Hi again, > Great! That answered all my questions! Thanks a lot! > > 3.6.0-rc6-x64 ist currently running fine on 6 machines. just as a follow up i would like to share some info. The six machines mentioned above are still running fine. So are few more we tested with the new kernel. All of the servers tested so far, were rebooted immediately after the new 3.6 kernel was installed. Because of that, we decided to roll out the new kernel to all our servers (approximately 330) and have the kernel "sink in" over the next few days if the machines get rebooted. This morning we experienced some problems with the superblock being corrupted on 6 machines that had been rebooted during the night. For all of them, the following was true: a) the server was still running the old buggy 2.6.37 and had filesystem-troubles on heavy i/o (that was our problem to begin with besides the OOM) b) because of the filesystem-troubles the server had been rebooted by our hardware-support-team (sadly not necessarily using sys-requests) because the xfs-partition was unresponsive c) after being rebooted with the new 3.6 kernel, the server complained about the super-block of the xfs-partition being corrupted and was not able to mount the partition d) by running xfs_repair -L -P <device> we were able to fix the problem e) trying a remount of the fixed partition caused a quota-check which always ended in a stack-trace, after a reboot, the quota-check was fine and the partition successfully mounted Has anyone ever experienced problems like this updating from an older kernel to the current 3.6? Any Idea what could have caused the bad superblock the 3.6 kernel complained about? Is it possible that the 2.6.37 kernel left a superblock behing that could not be recognized by the 3.6 kernel? If its of any interest, i can supply the stack-traces. - volker _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs