[linux-lvm] blkid_wiping breaks snapshots (was: lvm2 2.02.105 breaks snapshots)
Christian Hesse
list at eworm.de
Fri Feb 7 23:55:50 UTC 2014
Christian Hesse <list at eworm.de> on Sat, 2014/02/08 00:36:
> Hello everybody,
>
> I think I nailed it down with git bisect. My first bad commit is:
>
> 75628f341ad38b68aae33eae0b5700be2a6e5769
> configure: enable blkid_wiping by default if the blkid library is present
>
> Looks like this wipes data that is still needed... Building a package with
> '--disable-blkid_wipe' now to verify on another system.
Uh, this only helps part of...
I changed my test setup and used writable snapshots. After that I got:
WARNING: DM_snapshot_cow signature detected on /dev/cvg/snap-home at
offset 0. Wipe it? [y/n]
(see https://bbs.archlinux.org/viewtopic.php?id=176504 for another report)
Looks like disabling blkid_wiping fixes this. My snapshot corruption still
occurs though. :-/
Bad thing about it is that the corruption does not occur reliable when doing
simple tests in 'git bisect'... Out of ideas for now - Will go to bed now.
--
main(a){char*c=/* Schoene Gruesse */"B?IJj;MEH"
"CX:;",b;for(a/* Chris get my mail address: */=0;b=c[a++];)
putchar(b-1/(/* gcc -o sig sig.c && ./sig */b/42*2-3)*42);}
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