The current output of 'blockjob [--info]' is a single line
designed for human consumption; it's not very nice for machine
parsing. Furthermore, I have plans to modify the line in
response to the new flag for controlling bandwidth units.
Solve that by adding a --raw parameter, which outputs
information closer to the C struct.
$ virsh blockjob testvm1 vda --raw
type=Block Copy
bandwidth=1
cur=197120
end=197120
The information is indented, because I'd like for a later patch
to add a mode that iterates over all the vm's disks with status
for each; in that mode, each block name would be listed unindented
before information (if any) about that block.
Now that we have a raw mode, we can guarantee that it won't change
format over time. Any app that cares about parsing the output can
try --raw, and if it fails, know that it was talking to an older
virsh and fall back to parsing the human-readable format which had
not changed until now; meanwhile, when not using --raw, we have
freed future virsh to change the output to whatever makes sense.
My first change to human mode: this command now guarantees a line
is printed on successful use of the API, even when the API did
not find a current block job (consistent with the rest of virsh).
Bonus: https://bugzilla.redhat.com/show_bug.cgi?id=1135441
complained that this message was confusing:
$ virsh blockjob test1 hda --async --bandwidth 10
error: conflict between --abort, --info, and --bandwidth modes
even though the man page already documents that --async implies
abort mode, all because '--abort' wasn't present in the command
line. Since I'm adding another case where options are tied
to or imply a mode, I changed that error to:
error: conflict between abort, info, and bandwidth modes
* tools/virsh-domain.c (cmdBlockJob): Add --raw parameter; tweak
error wording.
* tools/virsh.pod (blockjob): Document it.
Signed-off-by: Eric Blake <eblake@redhat.com>
I have plans to make future enhancements to the job list mode,
which will be easier to do if the common blockJobImpl function
is not mixing a query command with multiple modify commands.
Besides, it just feels weird that all callers to blockJobImpl
had to supply both a bandwidth input argument (unused for info
mode) and an info output argument (unused for all other modes);
not to mention I just made similar cleanups on the libvirtd
side.
The only reason blockJobImpl returned int was because of info
mode returning -1/0/1 (all other job API are -1/0), so that
can also be cleaned up. No user-visible changes in this commit.
* tools/virsh-domain.c (blockJobImpl): Change signature and return
value. Drop info handling.
(cmdBlockJob): Handle info here.
(cmdBlockCommit, cmdBlockCopy, cmdBlockPull): Adjust callers.
Signed-off-by: Eric Blake <eblake@redhat.com>
While prepping for virDomainBlockJob patches, I found some dead code.
* tools/virsh-domain.c (blockJobImpl): Kill unused 'name'.
Signed-off-by: Eric Blake <eblake@redhat.com>
A possible fix to issue:
http://www.redhat.com/archives/libvir-list/2014-August/thread.html#00227
While doing migration on KVM host, found problem sometimes:
VM is already running on the target host and disappears from source
host, but 'virsh migrate' command line hangs, cannot exit normally.
If pressing "ENTER" key, it will exit.
The code hangs at tools/virsh-domain.c: cmdMigrate
->vshWatchJob->poll():
poll() is trying to select pipe_fd, which is used to receive message
from doMigrate thread. In debugging, found that doMigrate finishes
and at the end it does call safewrite() to write the retval ('0' or
'1') to pipe_fd, and the write is completed. But cmdMigrate poll()
cannot get the event. If pressing "ENTER" key, poll() can get the
event and select pipe_fd, then command line can exit.
In current code, authentication thread which is called by vshConnect
will use stdin, and at the same time, in cmdMigrate main process,
poll() is listening to stdin, that probably affect poll() to get
pipe_fd event. Better to move authentication before vshWatchJob. With
this change, above problem does not exist.
Signed-off-by: Chunyan Liu <cyliu@suse.com>
We parse the bandwidth rates as unsinged long long,
then try to fit them in VIR_TYPED_PARAM_UINT.
Report an error if they exceed UINT_MAX instead of
quietly using wrong values.
https://bugzilla.redhat.com/show_bug.cgi?id=1043735
In many places we define a variable as a 'const char *' when in fact
we modify it just a few lines below. Or even free it. We should not do
that.
There's one exception though, in xenSessionFree() xenapi_utils.c. We
are freeing the xen_session structure which is defined in
xen/api/xen_common.h public header. The structure contains session_id
which is type of 'const char *' when in fact it should have been just
'char *'. So I'm leaving this unmodified, just noticing the fact in
comment.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
According to the code, 'virsh numatune' supports integers for
specifying --mode as well as the string definitions "strict",
"interleave", and "preferred". However, this possibility was not
documented anywhere, so this patch adds it to both the man page and
command help.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1085706
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Introduce flag for the block rebase API to allow the rebase operation to
leave the chain relatively addressed. Also adds a virsh switch to enable
this behavior.
Introduce flag for the block commit API to allow the commit operation to
leave the chain relatively addressed. Also adds a virsh switch to enable
this behavior.
Similary to cmdDetachDisk fetch the inactive definition when --config
is specified as the active may not contain the network interface
if it was plugged with --config.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1056902
By default, the bus type is inferred from the style of the device
name('target' in this command), e.g. a device named 'sda' will
typically be exported using a SCSI bus. Actually, not only SCSI bus,
but USB/SATA bus also use this kind of device name. So add '--bus'
option for attach-disk command to allow user specify the target bus.
Signed-off-by: Yanbing Du <ydu@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The new VIR_CONNECT_COMPARE_CPU_FAIL_INCOMPATIBLE flag for
virConnectCompareCPU can be used to get an error
(VIR_ERR_CPU_INCOMPATIBLE) describing the incompatibility instead of the
usual VIR_CPU_COMPARE_INCOMPATIBLE return code.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Add knobs to virsh to manage a 2-phase active commit of the top
layer, similar to knobs already present on blockcopy. While this
code will fail until later patches actually implement the new
knobs in the qemu driver, doing it now proves that the API is
usable and also makes it easier for testing the qemu changes as
they are made.
* tools/virsh-domain.c (cmdBlockCommit): Add --active, --pivot,
and --keep-overlay options, modeled after blockcopy.
(blockJobImpl): Support --active flag.
* tools/virsh.pod (blockcommit): Document new flags.
(blockjob): Mention 2-phase commit interaction.
Signed-off-by: Eric Blake <eblake@redhat.com>
When the block job event was first added, it was for block pull,
where the active layer of the disk remains the same name. It was
also in a day where we only cared about local files, and so we
always had a canonical absolute file name. But two things have
changed since then: we now have network disks, where determining
a single absolute string does not really make sense; and we have
two-phase jobs (copy and active commit) where the name of the
active layer changes between the first event (ready, on the old
name) and second (complete, on the pivoted name).
Adam Litke reported that having an unstable string between events
makes life harder for clients. Furthermore, all of our API that
operate on a particular disk of a domain accept multiple strings:
not only the absolute name of the active layer, but also the
destination device name (such as 'vda'). As this latter name is
stable, even for network sources, it serves as a better string
to supply in block job events.
But backwards-compatibility demands that we should not change the
name handed to users unless they explicitly request it. Therefore,
this patch adds a new event, BLOCK_JOB_2 (alas, I couldn't think of
any nicer name - but at least Migrate2 and Migrate3 are precedent
for a number suffix). We must double up on emitting both old-style
and new-style events according to what clients have registered for
(see also how IOError and IOErrorReason emits double events, but
there the difference was a larger struct rather than changed
meaning of one of the struct members).
Unfortunately, adding a new event isn't something that can easily
be broken into pieces, so the commit is rather large.
* include/libvirt/libvirt.h.in (virDomainEventID): Add a new id
for VIR_DOMAIN_EVENT_ID_BLOCK_JOB_2.
(virConnectDomainEventBlockJobCallback): Document new semantics.
* src/conf/domain_event.c (_virDomainEventBlockJob): Rename field,
to ensure we catch all clients.
(virDomainEventBlockJobNew): Add parameter.
(virDomainEventBlockJobDispose)
(virDomainEventBlockJobNewFromObj)
(virDomainEventBlockJobNewFromDom)
(virDomainEventDispatchDefaultFunc): Adjust clients.
(virDomainEventBlockJob2NewFromObj)
(virDomainEventBlockJob2NewFromDom): New functions.
* src/conf/domain_event.h: Add new prototypes.
* src/libvirt_private.syms (domain_event.h): Export new functions.
* src/qemu/qemu_driver.c (qemuDomainBlockJobImpl): Generate two
different events.
* src/qemu/qemu_process.c (qemuProcessHandleBlockJob): Likewise.
* src/remote/remote_protocol.x
(remote_domain_event_block_job_2_msg): New struct.
(REMOTE_PROC_DOMAIN_EVENT_BLOCK_JOB_2): New RPC.
* src/remote/remote_driver.c
(remoteDomainBuildEventBlockJob2): New handler.
(remoteEvents): Register new event.
* daemon/remote.c (remoteRelayDomainEventBlockJob2): New handler.
(domainEventCallbacks): Register new event.
* tools/virsh-domain.c (vshEventCallbacks): Likewise.
(vshEventBlockJobPrint): Adjust client.
* src/remote_protocol-structs: Regenerate.
Signed-off-by: Eric Blake <eblake@redhat.com>
Peter's review of an early version of my addition of active block
commit pointed out some issues that I was copying from the block
copy code; fix them up now before perpetuating them.
For virsh commands that manage a single API call, it's nice to have
a 1:1 mapping of options to flags, so that we can test that
lower-layer software handles flag combinations correctly. But where
virsh is introducing syntactic sugar to combine multiple API calls
into a single user interface, we might as well make that interface
compact. That is, we should allow the shorter command-line of
'blockcopy $dom $disk --pivot' without having to explicitly specify
--wait, because this isn't directly a flag passed to a single
underlying API call.
Also, my use of embedded ?: ternaries bordered on unreadable.
* tools/virsh-domain.c (cmdBlockCopy): Make --pivot, --finish,
and --timeout imply --wait. Drop excess ?: operators.
* tools/virsh.pod (blockcopy): Update documentation.
Signed-off-by: Eric Blake <eblake@redhat.com>
The vcpupin command allowed specifying a negative number for the --vcpu
argument. This would the overflow when the underlying virDomainPinVcpu
API was called.
$ virsh vcpupin r7 -1 0
error: numerical overflow: input too large: 4294967295
Switch the vCPU variable to a unsigned int and parse it using the
corresponding function.
Also improve the vcpupin test to cover all the defects.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1101059
Signed-off-by: Jincheng Miao <jmiao@redhat.com>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
To follow the new semantics of the vshCommandOptToU* functions convert
this one to reject negative numbers too. To allow using -1 for "maximum"
semantics for the two bandwidth functions that use this helper introduce
vshCommandOptULWrap. Although currently the migrate-setspeed function
for the qemu driver will reject -1 as maximum.
Now that qemu 2.0 allows commit of the active layer, people are
attempting to use virsh blockcommit and getting into a stuck
state, because libvirt is unprepared to handle the two-phase
commit required by qemu.
Stepping back a bit, there are two valid semantics for a
commit operation:
1. Maintain a 'golden' base, and a transient overlay. Make
changes in the overlay, and if everything appears to work,
commit those changes into the base, but still keep the overlay
for the next round of changes; repeat the cycle as desired.
2. Create an external snapshot, then back up the stable state
in the backing file. Once the backup is complete, commit the
overlay back into the base, and delete the temporary snapshot.
Since qemu doesn't know up front which of the two styles is
preferred, a block commit of the active layer merely gets
the job into a synchronized state, and sends an event; then
the user must either cancel (case 1) or complete (case 2),
where qemu then sends a second event that actually ends the
job. However, until commit e6bcbcd, libvirt was blindly
assuming the semantics that apply to a commit of an
intermediate image, where there is only one sane conclusion
(the job automatically ends with fewer elements in the chain);
and getting stuck because it wasn't prepared for qemu to enter
a second phase of the job.
This patch adds a flag to the libvirt API that a user MUST
supply in order to acknowledge that they will be using two-phase
semantics. It might be possible to have a mode where if the
flag is omitted, we automatically do the case 2 semantics on
the user's behalf; but before that happens, I must do additional
patches to track the fact that we are doing an active commit
in the domain XML. Later patches will add support of the flag,
and once 2-phase semantics are working, we can then decide
whether to relax things to allow an omitted flag to cause an
automatic pivot.
* include/libvirt/libvirt.h.in (VIR_DOMAIN_BLOCK_COMMIT_ACTIVE)
(VIR_DOMAIN_BLOCK_JOB_TYPE_ACTIVE_COMMIT): New enums.
* src/libvirt.c (virDomainBlockCommit): Document two-phase job
when committing active layer, through new flag.
(virDomainBlockJobAbort): Document that pivot also occurs after
active commit.
* tools/virsh-domain.c (vshDomainBlockJob): Cover new job.
* src/qemu/qemu_driver.c (qemuDomainBlockCommit): Explicitly
reject active copy; later patches will add it in.
Signed-off-by: Eric Blake <eblake@redhat.com>
Report CPU affinities / online CPUs in human-readable form when
this flag is present:
Before:
CPU Affinity: y-yy
After:
CPU Affinity: 0,2-3 (out of 4)
https://bugzilla.redhat.com/show_bug.cgi?id=985980
For now, if only '--wipe-storage' is assigned, user can undefine a
domain normally. But actually '--wipe-storage' doesn't do anything,
and this may confuse user. Better is to require that '--wipe-storage'
only works if the user specifies volumes to be removed.
Before:
$ virsh undefine virt-tests-vm1 --wipe-storage
Domain virt-tests-vm1 has been undefined
After:
$ virsh undefine virt-tests-vm1 --wipe-storage
error: '--wipe-storage' requires '--storage <string>' or '--remove-all-storage'
Signed-off-by: Li Yang <liyang.fnst@cn.fujitsu.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Commit 9976c4b9a6 broke the output for VNC
displays as the port number is converted to VNC display number by
subtracting 5900. This yields port 0 for the first display and thus the
output would be skipped.
Before:
$ virsh domdisplay VM
vnc://localhost
After:
$ tools/virsh domdisplay VM
vnc://localhost:0
'virsh help event' included a summary line "event - (null)"
due to a misnamed info field.
* tools/virsh-domain.c (info_event): Use correct name.
* tools/virsh-network.c (info_network_event): Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
This patch adds "[--format] <string>" to "virsh dump --memory-only", which is
changed to use the new virDomainCoreDumpWithFormat API.
Signed-off-by: Qiao Nuohan <qiaonuohan@cn.fujitsu.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Busy enterprise workloads hosted on large sized VM's tend to dirty
memory faster than the transfer rate achieved via live guest migration.
Despite some good recent improvements (& using dedicated 10Gig NICs
between hosts) the live migration may NOT converge.
Recently support was added in qemu (version 1.6) to allow a user to
choose if they wish to force convergence of their migration via a
new migration capability : "auto-converge". This feature allows for qemu
to auto-detect lack of convergence and trigger a throttle-down of the
VCPUs.
This patch includes the libvirt support needed to trigger this
feature. (Testing is in progress)
Signed-off-by: Chegu Vinod <chegu_vinod@hp.com>
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
When listening for a subset of monitor events, it can be tedious
to register for each event name in series; nicer is to register
for multiple events in one go. Implement a flag to use regex
interpretation of the event filter.
While at it, prove how much I hate the shift key, by adding a
way to filter for 'shutdown' instead of 'SHUTDOWN'. :)
* include/libvirt/libvirt-qemu.h
(virConnectDomainQemuMonitorEventRegisterFlags): New enum.
* src/libvirt-qemu.c (virConnectDomainQemuMonitorEventRegister):
Document flags.
* tools/virsh-domain.c (cmdQemuMonitorEvent): Expose them.
* tools/virsh.pod (qemu-monitor-event): Document this.
* src/conf/domain_event.c
(virDomainQemuMonitorEventStateRegisterID): Add flags.
(virDomainQemuMonitorEventFilter): Handle regex, and optimize
client side.
(virDomainQemuMonitorEventCleanup): Clean up regex.
Signed-off-by: Eric Blake <eblake@redhat.com>
Any new API deserves a good virsh wrapper :)
qemu-monitor-event [<domain>] [<event>] [--pretty] [--loop] [--timeout <number>]
Very similar to the previous work on 'virsh event'. For an
example session:
$ virsh -c qemu:///system qemu-monitor-event --event SHUTDOWN&
$ virsh -c qemu:///system start f18-live
Domain f18-live started
$ virsh -c qemu:///system destroy f18-live
Domain f18-live destroyed
event SHUTDOWN at 1391212552.026544 for domain f18-live: (null)
events received: 1
[1]+ Done virsh -c qemu:///system qemu-monitor-event --event SHUTDOWN
$
* tools/virsh-domain.c (cmdQemuMonitorEvent): New command.
* tools/virsh.pod (qemu-monitor-event): Document it.
Signed-off-by: Eric Blake <eblake@redhat.com>
We allow translation from no_bandwidth to has_bandwidth for a vnic.
However, going in the opposite direction is not implemented. It's not
limitation of the API rather than internal implementation. The problem
is, we correctly detect that user hasn't specified any outbound (say
he wants to clear out outbound). However, this gets overwritten by
current vnic outbound settings. Then, virNetDevBandwidthSet doesn't
change anything. We need to stop overwriting the outbound if users
don't want us to. Same applies for inbound.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Introducing keepalive similarly to Guannan around 2 years ago. Since
we want to introduce keepalive for every connection, it makes sense to
wrap the connecting function into new virsh one that can deal
keepalive as well.
Function vshConnect() is now used for connecting and keepalive added
in that function (if possible) helps preventing long waits e.g. while
nework goes down during migration.
This patch also adds the options for keepalive tuning into virsh and
fails connecting only when keepalives are explicitly requested and
cannot be set (whether it is due to missing support in connected
driver or remote server). If not explicitely requested, a debug
message is printed (hence the addition to virsh-optparse test).
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1073506
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=822839
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
'virsh lxc-enter-namespace' does not have a way to reflect exit
status to the caller in single-command mode, but we might as well
at least report the exit status. Prior to this patch,
$ virsh -c lxc:/// lxc-enter-namespace shell /bin/sh 'exit 3'; echo $?
1
now it gives some details:
$ virsh -c lxc:/// lxc-enter-namespace shell /bin/sh -c 'exit 3'; echo $?
error: internal error: Child process (31557) unexpected exit status 3
1
Also useful:
$ virsh -c lxc:/// lxc-enter-namespace shell /bin/sh -c 'kill $$'; echo $?
error: internal error: Child process (31585) unexpected fatal signal 15
1
* tools/virsh-domain.c (cmdLxcEnterNamespace): Avoid magic numbers.
Dispatch any error.
* tools/virsh.pod: Document that non-zero exit status is collapsed.
Signed-off-by: Eric Blake <eblake@redhat.com>
The old semantics of virFork() violates the priciple of good
usability: it requires the caller to check the pid argument
after use, *even when virFork returned -1*, in order to properly
abort a child process that failed setup done immediately after
fork() - that is, the caller must call _exit() in the child.
While uses in virfile.c did this correctly, uses in 'virsh
lxc-enter-namespace' and 'virt-login-shell' would happily return
from the calling function in both the child and the parent,
leading to very confusing results. [Thankfully, I found the
problem by inspection, and can't actually trigger the double
return on error without an LD_PRELOAD library.]
It is much better if the semantics of virFork are impossible
to abuse. Looking at virFork(), the parent could only ever
return -1 with a non-negative pid if it misused pthread_sigmask,
but this never happens. Up until this patch series, the child
could return -1 with non-negative pid if it fails to set up
signals correctly, but we recently fixed that to make the child
call _exit() at that point instead of forcing the caller to do
it. Thus, the return value and contents of the pid argument are
now redundant (a -1 return now happens only for failure to fork,
a child 0 return only happens for a successful 0 pid, and a
parent 0 return only happens for a successful non-zero pid),
so we might as well return the pid directly rather than an
integer of whether it succeeded or failed; this is also good
from the interface design perspective as users are already
familiar with fork() semantics.
One last change in this patch: before returning the pid directly,
I found cases where using virProcessWait unconditionally on a
cleanup path of a virFork's -1 pid return would be nicer if there
were a way to avoid it overwriting an earlier message. While
such paths are a bit harder to come by with my change to a direct
pid return, I decided to keep the virProcessWait change in this
patch.
* src/util/vircommand.h (virFork): Change signature.
* src/util/vircommand.c (virFork): Guarantee that child will only
return on success, to simplify callers. Return pid rather than
status, now that the situations are always the same.
(virExec): Adjust caller, also avoid open-coding process death.
* src/util/virprocess.c (virProcessWait): Tweak semantics when pid
is -1.
(virProcessRunInMountNamespace): Adjust caller.
* src/util/virfile.c (virFileAccessibleAs, virFileOpenForked)
(virDirCreate): Likewise.
* tools/virt-login-shell.c (main): Likewise.
* tools/virsh-domain.c (cmdLxcEnterNamespace): Likewise.
* tests/commandtest.c (test23): Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
Right now, a caller waiting for a child process either requires
the child to have status 0, or must use WIFEXITED() and friends
itself. But in many cases, we want the middle ground of treating
fatal signals as an error, and directly accessing the normal exit
value without having to use WEXITSTATUS(), in order to easily
detect an expected non-zero exit status. This adds the middle
ground to the low-level virProcessWait; the next patch will add
it to virCommand.
* src/util/virprocess.h (virProcessWait): Alter signature.
* src/util/virprocess.c (virProcessWait): Add parameter.
(virProcessRunInMountNamespace): Adjust caller.
* src/util/vircommand.c (virCommandWait): Likewise.
* src/util/virfile.c (virFileAccessibleAs): Likewise.
* src/lxc/lxc_container.c (lxcContainerHasReboot)
(lxcContainerAvailable): Likewise.
* daemon/libvirtd.c (daemonForkIntoBackground): Likewise.
* tools/virt-login-shell.c (main): Likewise.
* tools/virsh-domain.c (cmdLxcEnterNamespace): Likewise.
* tests/testutils.c (virtTestCaptureProgramOutput): Likewise.
* tests/commandtest.c (test23): Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
Similar to our event-test demo program, it's nice to be able to
have a mode where we can sniff all events at once, rather than
having to spawn multiple virsh in parallel with one for each
event type.
(Can I just say our RegisterAny design is lousy? The fact that
the majority of our callback pointers have a function signature
with the opaque data in a different position, and that we have
to cast the function signature before registering it, makes it
hard to write a generic callback function; we have to write one
for every type of event id. Life would have been easier if we
had designed the callback as a fixed signature with a void*
and size parameter, and then allowed the caller to downcast
the void* to a particular struct for data specific to their
callback id, where we could have then had a single function
with a switch statement for each event id, and register that
one function for all types of events. It would also be nicer
if the callback functions knew which callbackID was being used
when invoking that callback, so that I could use a common data
structure among all registrations instead of having to create
an array of one data per callback. But I really don't want to
go add yet another event API design.)
* tools/virsh-domain.c (cmdEvent): Add --all parameter; convert
all callbacks to support shared counter.
* tools/virsh.pod (event): Document it.
Signed-off-by: Eric Blake <eblake@redhat.com>
Earlier, I added 'virsh event' for lifecycle events, to get the
concept approved; this patch finishes the support for all other
events, although the user still has to register for one event
type at a time. A future patch may add an --all parameter to
make it possible to register for all events through a single
call.
* tools/virsh-domain.c (vshDomainEventWatchdogToString)
(vshDomainEventIOErrorToString, vshGraphicsPhaseToString)
(vshGraphicsAddressToString, vshDomainBlockJobStatusToString)
(vshDomainEventDiskChangeToString)
(vshDomainEventTrayChangeToString, vshEventGenericPrint)
(vshEventRTCChangePrint, vshEventWatchdogPrint)
(vshEventIOErrorPrint, vshEventGraphicsPrint)
(vshEventIOErrorReasonPrint, vshEventBlockJobPrint)
(vshEventDiskChangePrint, vshEventTrayChangePrint)
(vshEventPMChangePrint, vshEventBalloonChangePrint)
(vshEventDeviceRemovedPrint): New helper routines.
(cmdEvent): Support full array of event callbacks.
Signed-off-by: Eric Blake <eblake@redhat.com>
If user wants to grep some info from domain, e.g. disk paths:
# virsh -q domblklist win7 | awk '{print $2}'
Source
/var/lib/libvirt/images/windows.qcow2
/home/zippy/work/tmp/en_windows_7_professional_x64_dvd_X15-65805.iso
while with my change:
# virsh -q domblklist win7 | awk '{print $2}'
/var/lib/libvirt/images/windows.qcow2
/home/zippy/work/tmp/en_windows_7_professional_x64_dvd_X15-65805.iso
We don't print table header in other commands, like list.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Dan Berrange suggested that using VIR_ENUM_IMPL is more compact
than open-coding switch statements, and still just as forceful
at making us remember to update lists if we add enum values
in the future. Make this change throughout virsh.
Sure enough, doing this change caught that we missed at least
VIR_STORAGE_VOL_NETDIR.
* tools/virsh-domain-monitor.c (vshDomainIOErrorToString)
(vshDomainControlStateToString, vshDomainStateToString)
(vshDomainStateReasonToString): Change switch to enum lookup.
(cmdDomControl, cmdDominfo): Update caller.
* tools/virsh-domain.c (vshDomainVcpuStateToString)
(vshDomainEventToString, vshDomainEventDetailToString): Change
switch to enum lookup.
(vshDomainBlockJobToString, vshDomainJobToString): New functions.
(cmdVcpuinfo, cmdBlockJob, cmdDomjobinfo, cmdEvent): Update
callers.
* tools/virsh-network.c (vshNetworkEventToString): Change switch
to enum lookup.
* tools/virsh-pool.c (vshStoragePoolStateToString): New function.
(cmdPoolList, cmdPoolInfo): Update callers.
* tools/virsh-volume.c (vshVolumeTypeToString): Change switch to
enum lookup.
(cmdVolInfo, cmdVolList): Update callers.
Signed-off-by: Eric Blake <eblake@redhat.com>
Add 'virsh event --list' and 'virsh event [dom] --event=name
[--loop] [--timeout]'. Borrows somewhat from event-test.c,
but defaults to a one-shot notification, and takes advantage
of the event loop integration to allow Ctrl-C to interrupt the
wait for an event. For now, this just does lifecycle events.
* tools/virsh.pod (event): Document new command.
* tools/virsh-domain.c (vshDomainEventToString)
(vshDomainEventDetailToString, vshDomEventData)
(vshEventLifecyclePrint, cmdEvent): New struct and functions.
Signed-off-by: Eric Blake <eblake@redhat.com>
