - rename the array elements to what they are.
2017-10-20 14:48:23 -04:00
Pavel Hrdina
727238de25 conf: duplicate interface name instead of MAC provided to lookup the interface
Introduced by 6094d6ec7f.
Found by running libvirt-perl tests.

Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2017-10-20 16:28:38 +02:00
Julio Faracco
89622ebfad util: Missing 'removeTimeoutImpl' check variable inside virEventRegisterImpl() function.
The function virEventRegisterImpl() checks the attempt to replace the
registered events. But there is a duplicate variable inside the IF statement.
The variable 'removeHandleImpl' was wrongly repeated. One of them needs to be
replaced by 'removeTimeoutImpl'.

Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
2017-10-20 15:15:35 +02:00
Jiri Denemark
58c1e16951 qemu: Enhance debug message in qemuMonitorSetMigrationCapability
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2017-10-20 13:37:03 +02:00
Jiri Denemark
38b0e4f58f qemu: Drop qemuMonitorGetMigrationCapability
The only remaining user of qemuMonitorGetMigrationCapability is our test
suite. Let's replace qemuMonitorGetMigrationCapability with
qemuMonitorGetMigrationCapabilities there and drop the unused function.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2017-10-20 13:37:03 +02:00
Jiri Denemark
310287b1c9 qemu: Use bitmap with migration capabilities
All calls to qemuMonitorGetMigrationCapability in QEMU driver are
replaced with qemuMigrationCapsGet.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2017-10-20 13:37:03 +02:00
Jiri Denemark
765d9b1245 qemu: Store supported migration capabilities in a bitmap
Each time we need to check whether a given migration capability is
supported by QEMU, we call query-migrate-capabilities QMP command and
lookup the capability in the returned list. Asking for the list of
supported capabilities once when we connect to QEMU and storing the
result in a bitmap is much better and we don't need to enter a monitor
just to check whether a migration capability is supported.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2017-10-20 13:36:56 +02:00
Jiri Denemark
19bade7ad9 qemu: Create a wrapper around qemuMonitorSetCapabilities
The new function is called qemuProcessInitMonitor and it will enter/exit
the monitor so that the caller doesn't have to deal with this.

The goal of this patch is to simplify the code in qemuConnectMonitor
which would otherwise be a bit hairy after the following patch.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2017-10-20 09:08:45 +02:00
John Ferlan
6094d6ec7f interfaces: Convert virInterfaceObjList to virObjectRWLockable
Rather than a forward linked list, let's use the virHashTable in
order to manage the objsName data.

Requires numerous changes from List to Object management similar to
many other drivers/vir*obj.c modules
2017-10-19 15:42:47 -04:00
John Ferlan
4102e22864 interface: Make _virInterfaceObjList virObjectRWLockable
Modify the allocation to be a real RWLockable object and add the
various RWLock{Read|Write} and RWUnlock calls to process the list
of interfaces.
2017-10-19 15:39:44 -04:00
John Ferlan
37537a7c64 conf: Add/Allow parsing the encryption in the disk source
Since the virStorageEncryptionPtr encryption; is a member of
 _virStorageSource it really should be allowed to be a subelement
of the disk <source> for various disk formats:

   Source{File|Dir|Block|Volume}
   SourceProtocol{RBD|ISCSI|NBD|Gluster|Simple|HTTP}

NB: Simple includes sheepdog, ftp, ftps, tftp

That way we can set up to allow the <encryption> element to be
formatted within the disk source, but we still need to be wary
from whence the element was read - see keep track and when it
comes to format the data, ensure it's written in the correct place.

Modify the qemuxml2argvtest to add a parse failure when there is an
<encryption> as a child of <disk> *and* an <encryption> as a child
of <source>.

The virschematest will read the new test files and validate from a
RNG viewpoint things are fine.
2017-10-19 15:32:50 -04:00
John Ferlan
8002d3cb1b conf: Add/Allow parsing the auth in the disk source
Since the virStorageAuthDefPtr auth; is a member of _virStorageSource
it really should be allowed to be a subelement of the disk <source>
for the RBD and iSCSI prototcols. That way we can set up to allow
the <auth> element to be formatted within the disk source.

Since we've allowed the <auth> to be a child of <disk>, we'll need
to keep track of how it was read so that when writing out we'll know
whether to format as child of <disk> or <source>. For the argv2xml
parsing, let's format under <source> as a preference. Do not allow
<auth> to be both a child of <disk> and <source>.

Modify the qemuxml2argvtest to add a parse failure when there is an
<auth> as a child of <disk> *and* an <auth> as a child of <source>.

Add tests to validate that if the <auth> was found in <source>, then
the resulting xml2xml and xml2arg works just fine.  The two new .args
file are exact copies of the non "-source" version of the file.

The virschematest will read the new test files and validate from a
RNG viewpoint things are fine

Update the virstoragefile, virstoragetest, and args2xml file to show
the "preference" to place <auth> as a child of <source>.
2017-10-19 15:26:49 -04:00
John Ferlan
0e2e22485e qemu: Move encinfo from private disk to private disk src
Since the encryption information can also be disk source specific
move it from qemuDomainDiskPrivate to qemuDomainStorageSourcePrivate

Since the last allocated element from qemuDomainDiskPrivate is
removed, that means we no longer need qemuDomainDiskPrivateDispose.

Signed-off-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
2017-10-19 18:20:30 +02:00
John Ferlan
ab0e32fbdf qemu: Relocate qemuDomainSecretInfoPtr to qemuDomainStorageSourcePrivate
Since the secret information is really virStorageSource specific
piece of data, let's manage the privateData from there instead of
at the Disk level.

Signed-off-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
2017-10-19 18:20:30 +02:00
John Ferlan
3ff3eb70c7 qemu: Introduce privateData object for virStorageSource
Add the object definition and helpers to store security-related private
data for virStorageSources.

Signed-off-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
2017-10-19 18:20:30 +02:00
John Ferlan
1f38445e43 util: storage: Introduce privateData for _virStorageSource
Introduce the bare necessities to add privateData to _virStorageSource.

Signed-off-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
2017-10-19 18:20:30 +02:00
John Ferlan
76a5ca62fb qemu: Add missing encinfo cleanup
When commit id 'da86c6c22' added support for diskPriv->encinfo in
qemuDomainSecretDiskPrepare a change to qemuDomainSecretDiskDestroy
to was missed. Although qemuDomainDiskPrivateDispose probably would
do the trick.

Signed-off-by: John Ferlan <jferlan@redhat.com>
2017-10-19 18:20:30 +02:00
Michal Privoznik
4f15707202 qemu-ns: Detect /dev/* mount point duplicates better
https://bugzilla.redhat.com/show_bug.cgi?id=1495511

When creating new /dev for domain ran in namespace we try to
preserve all sub-mounts of /dev. Well, not quite all. For
instance if /dev/foo/bar and /dev/foo are both mount points, only
/dev/foo needs preserving. /dev/foo/bar is preserved with it too.
Now, to identify such cases like this one STRPREFIX() is used.
That is not good enough. While it works for [/dev/foo/bar;
/dev/foo] case, it fails for [/dev/prefix; /dev/prefix2] where
the strings share the same prefix but are in fact two different
paths. The solution is to use STRSKIP().

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
2017-10-19 17:33:31 +02:00
Michal Privoznik
eebfdcb41e conf: Pass xmlopt down to virDomainDeviceInfoParseXML
This function is going to make decisions based on the features
set per each driver. For that we need the virDomainXMLOption
object.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2017-10-19 17:33:29 +02:00
Michal Privoznik
6bc4a371cf qemu: Be tolerant to preexisting aliases
In the future, some aliases might be already parsed therefore we
should avoid overwriting them.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2017-10-19 17:33:27 +02:00
Michal Privoznik
215ab7aa03 qemu: Move device alias assignment to separate functions
Let's move all the virAsprintf()-s into separate functions for
better structure of the code. Later, when somebody wants to
generate a device alias, all they need is to expose the function.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2017-10-19 17:32:50 +02:00
Michal Privoznik
16bb5a710e qemuAssignDeviceAliases: Use qemuAssignDeviceRNGAlias for assigning RNG aliases
We have a special function for assigning aliases to RNG devices.
Use that instead of plain virAsprintf().

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2017-10-19 17:28:56 +02:00
Michal Privoznik
93ef9cf21d virDomainObjGetOneDefState: Fix error message
It looks like the error message was copied from virsh, because
that's where we have @ctl. Nevertheless, it's @flags which is
invalid, not @ctl.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2017-10-19 17:28:56 +02:00
Peter Krempa
05d4323989 qemu: hotplug: Reuse qemuDomainAttachDiskGeneric in qemuDomainAttachUSBMassStorageDevice
Apart from killing a lot of code this also "implements" authentication
and encryption for USB disks.
2017-10-19 15:04:00 +02:00
Peter Krempa
4e6ac368a5 qemu: hotplug: Reuse qemuDomainAttachDiskGeneric in qemuDomainAttachSCSIDisk
Get rid of the first copy of the mess.
2017-10-19 15:02:44 +02:00
Peter Krempa
5b0dc7fdfd qemu: hotplug: extract disk hotplug worker code
This horrible piece of spaghetti code is copy-past(ae)d in the SCSI and
USB disk hotplug code with minimal changes. Extract it for further
reuse.
2017-10-19 15:00:58 +02:00
Peter Krempa
3c437ebf40 qemu: hotplug: Use disk target in debug/warning messages where appropriate
Some messages deal with the disk itself thus using the disk target is
better than using the disk source name which can be NULL in some cases.
2017-10-19 14:50:50 +02:00
Peter Krempa
c01a2e057f qemu: hotplug: Remove wrong check for empty disks
The check if the disk is empty is wrong and would spuriously reject NBD
sources. Remove it.
2017-10-19 14:50:50 +02:00