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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