[linux-lvm] Repair thin pool

[M.H. Tsai]

2016-02-06 1:28 GMT+08:00 Zdenek Kabelac <zkabelac at redhat.com>:
> But that's actually what described 'swap' is for.
>
> You 'replace/swap'  existing metadata LV with some selected LV in VG.
>
> Then you activate this LV - and you may do whatever you need to do.
> (so you have content of  _tmeta LV  accessible through your  tmp_created_LV)

I forget that we can use swapping to make _tmeta visible. The steps in
this page are correct.
http://www.spinics.net/lists/lvm/msg22629.html
The only typo in this post is that we should use thin_repair instead
of thin_restore.
http://permalink.gmane.org/gmane.linux.lvm.general/14829

> lvm2 currently doesn't support activation of 'subLVs'  as it makes
> activation of the whole tree of LVs much more complicated (clvmd support
> restrictions)
>
> So ATM we take only top-level LV lock in cluster (and yes - there is still
> unresolved bug for thin-pool/thinLV - when user may 'try' to activate
> different thin LVs from a single thin-pool on multiple nodes - so for now -
> there is just one advice - don't do that - until we provide a fix for this.

I didn't try clvm. Thanks for noticing.


Ming-Hung Tsai