Hi, I'm running a two-nodes GFS cluster which hosts web sites. The GFS partition is over a Iscsi device and by now, i'm using manual fencing. Today, I got 5 httpd process on both nodes which got stuck in IO blocking state. I suspected a GFS filesystem corruption but I haven't got any output from the kernel. I ran a fsck two days ago after a power chute. Here's the wait state of the process. (idem for the other node) # ps -o pid,tt,user,fname,wchan -C apache PID TT USER COMMAND WCHAN 4426 ? root apache - 14970 ? www-data apache glock_wait_internal 15103 ? www-data apache glock_wait_internal 16780 ? www-data apache glock_wait_internal 16959 ? www-data apache glock_wait_internal 14936 ? www-data apache finish_stop 12859 ? www-data apache - 13005 ? www-data apache - 13311 ? www-data apache semtimedop 13390 ? www-data apache semtimedop How can I debug further this problem ? And how can I bring back home my httpd processes without a reboot ? Many thanks for your help. Regards, Sébastien DIDIER -- Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
