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https://bugzilla.redhat.com/show_bug.cgi?id=1459091
We try to get the last element of the passed path by calling
strrch(path, '/'). However, the pointer that strrchr() returns
points at the slash, We want string that starts right after that.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1459091
Currently, we are querying for vhostuser interface name in post
parse callback. At that time interface might not yet exist.
However, it has to exist when starting domain. Therefore it makes
more sense to query its name at that point. This partially
reverts 57b5e27.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
While reworking client side of streams, I had to postpone payload
decoding so that stream holes and stream data can be
distinguished in virNetClientStreamRecvPacket. That's merely what
18944b7aea does. However, I accidentally removed one important
bit: when server sends us an empty STREAM packet (with no
payload) - meaning end of stream - st->incomingEOF flag needs to
be set. It used to be before I touched the code. After I removed
it, virNetClientStreamRecvPacket will try to fetch more data from
the stream, but it will never come.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
In 9cb891141c we've introduced some logic to clearing suggested
macvtap/macvlan ifnames. The logic consists of comparing ifname
string with strings that libvirt would generate. However, due to
a typo only VIR_NET_GENERATED_MACVTAP_PREFIX was compared. Twice.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Commit 24d4a0a1f removed the non-existent "dying" state from the list
of possible domain states given in the virsh manpage, but didn't
correct the count of states from 8 down to 7. This patch fixes that
mismatch by completely removing any reference to the exact number of
states (thus preventing a potential future mismatch), while wording
the sentence in a more readable/truthful manner.
When adding the aliased serial stub console, the structure wasn't
properly allocated (VIR_ALLOC instead of virDomainChrDefNew) which then
resulted in SIGSEGV in virDomainChrSourceIsEqual during a serial device
coldplug.
https://bugzilla.redhat.com/show_bug.cgi?id=1434278
Signed-off-by: Erik Skultety <eskultet@redhat.com>
If QEMU is new enough and we have the live updated CPU definition in
either save or migration cookie, we can use it to enforce ABI. The
original guest CPU from domain XML will be stored in private data.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Since the domain XML saved in a snapshot or saved image uses the
original guest CPU definition but we still want to enforce ABI when
restoring the domain if libvirt and QEMU are new enough, we save the
live updated CPU definition in a save cookie.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Since the domain XML send during migration uses the original guest CPU
definition but we still want the destination to enforce ABI if it is new
enough, we send the live updated CPU definition in a migration cookie.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
When persistent migration of a transient domain is requested but no
custom XML is passed to the migration API we would just let the
destination daemon make a persistent definition from the live definition
itself. This is not a problem now, but once the destination daemon
starts replacing the original CPU definition with the one from migration
cookie before starting a domain, it would need to add more ugly hacks to
reverse the operation. Let's just always send the persistent definition
in the cookie to make things a bit cleaner.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
The destination host may not be able to start a domain using the live
updated CPU definition because either libvirt or QEMU may not be new
enough. Thus we need to send the original guest CPU definition.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
When starting a domain we update the guest CPU definition to match what
QEMU actually provided (since it is allowed to add or removed some
features unless check='full' is specified). Let's store the original CPU
in domain private data so that we can use it to provide a backward
compatible domain XML.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
The following patches will add an actual content in the cookie and use
the data when restoring a domain.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
This patch implements a new save cookie object and callbacks for qemu
driver. The actual useful content will be added in the object later.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
virDomainXMLOption gains driver specific callbacks for parsing and
formatting save cookies.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
The code will be used by snapshots and domain save/restore code to store
additional data for a saved running domain. It is analogous to migration
cookies, but simple and one way only.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
The new structure encapsulates save image header and associated data
(domain XML).
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
The function is now called virQEMUSaveDataWrite and it is now doing
everything it needs to save both the save image header and domain XML to
a file. Be it a new file or an existing file in which a user wants to
change the domain XML.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
The function is supposed to update the save image header after a
successful migration to the save image file.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
This is a preparation for creating a new virQEMUSaveData structure which
will encapsulate all save image header data.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Since virQEMUSaveHeader will be followed by more than just domain XML,
the old name would be confusing as it was designed to describe the
length of all data following the save image header.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
This will be used later when a save cookie will become part of the
snapshot XML using new driver specific parser/formatter functions.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
The function will be used in paths where mismatching CPU defs are not an
error.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Allow starting the block-copy job for a persistent domain if a user
declares by using a flag that the job will not be recovered if the VM is
switched off while the job is active.
This allows to use the block-copy job with persistent VMs under the same
conditions as would apply to transient domains.
Without this patch libvirt would just report the operation of a
completed job as "unknown" instead of "incoming migration".
https://bugzilla.redhat.com/show_bug.cgi?id=1457052
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Now that we have a bit more control, let's convert our object into
a lockable object and let that magic handle the create and lock/unlock.
This commit also introduces virInterfaceObjEndAPI in order to handle the
lock unlock and object unref in one call for consumers returning a NULL
obj upon return. This removes the need for virInterfaceObj{Lock|Unlock}
external API's.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Move the consumption of @def in virInterfaceObjNew and then handle that
in the error path of virInterfaceObjListAssignDef since it's caller expects
to need to free @def when NULL is returned and so would virInterfaceObjFree.
Signed-off-by: John Ferlan <jferlan@redhat.com>
vCPU ordering information would not be updated if a vCPU emerged or
disappeared during the time libvirtd is not running. This allowed to
create invalid configuration like:
[...]
<vcpu id='56' enabled='yes' hotpluggable='yes' order='57'/>
<vcpu id='57' enabled='yes' hotpluggable='yes' order='58'/>
<vcpu id='58' enabled='yes' hotpluggable='yes'/>
Call the function that records the information on reconnect.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1451251
There's a problem with current streams after I switched them from
iohelper to thread implementation. Previously, iohelper made sure
not to exceed specified @length resulting in the pipe EOF
appearing at the exact right moment (the pipe was used to tunnel
the data from the iohelper to the daemon). Anyway, when switching
to thread I had to write the I/O code from scratch. Whilst doing
that I took an inspiration from the iohelper code, but since the
usage of pipe switched to slightly different meaning, there was
no 1:1 relationship between the codes.
Moreover, after introducing VIR_FDSTREAM_MSG_TYPE_HOLE, the
condition that should made sure we won't exceed @length was
completely wrong.
The fix is to:
a) account for holes for @length
b) cap not just data sections but holes too (if @length would be
exceeded)
For this purpose, the condition needs to be brought closer to the
code that handles holes and data sections.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Make the decision based on the usage of childBuf buffer.
This fixes the oddity in the test case introduced by commit c1c4d0d
where we would format an empty pair tag.
We need to decide whether to format <controller> as a single tag
or if it has any subelements.
Rewrite the function to use a separate buffer for subelements,
to make adding new options easier.
After some discussion on and off the linux-audit mailing list, we
should use different fields for the audit messages.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1218603
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
They do the same thing with only one difference. Let's put them
together (like we already do with virFDStreamCloseInt) so that future
changes don't miss one of the implementations. Also to clean up the
code.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
In 4f0aeed I've expanded the list of arguments for
virDomainDefCheckABIStability() but I forgot to fix
bhyveargv2xmltest.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The memset() was resetting only 30 bytes in the array (size of the
array), but it is array of pointers. Since it is a static array,
let's just reset it by its size.
Found by gcc-7.1:
testutils.c: In function 'virTestRun':
testutils.c:243:13: error: 'memset' used with length equal to number
of elements without multiplication by element size [-Werror=memset-elt-size]
memset(testAllocStack, 0, ARRAY_CARDINALITY(testAllocStack));
^~~~~~
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1450349
Problem is, qemu fails to load guest memory image if these
attribute change on migration/restore from an image.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
While checking for ABI stability, drivers might pose additional
checks that are not valid for general case. For instance, qemu
driver might check some memory backing attributes because of how
qemu works. But those attributes may work well in other drivers.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
It was only ever used in node_device_hal.c which really never used it
anyway since the NODE_DEV_UDI was never referenced. Remove free_udi()
and @privData as well as the references to obj->privateData & obj->privateFree.
Signed-off-by: John Ferlan <jferlan@redhat.com>
In preparation for privatizing the virNodeDeviceObj - create an accessor
for the @def field and then use it for various callers.
Signed-off-by: John Ferlan <jferlan@redhat.com>
