Reimplement xfs_info by returning a hash table of values (rather than
a limited struct), and by writing it in OCaml with PCRE which makes
string parsing a lot simpler. This will now flexibly return all the
fields from the underlying xfs_info command, even (hopefully) future
fields.
Note the field values are returned as strings, because the actual
fields in xfs_info output are fairly random and free-form. There is a
trade off here between returning as much information as we can, and
requiring the user to do a bit of (simple) field parsing.
Fixes: https://issues.redhat.com/browse/RHEL-143673
Dan mentioned that there is a special machine type ("none") we can use
when querying for KVM. It has no CPU, memory, etc and does not run,
but you can still enable KVM for it.
Note we have to remove the -cpu parameter, otherwise qemu prints this
error:
qemu-kvm: apic-id property was not initialized properly
Updates: commit 5da8102f5f
Suggested-by: Daniel P. Berrangé <berrange@redhat.com>
/usr/bin/ld: /tmp/ccvSGq6E.ltrans7.ltrans.o:(.data.rel.ro+0x1f8): undefined reference to `optgroup_selinuxrelabel_available'
The reason is that we didn't include optgroup_selinuxrelabel_available
on the fallback / no libselinux code path.
Reported-by: David Runge
Thanks: Toolybird
Fixes: https://github.com/libguestfs/libguestfs/issues/290
Fixes: commit ed40333a23
Add a new optional boolean argument 'keepdirlink' to tar_in that passes
--keep-directory-symlink to tar. This preserves existing symlinks to
directories when extracting, which is important for usrmerge systems
where /lib is a symlink to /usr/lib.
Without this option, extracting a tarball containing lib/modules/...
to / would replace the /lib symlink with a real directory, breaking
the system.
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
When checking for QMP properties, we run a qemu command and interact
with the QMP console. However we also start the guest running (there
is no actual guest in this situation). This occasionally causes this
line to be printed:
libguestfs: generic_qmp_test: 3: {"timestamp": {"seconds": 1768823946, "microseconds": 898287}, "event": "GUEST_PANICKED", "data": {"action": "poweroff", "info": {"core": 0, "psw-addr": 0, "reason": "disabled-wait", "psw-mask": 562956395872256, "type": "s390"}}}\r\n
which confuses our parser.
As there is no reason to start the non-existent guest, add the -S
option which causes qemu to start up in a paused state.
For some reason this only happens on s390x but I think it could happen
on all architectures, so it may be a timing issue or something
particular about s390x firmware.
Commit 669eda1e24 ("lib/launch-direct.c: Simplify test for KVM, remove
qemu caching") made it so that failure of generic_qmp_test() will
cause launch to fail. However we still used debug messages to print
the error, so unless you have debugging enabled you wouldn't see any
error message if this function fails.
Updates: commit 669eda1e24
Devices associated with btrfs volumes are not reverse-translated
(e.g., btrfsvol:/dev/sdX to sdY).
Forward translation occurs, creating a path mismatch. This causes
errors in subsequent btrfs commands.
Thanks: Arye Yurkovsky
lvm returns logical volumes even if they're broken, for instance when a
physical volume is missing in their volume group.
In such cases, stat would fail to resolve the provided path.
Handle such cases by skipping such failures when finding the matching
lvm device.
In C23, strchr or strrchr on a const parameter now returns a const
pointer. We saw this error:
destpaths.c: In function ‘complete_dest_paths_generator’:
destpaths.c:165:9: error: assignment discards ‘const’ qualifier from pointer target type [-Werror=discarded-qualifiers]
165 | p = strrchr (text, '/');
| ^
