Hi list,
I'm trying to migrate a few qemu virtual machines between two 1G
ethernet connected hosts, with local storage only. I got endless "error:
operation failed: migration of disk vda failed: Input/output error"
errors and thought: something wrong with settings.
However, then, suddenly: I succeeded without changing anything. And, hey:
while ! time virsh migrate --live --persistent --undefinesource
--copy-storage-all ubuntu20.04 qemu+ssh://duikboot/system; do a=$(( $a +
1 )); echo $a; done
... retried 8 times, but then: success. This smells like a race
condition, doesn't it? A bit weird is the fact that the migration seems
to succeed every time while copying from revolving disks to SSD; but the
other way around has this Input/output error.
There are some messages in /var/log/syslog, but not at the time of the
failure, and no disk errors. These disks are LVM2 volumes and they live
on raid arrays - and/so there is not a real, as in physical, I/O-error.
Source system has SSD's, target system has regular disks.
1) is this the right mailing list? I'm not 100% sure.
2) how can I research this further? Spending hours on a "while / then"
loop to try and retry live migration looks like a dull job for my poor
computers ;-)
Best regards,
Valentijn
