[Lustre-discuss] lustre remounting after e2fsck
Samuel Aparicio
saparicio at bccrc.ca
Fri Jul 6 10:58:49 PDT 2012
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
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