This patch adds the new options (--live and --config) to "virsh setmem" command.
The behavior of above options is the same as that of "virsh setvcpus" and so on.
That is, when the --config option is specified, a modification is effective for
the persistent domain. Moreover we can modify the memory size of inactive domains
as well as that of active domains.
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
This is needed to detect situations when optional argument was
specified with non-integer value: '--int-opt foo'. To keep functions
uniform vshCommandOptString function was also changed, because it
returns tri-state value as well. Given result pointer is updated only
in case of success. If parsing fails, result is not updated at all.
Not all applications have an existing event loop they need
to integrate with. Forcing them to implement the libvirt
event loop integration APIs is an undue burden. This just
exposes our simple poll() based implementation for apps
to use. So instead of calling
virEventRegister(....callbacks...)
The app would call
virEventRegisterDefaultImpl()
And then have a thread somewhere calling
static bool quit = false;
....
while (!quit)
virEventRunDefaultImpl()
* daemon/libvirtd.c, tools/console.c,
tools/virsh.c: Convert to public event loop APIs
* include/libvirt/libvirt.h.in, src/libvirt_private.syms: Add
virEventRegisterDefaultImpl and virEventRunDefaultImpl
* src/util/event.c: Implement virEventRegisterDefaultImpl
and virEventRunDefaultImpl using poll() event loop
* src/util/event_poll.c: Add full error reporting
* src/util/virterror.c, include/libvirt/virterror.h: Add
VIR_FROM_EVENTS
The event loop implementation is used by more than just the
daemon, so move it into the shared area.
* daemon/event.c, src/util/event_poll.c: Renamed
* daemon/event.h, src/util/event_poll.h: Renamed
* tools/Makefile.am, tools/console.c, tools/virsh.c: Update
to use new virEventPoll APIs
* daemon/mdns.c, daemon/mdns.c, daemon/Makefile.am: Update
to use new virEventPoll APIs
In a couple of commands virsh catches & ignores errors, but fails
to reset last_error. Thus the error is ignored, but still reported
to the user.
* tools/virsh.c: Reset last_error if ignoring an error
Virsh freecell --all was not only getting wrong NUMA nodes count, but
even the NUMA nodes IDs. They doesn't have to be continuous, as I've
found out during testing this. Therefore a modification of
nodeGetCellsFreeMemory() error message.
Compilation on mingw was warning about %lld use in fprintf, and
in the gnulib strptime module about dead labels.
* tools/virsh.c (vshPrint): Change redirect.
(vshPrintExtra): Allow use within vshPrint. Avoid fprintf on
arbitrary formats, since we aren't using gnulib module; instead,
use virVasprintf to pre-format.
(vshError): Likewise.
* .gnulib: Update to latest, for mingw strptime warning fix.
Reported by Matthias Bolte.
Win32 doesn't have a concept of signal masks so disable that
code. It is unclear how SIGINT is delivered (if at all) on
Win32, so this might further work to provide an alternative
to pthread_sigmask
* tools/virsh.c: Avoid pthread_sigmask on Win32
Currently users who want to use virDomainQemuMonitorCommand() API or
it's virsh equivalent has to use the same protocol as libvirt uses for
communication to qemu. Since the protocol is QMP with current qemu and
HMP much more usable for humans, one ends up typing something like the
following:
virsh qemu-monitor-command DOM \
'{"execute":"human-monitor-command","arguments":{"command-line":"info kvm"}}'
which is not a very convenient way of debugging qemu.
This patch introduces --hmp option to qemu-monitor-command, which says
that the provided command is in HMP. If libvirt uses QMP to talk with
qemu, the command will automatically be converted into QMP. So the
example above is simplified to just
virsh qemu-monitor-command --hmp DOM "info kvm"
Also the result is converted from
{"return":"kvm support: enabled\r\n"}
to just plain HMP:
kvm support: enabled
If libvirt talks to qemu in HMP, --hmp flag is obviously a noop.
* src/fdstream.c (virFDStreamOpenFile, virFDStreamCreateFile):
Use VIR_FORCE_CLOSE instead of close.
* tests/commandtest.c (mymain): Likewise.
* tools/virsh.c (editFile): Use virCommand instead of system.
* src/util/util.c (__virExec): Special case preservation of std
file descriptors to child.
If the memory of guest OS is changed constantly, the live migration
can not be ended ever for ever.
We can use the command 'virsh migrate-setmaxdowntime' to control the
live migration. But the value of maxdowntime is diffcult to calculate
because it depends on the transfer speed of network and constantly
changing memroy size. We need a easy way to control the live migration.
This patch adds the support of forcing guest to suspend at timeout.
With this patch, when we migrate the guest OS, we can specify a
timeout. If the live migration timeouts, auto-suspend the guest OS,
where the migration will complete offline.
While migration is in progress and virsh is waiting for its
completion, user may want to terminate the progress by pressing
Ctrl-C. But virsh just exits on user's Ctrl-C leaving migration
in background that user isn't even aware of. It's not reasonable.
This patch changes the behaviour for migration. For other
commands Ctrl-C still terminates virsh itself.
* .gnulib: Update to latest, for sigpipe and sigaction modules.
* bootstrap.conf (gnulib_modules): Add siaction, sigpipe, strerror_r.
* tools/virsh.c (vshSetupSignals) [!SIGPIPE]: Delete, now that
gnulib guarantees it.
(SA_SIGINFO): Define for mingw fallback.
* src/util/virterror.c (virStrerror): Simplify, now that gnulib
guarantees the POSIX interface.
* configure.ac (AC_CHECK_FUNCS_ONCE): Drop redundant check.
(AM_PROG_CC_STDC): Move earlier, to keep autoconf happy.
Display or set unlimited values for memory parameters. Unlimited is
represented by INT64_MAX in memory cgroup.
Signed-off-by: Nikunj A. Dadhania <nikunj@linux.vnet.ibm.com>
Reported-by: Justin Clift <jclift@redhat.com>
Remove the optional option "group", as cmdHelp should accepts
only one option ("virsh help" supports both command and command
group now, and user rarely uses the options, so it doesn't matter
much for it being longer, :-)
* tools/virsh.c
* tools/virsh.c (find-storage-pool-sources-as and find-storage-pool-sources
should't be in command group "Domain Management", move them to group
"Storage Pool".
* tools/virsh.c (virsh shouldn't use 'phy' as the disk driver if
user doesn't specify "--driver", it causes bugs, as not all of
hypervisor driver supports 'phy', and actually hypervisor should
known the correct default disk driver and subdriver, so remove it)
As virsh help supports both command and command group now,
update "cmdHelp" to print consite help, (this patch is
increment of "7829052757953023b0826e0293ffe18ed4ab89e9").
And also remove redundant empty line in "vshUsage".
* tools/virsh.c
The output was previously:
-c | --connect <uri> hypervisor connection URI
-r | --readonly connect readonly
-d | --debug <num> debug level [0-5]
-h | --help this help
-q | --quiet quiet mode
-t | --timing print timing information
-l | --log <file> output logging to file
-v | --version[=short] program version
-V | --version=long version and full options
(note the blank line between the --version types)
This patch removes the extra blank line.
Change the virsh help out. The new output of "virsh help" and
"virsh --help" will be like:
Secret (help keyword 'secret'):
secret-define define or modify a secret from an XML file
secret-dumpxml secret attributes in XML
secret-set-value set a secret value
secret-get-value Output a secret value
secret-undefine undefine a secret
secret-list list secrets
Snapshot (help keyword 'snapshot'):
snapshot-create Create a snapshot
snapshot-current Get the current snapshot
snapshot-delete Delete a domain snapshot
snapshot-dumpxml Dump XML for a domain snapshot
snapshot-list List snapshots for a domain
snapshot-revert Revert a domain to a snapshot
Also support output help information of specified command group, e.g.
% ./tools/virsh help "Network Filter"
Network Filter (help keyword 'filter'):
nwfilter-define define or update a network filter from an XML file
nwfilter-undefine undefine a network filter
nwfilter-dumpxml network filter information in XML
nwfilter-list list network filters
nwfilter-edit edit XML configuration for a network filter
Each group has a help keyword, e.g.
% ./tools/virsh help filter
Network Filter (help keyword 'filter'):
nwfilter-define define or update a network filter from an XML file
nwfilter-undefine undefine a network filter
nwfilter-dumpxml network filter information in XML
nwfilter-list list network filters
nwfilter-edit edit XML configuration for a network filter
* tools/virsh.c:
- introduce new struct "vshCmdGrp" and macros to define the groups.
- split previous array "commands" into small arrays which are orgnized
by group
- changed some functions, e.g. "vshCmdDefSearch"
- Added new functions, e.g. "vshCmdGrpSearch"
- commands of each group are in "alphabetical order" now.
- command groups are in "alphabetical order" now.
- the commands are categorized with reference of
http://wiki.libvirt.org/page/VirshHelpV2 (by Justin)
- the modifications doesn't affect tests
* TODO:
- doc
Making this change makes it easier to spot the memory leaks
that will be fixed in the next patch.
* cfg.mk (sc_prohibit_xmlGetProp): New rule.
* .x-sc_prohibit_xmlGetProp: New exception.
* Makefile.am (EXTRA_DIST): Ship exception file.
* tools/virsh.c (cmdDetachInterface, cmdDetachDisk): Adjust
offenders.
* src/conf/storage_conf.c (virStoragePoolDefParseSource):
Likewise.
* src/conf/network_conf.c (virNetworkDHCPRangeDefParseXML)
(virNetworkIPParseXML): Likewise.
virsh was not checking for a error code when listing storage
volumes. So when listing volumes in a pool that was shutoff,
no output was displayed
* tools/virsh.c: Fix error handling when listing volumes
The "find-storage-pool-sources-as" command takes two arguments,
a hostname and a port number. For some reason the code would
also then look for a port number appended to the hostname
string by searching for ':'. This totally breaks if the user
gives an IPv6 address, and is redundant, since you can already
provide a port as a separate argument
* tools/virsh.c: Remove bogus port number handling code
The code generating XML for storage pool source discovery is
hardcoded to only allow a hostname and optional port number.
Refactor this code to make it easier to add support for extra
parameters.
* tools/virsh.c: Refactor XML generator
Per the gettext developer:
http://lists.gnu.org/archive/html/bug-gnu-utils/2010-10/msg00019.htmlhttp://lists.gnu.org/archive/html/bug-gnu-utils/2010-10/msg00021.html
gettext() doesn't work correctly on all platforms unless you have
called setlocale(). Furthermore, gnulib's gettext.h has provisions
for setting up a default locale, which is the preferred method for
libraries to use gettext without having to call textdomain() and
override the main program's default domain (virInitialize already
calls bindtextdomain(), but this is insufficient without the
setlocale() added in this patch; and a redundant bindtextdomain()
in this patch doesn't hurt, but serves as a good example for other
packages that need to bind a second translation domain).
This patch is needed to silence a new gnulib 'make syntax-check'
rule in the next patch.
* daemon/libvirtd.c (main): Setup locale and gettext.
* src/lxc/lxc_controller.c (main): Likewise.
* src/security/virt-aa-helper.c (main): Likewise.
* src/storage/parthelper.c (main): Likewise.
* tools/virsh.c (main): Fix exit status.
* src/internal.h (DEFAULT_TEXT_DOMAIN): Define, for gettext.h.
(_): Simplify definition accordingly.
* po/POTFILES.in: Add src/storage/parthelper.c.
I am replacing the last instances of close() I found with VIR_CLOSE() / VIR_FORCE_CLOSE respectively.
The first part patches virsh, which I missed out on previously.
The 2nd patch I had left out intentionally to look at it more carefully:
The 'closed' variable could be easily removed since it wasn't used anywhere else. The possible race condition that could result from the filedescriptor being closed and not set to -1 (and possibly let us write into 'something' totally different if the fd was allocated by another thread) seems to be prevented by the qemuMonitorLock() already placed around the code that reads from or writes to the fd. So the change of this code as shown in the patch should not have any side-effects.
The event watches need to be removed before the event loop
terminates, otherwise they cause a dangling reference to
be held on the virStreamPtr, which in turns holds a reference
on virConnectPtr, which in turn causes errors like
"Failed to disconnect from the hypervisor"
* tools/console.c: Remove watches before event loop quits
* tools/virsh.c: Print out dangling reference count
This re-writes the 'virsh console' command so that it uses
the new streams API. This lets it run remotely and/or as a
non-root user. This requires that virsh be linked against
the simple event loop from libvirtd in daemon/event.c
As an added bonus, it can now connect to any console device,
not just the first one.
* tools/Makefile.am: Link to event.c
* tools/console.c, tools/console.h: Rewrite to use the
virDomainOpenConsole() APIs with streams
* tools/virsh.c: Support choosing the console name
via --devname $NAME
* tools/virsh.c (vshParseArgv): Use NULL instead of 0 for pointer,
and symbolic names for has_arg. Give --version an optional arg.
(vshUsage): Document this.
* tools/virsh.pod: Likewise.
Using automated replacement with sed and editing I have now replaced all
occurrences of close() with VIR_(FORCE_)CLOSE() except for one, of
course. Some replacements were straight forward, others I needed to pay
attention. I hope I payed attention in all the right places... Please
have a look. This should have at least solved one more double-close
error.
To ease debugging this trivial patch allows to find what was compiled
in in the local version of libvirt, this doesn't work for remote access
but that's probably sufficient. With the patch I get on my machine:
paphio:~/libvirt/tools -> ./virsh -V
Virsh command line tool of libvirt 0.8.4
See web site at http://libvirt.org/
Compiled with support for:
Hypervisors: Xen QEmu/KVM UML OpenVZ LXC ESX PHYP Test
Networking: Remote Daemon Network Bridging Netcf Nwfilter
Storage: Dir Disk Filesystem SCSI Multipath iSCSI LVM
Miscellaneous: SELinux Secrets Debug Readline
paphio:~/libvirt/tools ->
* tools/virsh.c: add -V option
* tools/virsh.pod: document the extension
Now that the virsh parsing has been revamped, we can
implement qemu-monitor-command. This is basically the same
as it was in previous iterations, but has now been tested to
work both with the plain text monitor and the QMP monitor.
Signed-off-by: Chris Lalancette <clalance@redhat.com>
* tools/virsh.c (opts_freecell, opts_memtune, opts_vcpupin)
(opts_setvcpus, opts_setmaxmem, opts_setmem)
(opts_migrate_setmaxdowntime): Use VSH_OT_INT when only an integer
is expected.
(vshCmddefHelp, vshCmddefGetData): Allow mandatory VSH_OT_INT
arguments.
* tools/virsh.c: add missing option from the CLI to allows setting
up the NIC model type when attaching an interface
* tools/virsh.pod: extend documentation
* AUTHORS: add Osier Yang to the list
* tools/virsh.c (cmdSetvcpus): Add new flags. Let invalid
commands through to driver, to ease testing of hypervisor argument
validation.
(cmdMaxvcpus, cmdVcpucount): New commands.
(commands): Add new commands.
* tools/virsh.pod (setvcpus, vcpucount, maxvcpus): Document new
behavior.
* tools/virsh.c (vshCmdOptType): Add VSH_OT_ARGV. Delete
unused VSH_OT_NONE.
(vshCmddefGetData): Special case new opt flag.
(vshCmddefHelp): Display help for argv.
(vshCommandOptArgv): New function.
This makes 'virsh --conn test:///default help help' work right;
previously, the abbreviation confused our hand-rolled option parsing.
* tools/virsh.c (vshParseArgv): Use getopt_long feature, rather
than (incorrectly) reparsing options ourselves.
Some users may type command like this at the virsh shell:
virsh # somecmd 'some arg'
because they often use single quote in linux shell.
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Old virsh command parsing mashes all the args back into a string and
miss the quotes, this patches fix it. It is also needed for introducing
qemu-monitor-command which is very useful.
This patches uses the new vshCommandParser abstraction and adds
vshCommandArgvParse() for arguments vector, so we don't need
to mash arguments vector into a command sting.
And the usage was changed:
old:
virsh [options] [commands]
new:
virsh [options]... [<command_string>]
virsh [options]... <command> [args...]
So we still support commands like:
"define D.xml; dumpxml D" was parsed as a commands-string.
and support commands like:
we will not mash them into a string, we use new argv parser for it.
But we don't support the command like:
"define D.xml; dumpxml" was parsed as a command-name, but we have no such command-name.
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
add vshCommandParser and make vshCommandParse() accept different
parsers.
the current code for parse command string is integrated as
vshCommandStringParse().
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
in old code the following commands are equivalent:
virsh # dumpxml --update-cpu=vm1
virsh # dumpxml --update-cpu vm1
because the old code split the option argument into 2 parts:
--update-cpu=vm1 is split into update-cpu and vm1,
and update-cpu is a boolean option, so the parser takes vm1 as another
argument, very strange.
after this patch applied, the first one will become illegal.
To achieve this, we don't parse/check options when parsing command sting,
but check options when parsing a command argument. And the argument is
not split when parsing command sting.
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
* tools/virsh.c (malloc, calloc, realloc, strdup): Enforce that
within this file, we use the safe vsh wrappers instead.
(cmdNodeListDevices, cmdSnapshotCreate, main): Fix violations of
this policy.
In origin code, double quote is only allowed at the begin or end
"complicated argument"
--some_opt="complicated string" (we split this argument into 2 parts,
option and data, the data is "complicated string").
This patch makes it allow double quote at any position of
an argument:
complicated" argument"
complicated" "argument
--"some opt=complicated string"
This patch is also needed for the following patches,
the following patches will not split option argument into 2 parts,
so we have to allow double quote at any position of an argument.
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
The command helps to control the memory/swap parameters for the system, for
eg. hard_limit (max memory the vm can use), soft_limit (limit during memory
contention), swap_hard_limit(max swap the vm can use)
cmdAttachInterface and cmdAttachDisk still used vshRealloc and sprintf
for generating XML, which is hardly maintainable. Let's get rid of this
old code.
Unless --driver tap|file option was given to attach-disk, virsh would
generate <disk type='block'> XML which might be fine for Xen but not for
other hypervisors. This patch introduces a new option --sourcetype which
can be used to explicitly set the type of disk source. The option
accepts either "file" or "block" types.
Virsh shouldn't check for driver support but rather let the backend handled this.
After removing the check, I can successfully attach file-based images to a qemu
VM with attach-disk.
% virsh attach-disk vm2 /images/test02.img vdc --driver qemu --type disk --subdriver raw
Disk attached successfully
This command generates the following XML:
<disk type='block' device='disk'>
<driver name='qemu' type='raw'/>
<source dev='/images/test02.img'/>
<target dev='vdc' bus='virtio'/>
<alias name='virtio-disk2'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/>
</disk>
Signed-off-by: Ryan Harper <ryanh@us.ibm.com>
it was using atoi direct without checking leading to confusion
in case of flag error for example with -c
* tools/virsh.c: vshParseArgv() use virStrToLong_i and remove the
unchecked atoi used to parse teh parameter
After playing around with virsh setmaxmem for a bit,
I ran into some surprising behavior; if a hypervisor does
not support the virDomainSetMaxMemory() API, but the value
specified for setmaxmem is less than the current amount
of memory in the domain, the domain would be ballooned
down *before* an error was reported.
To make this more consistent, run virDomainSetMaxMemory()
before trying to shrink; that way, if an error is thrown,
no changes to the running domain are made.
Signed-off-by: Chris Lalancette <clalance@redhat.com>
The virsh command "setmem" takes as input a number that
should represent an unsigned long number of kilobytes. Fix
cmdSetmem to properly parse this as an unsigned long instead
of an int.
Signed-off-by: Chris Lalancette <clalance@redhat.com>
The virsh option error reporting was not being used
consistently; some commands would spit out errors on
missing required options while others would just silently fail.
However, vshCommandOptString knows which ones are required
and which ones aren't, so make it spit out an error where
appropriate. The rest of the patch is just cleaning up
the uses of vshCommandOptString to deal with the new error
reporting.
Signed-off-by: Chris Lalancette <clalance@redhat.com>
When printing out size_t, we need to use %zu to make sure it
will continue to compile on both 32-bit and 64-bit platforms.
Signed-off-by: Chris Lalancette <clalance@redhat.com>
vshMalloc and friends always exit() on allocation failure,
so there is no reason to do checking for NULL in the code
that uses it.
Signed-off-by: Chris Lalancette <clalance@redhat.com>
