| illuminate0 |
11-16-2011 08:39 AM |
group descriptors corrupted!
Hi all, new user here. I did my due diligence and tried to find the answer prior to posting and have tried a few things but I am still broken. My situation: I have a storage device hooked up to a Ubuntu server via iSCSI. I had it all talking nicely and up and running about 2 weeks ago. Now the device will no longer mount.
Code:
root@Backup:~# mount /backups2
mount: wrong fs type, bad option, bad superblock on /dev/sda1,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
The log..
Code:
root@Backup:~# dmesg | tail
[ 39.995906] sd 2:0:0:1: [sdb] 18556198912 512-byte logical blocks: (9.50 TB/8.64 TiB)
[ 39.998644] sd 2:0:0:1: [sdb] Write Protect is off
[ 39.998654] sd 2:0:0:1: [sdb] Mode Sense: 97 00 00 08
[ 40.000292] sd 2:0:0:1: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 40.003415] sdb: sda1
[ 40.018085] sd 2:0:0:0: [sda] Attached SCSI disk
[ 40.026415] unknown partition table
[ 40.030556] sd 2:0:0:1: [sdb] Attached SCSI disk
[ 5715.244441] EXT4-fs (sda1): ext4_check_descriptors: Checksum for group 0 failed (51749!=0)
[ 5715.244453] EXT4-fs (sda1): group descriptors corrupted!
Code:
root@Backup:/# fdisk -ul /dev/sda1
Disk /dev/sda1: 9000.7 GB, 9000731017216 bytes
255 heads, 63 sectors/track, 1094276 cylinders, total 17579552768 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/sda1 doesn't contain a valid partition table
Did some research and found this link and tried the following:
Code:
root@Backup:~# fsck /dev/sda1
fsck from util-linux-ng 2.17.2
e2fsck 1.41.11 (14-Mar-2010)
fsck.ext4: Group descriptors look bad... trying backup blocks...
fsck.ext4: Bad magic number in super-block when using the backup blocks
fsck.ext4: going back to original superblock
fsck.ext4: Device or resource busy while trying to open /dev/sda1
Filesystem mounted or opened exclusively by another program?
root@Backup:~# mke2fs -n /dev/sda1
mke2fs 1.41.11 (14-Mar-2010)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
549363712 inodes, 2197444096 blocks
109872204 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=0
67061 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
102400000, 214990848, 512000000, 550731776, 644972544, 1934917632
root@Backup:~# e2fsck -b 1605632 /dev/sda1
/dev/sda1 contains a file system with errors, check forced.
Resize inode not valid. Recreate<y>? yes
Pass 1: Checking inodes, blocks, and sizes
yyyInode 425 has a extra size (65535) which is invalid
Fix<y>? yes
Inode 426 is in use, but has dtime set. Fix<y>? yes
Inode 426 has a extra size (18635) which is invalid
Fix<y>? yes
Inode 426 has compression flag set on filesystem without compression support. Clear<y>? yes
Inode 426, i_size is 6414028916418760925, should be 0. Fix<y>? yes
Inode 426, i_blocks is 6779278794416, should be 0. Fix<y>? yes
Inode 427 is in use, but has dtime set. Fix<y>? yes
Inode 427 has a extra size (42746) which is invalid
Fix<y>? yes
Inode 428 is in use, but has dtime set. Fix<y>? yes
Inode 428 has imagic flag set. Clear<y>? yes
Inode 428 has a extra size (11520) which is invalid
Fix<y>? yes
Inode 429 is in use, but has dtime set. Fix<y>?
The above errors just went on and on.. Can anyone guide me in the next steps? I can provide more information as needed, please help! |
