https://bugzilla.redhat.com/show_bug.cgi?id=1373711
Add support and documentation for the [NO_]OVERWRITE flags for the
logical backend.
Update virsh.pod with a description of the process for usage of
the flags and building of the pool's volume group.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Rather than have the Disk code having to use PARTED to determine if
there's something on the device, let's use the virStorageBackendDeviceProbe.
and only fallback to the PARTED probing if the BLKID code isn't built in.
This will also provide a mechanism for the other current caller (File
System Backend) to utilize a PARTED parsing algorithm in the event that
BLKID isn't built in to at least see if *something* exists on the disk
before blindly trying to use. The PARTED error checking will not find
file system types, but if there is a partition table set on the device,
it will at least cause a failure.
Move virStorageBackendDiskValidLabel and virStorageBackendDiskFindLabel
to storage_backend and rename/rework the code to fit the new model.
Update the virsh.pod description to provide a more generic description
of the process since we could now use either blkid or parted to find
data on the target device.
Signed-off-by: John Ferlan <jferlan@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1363586
Commit id '27758859' introduced the "NO_OVERWRITE" flag check for
file system backends; however, the implementation, documentation,
and algorithm was inconsistent. For the "flag" description for the
API the flag was described as "Do not overwrite existing pool";
however, within the storage backend code the flag is described
as "it probes to determine if filesystem already exists on the
target device, renurning an error if exists".
The code itself was implemented using the paradigm to set up the
superblock probe by creating a filter that would cause the code
to only search for the provided format type. If that type wasn't
found, then the algorithm would return success allowing the caller
to format the device. If the format type already existed on the
device, then the code would fail indicating that the a filesystem
of the same type existed on the device.
The result is that if someone had a file system of one type on the
device, it was possible to overwrite it if a different format type
was specified in updated XML effectively trashing whatever was on
the device already.
This patch alters what NO_OVERWRITE does for a file system backend
to be more realistic and consistent with what should be expected when
the caller requests to not overwrite the data on the disk.
Rather than filter results based on the expected format type, the
code will allow success/failure be determined solely on whether the
blkid_do_probe calls finds some known format on the device. This
adjustment also allows removal of the virStoragePoolProbeResult
enum that was under utilized.
If it does find a formatted file system different errors will be
generated indicating a file system of a specific type already exists
or a file system of some other type already exists.
In the original virsh support commit id 'ddcd5674', the description
for '--no-overwrite' within the 'pool-build' command help output
has an ambiguous "of this type" included in the short description.
Compared to the longer description within the "Build a given pool."
section of the virsh.pod file it's more apparent that the meaning
of this flag would cause failure if a probe of the target already
has a filesystem.
So this patch also modifies the short description to just be the
antecedent of the 'overwrite' flag, which matches the API description.
This patch also modifies the grammar in virsh.pod for no-overwrite
as well as reworking the paragraph formats to make it easier to read.
Signed-off-by: John Ferlan <jferlan@redhat.com>
The virsh manpage lists "shutdown" and "dying" as two of the possible
domain states that could be listed in the output of the "virsh list"
command. However, a domain that is being shutdown will be listed as
"in shutdown", and the "dying" state doesn't even exist (and never
has, as far as I can tell from looking through git history - it was
shown in the original import of the virsh.pod file in 2006; there was
no VIR_DOMAIN_DYING state then, there wasn't one when those lines of
virsh.pod were tweaked in 2008, and there still isn't one
today. Apparently it was just something that sounded like a good idea
to someone at some time, but was never implemented...)
Resolves: https://bugzilla.redhat.com/1408778
This patch adds support and documentation for
a generalized hardware cache event called cache_l1d
perf event.
Signed-off-by: Nitesh Konkar <nitkon12@linux.vnet.ibm.com>
The virsh manpage lists options --uuid and --name as
mutually exclusive along option --table when actually
the option --table is mutually exclusive and can't go
with options --uuid and/or --name. This patch rewords the
virsh manpage to state the correct meaning.
Signed-off-by: Nitesh Konkar <nitkon12@linux.vnet.ibm.com>
When setting perf events, the enabled/disabled perf events are not
listed. Since we know which events were changed it's possible to
print out the values on successful set, such as :
virsh perf Domain --enable instructions --disable cache_misses
instructions : enabled
cache_misses : disabled
Created a helper to print the messages - use the vshPrintExtra to
adhere to the --quiet|-q option being set by some script. This will
cause the get code to print nothing, but will return success/failure.
Signed-off-by: Nitesh Konkar <nitkon12@linux.vnet.ibm.com>
When changing the metadata via virDomainSetMetadata, we now
emit an event to notify the app of changes. This is useful
when co-ordinating different applications read/write of
custom metadata.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Add a new qualifier '--physical' to the 'vol-info' command in order to
dispaly the physical size of the volume. The size can differ from the
allocation value depending on the volume file time. In particular, qcow2
volumes will have a physical value larger than allocation. This also occurs
for sparse files, although for those the capacity is the largest size;
whereas, for qcow2 capacity is the logical size.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Finally, now that all APIs have been introduced, wire them up to virt-admin
and introduce daemon-log-outputs and daemon-log-filters commands.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
1ec22be5 added code that detects the maximum cpu count according to
domain capabilities. The code fell back to the old command only if the
API was not supported. If the API fails for other reasons the command
would fail. There's no point in not trying the old API in such case.
https://bugzilla.redhat.com/show_bug.cgi?id=1402690
Some arguments in vshErrorHandler, vshReadlineCompletion and
cmdSelfTest functions are not used. Mark them as such.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
If the 'nleases < 0' on return, then the subsequent call to
findLeaseInJSON will not produce the expected results (passed
in as a size_t, but nleases is a ssize_t). So check if the
returned value < 0 and if so, goto cleanup.
Found by Coverity as a NEGATIVE_RETURNS event
With current perf framework, this patch adds support and documentation
for the branch_instructions perf event.
Signed-off-by: Nitesh Konkar <nitkon12@linux.vnet.ibm.com>
So far the NSS module looks up only hostnames as provided by
guests themselves. However, there are some cases where this is
not enough: e.g. when there's a fresh new guest being installed
(with some generic hostname) say from a live ISO image; or some
(older) systems don't advertise their hostname in DHCP
transactions at all.
In cases like that it would be helpful if we translate domain
name as seen by libvirt too so that users can:
# virsh start $dom && ssh $dom
In order to achieve that new libvirt-guest module is introduced,
while older libvirt module maintains its current behaviour (that
is translating guest provided names into IP addresses).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The part of the code that iterates over an array of JSON values
is going to be re-used. Instead of copying it over, move it to a
separate function.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The part of the code that appends found IP address into a list is
going to be re-used. Instead of copying it over, move it to a
separate function.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The name of the exported functions for an NSS module is quite
fixed, it is derived from the module name:
_nss_$module_$function
Since we will create another NSS module with very similar
implementation we might as well generate the function names at
the compile time.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
We have couple of functions that operate over NULL terminated
lits of strings. However, our naming sucks:
virStringJoin
virStringFreeList
virStringFreeListCount
virStringArrayHasString
virStringGetFirstWithPrefix
We can do better:
virStringListJoin
virStringListFree
virStringListFreeCount
virStringListHasString
virStringListGetFirstWithPrefix
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
It is already discussed in "[RFC] daemon: remove hardcode dep on libvirt-guests" [1].
Mgmt can use means to save/restore domains on system shutdown/boot other than
libvirt-guests.service. Thus we need to specify appropriate ordering dependency between
libvirtd, domains and save/restore service. This patch takes approach suggested
in RFC and introduces a systemd target, so that ordering can be built next way:
libvirtd -> domain -> virt-guest-shutdown.target -> save-restore.service.
This way domains are decoupled from specific shutdown service via intermediate
target.
[1] https://www.redhat.com/archives/libvir-list/2016-September/msg01353.html
Commit v1.3.3-181-gb028e9d7c implmented support for
VIR_MIGRATE_PARAM_PERSIST_XML migration parameter, but forgot to update
virsh.
https://bugzilla.redhat.com/show_bug.cgi?id=835300
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Although there already was an effort (b620bdee) to replace vshPrint occurrences
with vshPrintExtra due to '--quiet' flag, there were still some leftovers. So
this patch fixes them, hopefully for good.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1356881
Signed-off-by: Erik Skultety <eskultet@redhat.com>
There were a few places in our virsh* code where instead of calling vshError
on failure we called vshPrint.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
First, since commit 834c5720 the error reporting within the vshErrorHandler
doesn't work because there was a lot of renaming going on (dull mechanical
renaming without much thinking about it, yep - shame on me) and so the original
env variable VIRSH_DEBUG got renamed to VSH_DEBUG which we don't support nor
document anywhere. Second, by specifying this env variable, the last libvirt
error gets reported twice despite the fact we say the error reporting should be
deferred until the command finishes, and last but not least the vintage code's
logic is a bit 'odd', since the error would get reported iff the env variable
is set, even if the value should be equal to our DEFAULT value in which case it
doesn't make sense that we behave differently when an env variable is set to
some value and when there's no env variable at all but we use the same value
automatically as default.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Unlike the other error messages in vshInitDebug, this one relied on a hardcoded
name of a variable instead of using the prefix of the tool calling the init
routine.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1393854
Signed-off-by: Erik Skultety <eskultet@redhat.com>
After 06a7b1ff4 the @&opts_need_arg is not used anywhere. Well,
it is set but never read:
vsh.c: In function 'vshReadlineParse':
vsh.c:2658:14: warning: variable 'opts_need_arg' set but not used [-Wunused-but-set-variable]
uint64_t opts_need_arg, opts_seen;
^~~~~~~~~~~~~
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Commit id 'dcfdf341' passes 'opts_need_arg' and 'opts_seen' to
vshCmddefGetData, but that seems to be incorrect as those values
are not initialized properly (something at least one compiler found).
Instead the static 'const_opts_need_arg' and 'const_opts_seen' values
should be passed.
By passing unitialized values leads to not finding possible options
for simpler commands (domfsfreeze for example), where if you're in
a virsh shell using command line completion - you'll get a list of
files in your current directory instead of two options --domain and
--mountpoint (as would happen with this patch applied.
Correcting the error reporting method by using VSH_REQUIRE_OPTION
instead of virReportError
Signed-off-by: Kothapally Madhu Pavan <kmp@linux.vnet.ibm.com>
The 'on_shutdown' was the name in Xen, there was never such option in
libvirt's domain XML.
Reported-by: Ruben Kerkhof <ruben@rubenkerkhof.com>
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Since we're using autoconf to substitute the right value in
Makefile.am now, we can use a less generic name without running
into circular dependencies.
Adding $(prefix) in Makefile.am, as we were doing, means that
it would be prepended even when using --with-ws-plugindir,
which is something we don't want to happen.
Instead, we add it beforehand but take care that it doesn't
get expanded until make is called.
https://bugzilla.redhat.com/show_bug.cgi?id=1349898
Add the duration parameters to the virsh input/output for blkdeviotune
command and describe them in the pod file.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Rework the repetitive lines to add iotune values into easier to read macros.
One to handle the SCALED values and one to handle the non scaled values.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Added description for new vcpu.<num>.halted statistics value.
While there, also added a description for vcpu.<num>.wait and
clarified the units displayed for time and wait.
Signed-off-by: Viktor Mihajlovski <mihajlov@linux.vnet.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.vnet.ibm.com>
It is stated in the manual already, so let's mention the same thing in
the description to avoid causing problems.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
If the VM is offline virsh attempted to at least report the pinning
information for the VM. This would not work properly now that the vcpus
can be sparse. Fix it by getting the vcpu states from the XML.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1375920
The fallback code used if virDomainGetVcpusFlags is not supported used
wrong XPath queries and basically did not work at all. Fix them to point
to the <domain> <vcpu> element instead of <vcpus> which was not present
until lately.
The Requires relationship is very strong, in that it prevents
a unit from running unless all the units it Requires are
running as well.
This turns out to be a problem because we want to be able to
restart libvirtd at any time without having libvirt-guests
suspend or shutdown running guests.
Turn the Requires relationship into a Wants relationship:
this way starting libvirt-guests will cause systemd to (attempt
to) start libvirtd as well, but stopping or restarting libvirtd
will not alter libvirt-guests' running state.
1. Move the declaration of const vshCmdDef *help - it should be at the
top of the "if" rather than in the middle.
2. Change a comparison from && to || - without doing so we could crash
on commands like 'virsh list' which would allow completion of some
non -- option based on whatever was found in the current working
directory and then as soon as that was completed, the next <tab>
would crash since "opt" would be returned as NULL, but the check
was dereferencing "&& opt->type"
3. Before dereferencing opt->completer, be sure opt isn't NULL.
With newer versions of libvirt Domain-0 is again visible in the list of
running guests but it should not be considered as a guest for shutdown
or suspend.
Signed-off-by Stefan Bader <stefan.bader@canonical.com>
The list file expects all guest UUIDs on the same line as the URI
which the guests run on. This does not happen when the list is
echo'ed in quotes. When stripping the quotes, newlines get transformed
into spaces. Without this, only the first guest on the list is actually
handled.
Based on a fix by Omar Siam <simar@gmx.net>
Bug-Ubuntu: http://bugs.launchpad.net/bugs/1591695
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
For one VM, it could had more than one graphical display.
Such as we coud add both vnc and spice display to a VM.
This patch introduces '--all' for showing all
possible graphical display of a active VM.
Signed-off-by: Chen Hanxiao <chenhanxiao@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
GCC complained that
vsh.c: In function 'vshReadlineOptionsGenerator':
vsh.c:2622:29: warning: unused variable 'opt' [-Wunused-variable]
const vshCmdOptDef *opt = &cmd->opts[list_index];
^
vsh.c: In function 'vshReadlineParse':
vsh.c:2830:44: warning: 'opt' may be used uninitialized in this function
[-Wmaybe-uninitialized]
completed_list = opt->completer(autoCompleteOpaque,
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
For compatibility reasons virDomainSetVcpus needs to add vcpus as non
hotpluggable which means that the users will not be able to unplug it
after the VM has started. Add a flag that will allow to tell the API
that the unpluggable vcpus are okay.
The NSS module shouldn't rely on custom leases database to not have
entries for leases which have expired.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1379895
Introduced by commit id '834c5720'.
During the code motion and creation of vsh.c, the function 'vshDeinit()'
in the (new) vsh.c was altered from whence it came in virsh.c such that
calling 'vshReadlineDeinit(ctl)' was conditional on "ctl->imode".
This causes a problem for the interactive running if the "quit" and "exit"
commands are used because 'cmdQuit' will clear ctl->imode, thus when the
interactive loop in main() of virsh.c exits because ctl->mode is clear and
virshDeinit is called which calls vshDeinit, the history file is now not
written. Conversely, if one had exited the interactive loop via pressing
<ctrl>D the file would be created because loop control is broken on EOF
and ctl->imode is not set to false.
This patch will remove the conditional call to vshReadlineDeinit and
restore the former behaviour.
Commit 6c504d6a added a note to the virsh man page about the
deprecation of 'cap' and 'weight' settings for the credit
scheduler. To this day, the default scheduler in Xen is credit
and it supports setting 'cap' and 'weight'. Remove the deprecation
notice from the note on the Xen credit scheduler.
Reported-by: Volo M. <vm@vovs.net>
Some CPU drivers (such as arm) do not provide list of CPUs libvirt
supports and just pass any CPU model from domain XML directly to QEMU.
Such driver need to return models == NULL and success from cpuGetModels.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Change the logic in a way, so that VSH_CMD_FLAG_ALIAS behaves similarly to
how VSH_OT_ALIAS for command options, i.e. there is no need for code duplication
for the alias and the aliased command structures. Along with that change,
switch any existing VSH_CMD_FLAG_ALIAS occurrences to this new format. Also,
since this patch introduces a new command structure element, adjust the
virsh-self-test test to make sure we won't ever miss to specify the '.alias'
member for an aliased command because doing that would lead to an internal
error.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
The command is deprecated due to being grammatically incorrect, but for
backwards compatibility reasons cannot be removed. However, we should not
document such commands.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Recent changes extracted the command internals validation routine from
vshCmddefOptParse method which now just calls vshCmddefOptFill. Therefore, make
vshCmddefOptFill the new vshCmddefOptParse and drop the unnecessary name.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Originally introduced by commit 2432521e which correctly split
vshCmddefOptParse into command's options validation and options parsing.
However, command's 'internals' are not tied solely to .options, rather it
should be about the overall structure, therefore the validation should be
extracted from vshCmddefOptParse and performed only within our test suite, i.e.
in vshSelfTest.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
If the initial check is true the function immediately returns so there's no
need to enclose the code following the check within an 'else' block.
Also, by removing the 'else' block, the declarations need to be moved to
beginning of the function block to conform with our guidelines.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Since it's used on a single place only, it can easily be replaced by the right
side of the original assignment.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
The intention is to move vshCmddefCheckInternals out of vshCmddefOptParse to
our test suite. First step to do that is to enforce checking for an existing
help string (that also means it's non-empty) in a command because a command
without a help is not much of a use.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
virsh maxvcpus --type kvm output is useless on PPC. Also, in
commit e6806d79 we documented not rely on virConnectGetMaxVcpus
output. Fix the maxvcpus to use virConnectGetDomainCapabilities
now to make it useful. The call is made to use the default emulator
binary and to check for the host machine and arch which is what the
command intends to show anyway.
Signed-off-by: Shivaprasad G Bhat <sbhat@linux.vnet.ibm.com>
Just like we are running 'virsh self-test' from within our test
suite, we should run 'virt-admin self-test' too.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This command should be exposed to other shells of ours.
They are gonna need it as soon as we want to test them too.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
When using
virsh net-event non-existing-net
the error message says that 'either --list or event type is required'
This is misleading as 'virsh net-event $valid-event-type' is not going
to work either. What is expected is 'virsh net-event --event
$valid-event-type'
This commit fixes the string in pool-event, nodedev-event, event, and
net-event.
This patch is to delete the extra wrap "\n" after failed vol-resize
error for both "Failed to change size of volume to" and "Failed to change
size of volume by". For error with wrap, there will be an extra wrap
between two errors, such as:
(1)# virsh vol-resize --pool default --vol vol-test 5M
error: Failed to change size of volume 'vol-test' to 5M
error: invalid argument: Can't shrink capacity below current capacity unless shrink flag explicitly specified
(2)# virsh vol-resize /var/lib/libvirt/images/volds --shrink --delta 10M
error: Failed to change size of volume 'volds' by 10M
error: invalid argument: can't shrink capacity below existing allocation
Unfortunately, commit a8962f70 only fixed first half of the reported issue of
virt-admin outputting negative values where unsigned int is expected by
BZ below, so this commit represents the other missing half of the fix.
resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1356769
Signed-off-by: Erik Skultety <eskultet@redhat.com>
This patch changes the signature of vshCompleters, allowing to pass along
some data that we might want to along with the completers; for example,
we might want to pass the autocomplete vshControl along with the
completer, in case the completer requires a connection to libvirtd.
Signed-off-by: Nishith Shah <nishithshah.2211@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Having After=libvirtd.service merely ensures that, if both
services are asked to start, libvirtd.service will start
first.
What we really want is for libvirtd.service to be started
whenever libvirt-guests.service is asked to start. Adding a
Requires= relationship guarantees that will happen.
We use a separate line for each After= relationship in other
unit files: do the same here for consistency's sake, and also
to make future changes nicer to diff
libvirt-guests.service does both suspend *and* resume guests,
depending on whether it's being started or stopped: the
description should reflect this, to avoid confusing messages
during startup.
Replace "active" with "running" (to match virsh list's output)
and don't capitalize libvirt.
Call option completers if argument completion is requested using the
corresponding option completer, if it is defined.
Signed-off-by: Nishith Shah <nishithshah.2211@gmail.com>
With current perf framework, this patch adds support and documentation
for more perf events, including cache misses, cache references, cpu cycles,
and instructions.
Signed-off-by: Qiaowei Ren <qiaowei.ren@intel.com>
When we wanted to break huge and unmaintainable virsh into
smaller files first thing we did was to just move funcs into
virsh-.c files and then #include them from virsh. Having it done
this way we also needed to have them listed under EXTRA_DIST.
However, things got changed since then and now all the virsh-*.c
files are proper source files. Therefore they are listed under
virsh_SOURCES too. But for some reason we forgot to remove them
from EXTRA_DIST.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
