I just recovered an OST from a disk crash with e2fsck. however when i try to remount as a lustre filesystem disk I get the following: [root at ost3 ~]# e2fsck -p -j /dev/etherd/e9.24p3 /dev/md142 lustre2-OST0009: Superblock hint for external superblock should be 0x109893. FIXED. lustre2-OST0009: clean, 948931/28615936 files, 6134439/3662831360 blocks [root at ost3 ~]# mount -t lustre /dev/md142 /mnt/ost142 mount.lustre: mount /dev/md142 at /mnt/ost142 failed: No such file or directory Is the MGS specification correct? Is the filesystem name correct? If upgrading, is the copied client log valid? (see upgrade docs) I presume I need to re-add something back here ? but what ? ? dumpe2fs reports the following: --- dumpe2fs 1.41.90.wc4 (01-Sep-2011) Filesystem volume name: lustre2-OST0009 Last mounted on: / Filesystem UUID: 2df99747-3c27-4795-abf5-c24a212edde3 Filesystem magic number: 0xEF53 Filesystem revision #: 1 (dynamic) Filesystem features: has_journal ext_attr resize_inode dir_index filetype extent flex_bg sparse_super large_file huge_file uninit_bg dir_nlink Filesystem flags: signed_directory_hash Default mount options: user_xattr acl Filesystem state: clean Errors behavior: Continue Filesystem OS type: Linux Inode count: 28615936 Block count: 3662831360 Reserved block count: 183141568 Free blocks: 3656696921 Free inodes: 27667005 First block: 0 Block size: 4096 Fragment size: 4096 Reserved GDT blocks: 149 Blocks per group: 32768 Fragments per group: 32768 Inodes per group: 256 Inode blocks per group: 16 RAID stride: 64 RAID stripe width: 320 Flex block group size: 256 Filesystem created: Wed Mar 28 11:47:49 2012 Last mount time: Fri Jul 6 10:54:07 2012 Last write time: Fri Jul 6 10:54:07 2012 Mount count: 1 Maximum mount count: 20 Last checked: Thu Jul 5 22:12:16 2012 Check interval: 0 (<none>) Lifetime writes: 63 GB Reserved blocks uid: 0 (user root) Reserved blocks gid: 0 (group root) First inode: 11 Inode size: 256 Required extra isize: 28 Desired extra isize: 28 Journal UUID: de0081bb-52a1-4970-b66c-08c13cbba8c7 Journal device: 0x109893 Default directory hash: half_md4 Directory Hash Seed: e34cbe13-406b-49e2-995d-52ff289120c8 Journal backup: inode blocks Professor Samuel Aparicio BM BCh PhD FRCPath Nan and Lorraine Robertson Chair UBC/BC Cancer Agency 675 West 10th, Vancouver V5Z 1L3, Canada. office: +1 604 675 8200 lab website http://molonc.bccrc.ca -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.lustre.org/pipermail/lustre-discuss/attachments/20120706/d5d95674/attachment-0001.html