> > dmsetup reload backup --table "0 11720531968 error"
This one returns without error.
> > dmsetup suspend --noflush backup
>
> or even better use --noflush --nolockfs
> (if there was a mounted filesystem)
This one does not return to the command prompt. Running it through
strace shows this:
$ strace dmsetup suspend --noflush --nolockfs backup
...
munmap(0x7f9cdea45000, 4096) = 0
ioctl(3, DM_VERSION, 0x5644ae2ca0d0) = 0
ioctl(3, DM_DEV_SUSPEND
It always seems to freeze at DM_DEV_SUSPEND. This ioctl never seems to
return.
> > dmsetup resume backup
Running this anyway also freezes:
$ strace dmsetup resume backup
...
close(4) = 0
semop(720903, {{0, 1, 0}}, 1) = 0
semctl(720903, 0, GETVAL, 0x7fa5b3c28957) = 2
ioctl(3, DM_DEV_SUSPEND
> > Is this working for you ?
Looks like it's a kernel problem with DM_DEV_SUSPEND getting stuck
waiting for something? There are no messages in dmesg after running
the above commands, not even any 'hung task' warnings.
Thanks,
Adam.
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