On Tuesday 24 April 2007, Daniel de Kok wrote:
Does the kernel output show any errors?
Apr 23 20:52:39 sz-linux02 kernel: Filesystem "md10": Disabling barriers, not supported by the underlying device Apr 23 20:52:39 sz-linux02 kernel: XFS mounting filesystem md10 Apr 23 20:52:39 sz-linux02 kernel: SELinux: initialized (dev md10, type xfs), uses xattr
Not really, just the regular mounting message....
It may also be useful to know if the filesystem is on some pseudo-device like LVM or kernel RAID.
You are right! I forgot to mention that the underlying disk volume is a software mirror (raid 1) which is in sync:
mdadm --detail /dev/md10 /dev/md10: Version : 00.90.03 Creation Time : Fri Apr 20 00:48:23 2007 Raid Level : raid1 Array Size : 57062784 (54.42 GiB 58.43 GB) Device Size : 57062784 (54.42 GiB 58.43 GB) Raid Devices : 2 Total Devices : 2 Preferred Minor : 10 Persistence : Superblock is persistent
Update Time : Tue Apr 24 10:47:35 2007 State : clean Active Devices : 2 Working Devices : 2 Failed Devices : 0 Spare Devices : 0
UUID : 41c62a64:f68bee1f:ac11033d:e2be7f0c Events : 0.120
Number Major Minor RaidDevice State 0 8 4 0 active sync /dev/sda4 1 8 20 1 active sync /dev/sdb4
cat /proc/mdstat Personalities : [raid1] md10 : active raid1 sdb4[1] sda4[0] 57062784 blocks [2/2] [UU]
That's a diference to the old installation. There we had just one single disk and in the course of the new installation we added a second disk for mirroring. And just to make it clear... we have already completely deleted the images mirror and have rebuilt it from scratch with newfs.xfs etc.
Thanks, Gernot