[DRBD-user] xfs on drbd problems

Lars Ellenberg lars.ellenberg at linbit.com
Fri May 16 23:37:17 CEST 2008

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


On Fri, May 16, 2008 at 02:24:27PM -0700, yoyo64 wrote:
> 
> hi
> 
> We have 4 drbd devices , one is xfs , the others ext3
> Since the beginning, some problemes appeared on samba share for xfs, RO
> files and so on
> Now it begin more and more critical because some files disapear.
> When I try command setfacl, for rights purpose, it is new to have 'segment
> fault' error !
> I read on that forum that xfs is very sensitive about hardware specs.
> How can I verify (in logs) what is the origin of my problem ?


When system binaries start to throw segfaults,
I suspect your main memory is faulty. 

I suggest to first purge all caches
# echo 3 > /proc/sys/vm/drop_caches
which causes every library and system binaries to be re-read from stable
storage, and most likely to a different main memory location than it had
been before, which may just get the system usable again (because now
your binaries by chance live in a healthy area of your RAM).

then get that system down
as soon and as clean as possible,
and do a memcheck.

once you are certain that RAM is ok,
do a e2fsck and xfs_check/xfs_repair.

-- 
: Lars Ellenberg                           http://www.linbit.com :
: DRBD/HA support and consulting             sales at linbit.com :
: LINBIT Information Technologies GmbH      Tel +43-1-8178292-0  :
: Vivenotgasse 48, A-1120 Vienna/Europe     Fax +43-1-8178292-82 :
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