[Lustre-discuss] lfs check servers and lbug problem

[Lex]

Hi there

I have a problem with my lustre system,

After using: *

lctl --device 18 conf_param lustre-OST000d.osc.active=0

*on MDS to permanently deactivate OST, i have a trouble with lfs and lbug on
lustre client. In a newly mount lustre client, and when i used lfs to check:


*lfs check servers

*lfs was hang and lbug kept dumping on my lustre client.
I still could access my data in lustre client, but when i executed "*df -h*"
command, it was hang with "*kernel panic - not syncing"* report, it's really
bad, i had to restart my server manually.

Although at the same time, every other clients ( mounted client ) worked
well, but i still really worry about my data. I don't know whether this bug
is harmful with my data or not.

This problem is exactly like this
bug<https://bugzilla.lustre.org/show_bug.cgi?id=18329>with lfs ( i
found it by googling around ) .

Although the status of this bug is "resolved" but i'm currently being in
trouble with it, with all the same symptoms.

I also found this
post<http://lists.lustre.org/pipermail/lustre-discuss/2009-September/011657.html>from
Andreas that mentioned a patch of this bug but i couldn't find
anything.

I'm using Lustre 1.8 and CentOS 5.5

Could anyone give me some advice in this situation ? Is there a way to fix
this bug ?

Many thanks
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