Sure, but initially I wanted to see what is going on overall so I let it
pop up.
Started a debugging another session today.
First I confirmed with
(gdb) catch syscall exit exit_group
That this is the "normal" exit along the error message we knew:
migrate_set_state(&mis->state, MIGRATION_STATUS_ACTIVE,
MIGRATION_STATUS_FAILED);
error_report("load of migration failed: %s", strerror(-ret));
qemu_fclose(mis->from_src_file);
exit(EXIT_FAILURE);
I found that already the retval of qemu_loadvm_state it -5.
Every thing else afterwards is cleanup.
Inside qemu_loadvm_state the first 2/3 pass and then that ret=-5 is from
"ret = qemu_file_get_error(f);".
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https://bugs.launchpad.net/bugs/1711602
Title:
--copy-storage-all failing with qemu 2.10
Status in QEMU:
New
Status in libvirt package in Ubuntu:
Confirmed
Status in qemu package in Ubuntu:
Confirmed
Bug description:
We fixed an issue around disk locking already in regard to qemu-nbd
[1], but there still seem to be issues.
$ virsh migrate --live --copy-storage-all kvmguest-artful-normal
qemu+ssh://10.22.69.196/system
error: internal error: qemu unexpectedly closed the monitor:
2017-08-18T12:10:29.800397Z qemu-system-x86_64: -chardev pty,id=charserial0:
char device redirected to /dev/pts/0 (label charserial0)
2017-08-18T12:10:48.545776Z qemu-system-x86_64: load of migration failed:
Input/output error
Source libvirt log for the guest:
2017-08-18 12:09:08.251+0000: initiating migration
2017-08-18T12:09:08.809023Z qemu-system-x86_64: Unable to read from socket:
Connection reset by peer
2017-08-18T12:09:08.809481Z qemu-system-x86_64: Unable to read from socket:
Connection reset by peer
Target libvirt log for the guest:
2017-08-18T12:09:08.730911Z qemu-system-x86_64: load of migration failed:
Input/output error
2017-08-18 12:09:09.010+0000: shutting down, reason=crashed
Given the timing it seems that the actual copy now works (it is busy ~10
seconds on my environment which would be the copy).
Also we don't see the old errors we saw before, but afterwards on the actual
take-over it fails.
Dmesg has no related denials as often apparmor is in the mix.
Need to check libvirt logs of source [2] and target [3] in Detail.
[1]: https://lists.gnu.org/archive/html/qemu-devel/2017-08/msg02200.html
[2]: http://paste.ubuntu.com/25339356/
[3]: http://paste.ubuntu.com/25339358/
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