[linux-lvm] Still missing for supporting dm-thin
Spelic
spelic at shiftmail.org
Mon Jun 25 14:34:52 UTC 2012
Hello all,
thanks for your hard work in supporting dm-thin from LVM
There are still 2 important features missing that I noticed when I tried it:
1) It is not possible to backup and restore a VG config (vgcfgrestore in
particular refuses to work) if there is a dm-thin volume. This is a very
serious problem that does not allow to recover even non-thin volumes if
there is a thin volume around. Even automatic backups from
/etc/lvm/archive cannot be restored/used. This puts data at risk, please
fix this.
2) less important: it is apparently not possible to change the --zero
flag for a thin pool once created. This is a quite important flag that
should be tweakable IMHO... however if #1 is fixed, one could backup the
config, modify the flag, and restore the config to achieve that.
Thanks for your work
S.
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