USB drive going offline

Linux and Unix-Like Red Hat
1

Hello all,

I have a USB drive mounted on a linux RHEL 4 server which goes offline every now n then.

Here are some logs :
---------------------------------------------

[root@host ~]# lsusb
Bus 005 Device 001: ID 0000:0000
Bus 004 Device 001: ID 0000:0000
Bus 003 Device 001: ID 0000:0000
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 006: ID 0bc2:3101 Seagate RSS LLC
Bus 001 Device 002: ID 04b4:6560 Cypress Semiconductor Corp. CY7C65640 USB-2.0 "TetraHub"
Bus 001 Device 001: ID 0000:0000

Jul  4 18:40:02 host kernel: Device sde not ready.
Jul  4 18:40:02 host kernel: end_request: I/O error, dev sde, sector 12847
Jul  4 18:40:02 host kernel: EXT3-fs error (device sde1): ext3_find_entry: reading directory #2 offset 0
Jul  4 19:38:06 host kernel: Buffer I/O error on device sde, logical block 14
Jul  4 19:38:06 host kernel: Buffer I/O error on device sde, logical block 15
Jul  4 19:38:06 host kernel: Device sde not ready.
Jul  4 19:38:06 host kernel: end_request: I/O error, dev sde, sector 0
Jul  4 19:38:06 host kernel: Buffer I/O error on device sde, logical block 0

Device sde not ready.
end_request: I/O error, dev sde, sector 13711
Buffer I/O error on device sde1, logical block 1706
lost page write due to I/O error on sde1
Aborting journal on device sde1.
Device sde not ready.

Device sde not ready.
end_request: I/O error, dev sde, sector 12847
EXT3-fs error (device sde1): ext3_readdir: directory #2 contains a hole at offset 0
EXT3-fs warning (device sde1): ext3_clear_journal_err: Filesystem error recorded from previous mount: IO failure
EXT3-fs warning (device sde1): ext3_clear_journal_err: Marking fs in need of filesystem check.
EXT3 FS on sde1, internal journal
SELinux: initialized (dev sde1, type ext3), uses xattr

EXT3-fs error (device sde1) in ext3_reserve_inode_write: IO failure
EXT3-fs error (device sde1) in ext3_dirty_inode: IO failure
EXT3-fs error (device sde1): ext3_journal_start_sb: Detected aborted journal

end_request: I/O error, dev sde, sector 12847
EXT3-fs error (device sde1): ext3_readdir: directory #2 contains a hole at offset 0

EXT3-fs error (device sde1): ext3_get_inode_loc: unable to read inode block - inode=4210689, block=8421378
Aborting journal on device sde1.

[root@host ~]# sfdisk -l /dev/sde

Disk /dev/sde: 121601 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0

   Device Boot Start     End   #cyls    #blocks   Id  System
/dev/sde1          0+ 121600  121601- 976760001   83  Linux
/dev/sde2          0       -       0          0    0  Empty
/dev/sde3          0       -       0          0    0  Empty
/dev/sde4          0       -       0          0    0  Empty
[root@host ~]# fdisk -l /dev/sde

Disk /dev/sde: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/sde1               1      121601   976760001   83  Linux
[root@host ~]# fdisk -l /dev/sde1

Disk /dev/sde1: 1000.2 GB, 1000202241024 bytes
64 heads, 32 sectors/track, 953867 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes

     Device Boot      Start         End      Blocks   Id  System
/dev/sde1p1               1      953867   976759792   83  Linux
[root@host ~]#

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I haven't tried anything yet. But planning to run a fsck and dd on this drive.

Will post the results.

Thanks

Sunny

---------- Post updated at 10:03 AM ---------- Previous update was at 10:00 AM ----------

dd did not reveal any errors

# nohup dd if=/dev/sde of=/dev/null bs=1024k &

953869+1 records in
953869+1 records out

2

Tried fsck.....

What does the output mean

# fsck -pv /dev/sde1
fsck 1.35 (28-Feb-2004)
/dev/sde1: recovering journal
/dev/sde1 contains a file system with errors, check forced.
 1297672 inodes used (1%)
    9594 non-contiguous inodes (0.7%)
         # of inodes with ind/dind/tind blocks: 86372/1832/4
68330390 blocks used (27%)
       0 bad blocks
       8 large files

 1217621 regular files
   79707 directories
       0 character device files
       0 block device files
       0 fifos
       1 link
     335 symbolic links (334 fast symbolic links)
       0 sockets

---------- Post updated at 03:40 PM ---------- Previous update was at 03:37 PM ----------

syslog:

Jul  7 01:12:23 host kernel: kjournald starting.  Commit interval 5 seconds
Jul  7 01:12:23 host kernel: EXT3 FS on sde1, internal journal
Jul  7 01:12:23 host kernel: EXT3-fs: mounted filesystem with ordered data mode.
Jul  7 01:12:23 host kernel: SELinux: initialized (dev sde1, type ext3), uses xattr