islmatt
n00b
Joined: 16 Nov 2005
Posts: 1
|
 Posted: Wed Nov 16, 2005 10:23 am Post subject: Raid5 always failing one disk on large partition |
 |
|
I am setting up an AMD64 system with Raid 5 but have come up against a problem with one disk always failing during the syncing of the disks. I have used three disks in the array and have one spare one that I have swapped out for the "broken" one, and I have swapped all of them around, but one always seem to fail. While I perform more juggling around of what disks are going where I thought I'd ask to see if anyone with experience of Raid 5 knows of a specific problem that exists and why this might be failing the disk all the time. Each SATA disk is the same model, 250GB on an ASUS A8N-SLI motherboard on SATA channels 1, 2 and 3. Here is the information from my setup:
cat /proc/mdstat
| Code: | Personalities : [raid1] [raid5]
md7 : active raid5 sdc8[2] sdb8[3](F) sda8[0]
427553536 blocks level 5, 128k chunk, algorithm 3 [3/2] [U_U]
md6 : active raid5 sdc7[2] sdb7[1] sda7[0]
12128768 blocks level 5, 32k chunk, algorithm 3 [3/3] [UUU]
md5 : active raid5 sdc6[2] sdb6[1] sda6[0]
23840256 blocks level 5, 32k chunk, algorithm 3 [3/3] [UUU]
md4 : active raid5 sdc5[2] sdb5[1] sda5[0]
12128768 blocks level 5, 32k chunk, algorithm 3 [3/3] [UUU]
md2 : active raid5 sdc3[2] sdb3[1] sda3[0]
8225152 blocks level 5, 32k chunk, algorithm 3 [3/3] [UUU]
md0 : active raid1 sdb1[1] sda1[0]
104320 blocks [2/2] [UU]
unused devices: <none>
|
cat /etc/raidtab
| Code: | # /boot (RAID 1)
raiddev /dev/md0
raid-level 1
nr-raid-disks 2
chunk-size 32
persistent-superblock 1
device /dev/sda1
raid-disk 0
device /dev/sdb1
raid-disk 1
# / (RAID 5)
raiddev /dev/md2
raid-level 5
nr-raid-disks 3
chunk-size 32
persistent-superblock 1
parity-algorithm right-symmetric
device /dev/sda3
raid-disk 0
device /dev/sdb3
raid-disk 1
device /dev/sdc3
raid-disk 2
# /usr (RAID 5)
raiddev /dev/md4
raid-level 5
nr-raid-disks 3
chunk-size 32
persistent-superblock 1
parity-algorithm right-symmetric
device /dev/sda5
raid-disk 0
device /dev/sdb5
raid-disk 1
device /dev/sdc5
raid-disk 2
# /usr/local (RAID 5)
raiddev /dev/md5
raid-level 5
nr-raid-disks 3
chunk-size 32
persistent-superblock 1
parity-algorithm right-symmetric
device /dev/sda6
raid-disk 0
device /dev/sdb6
raid-disk 1
device /dev/sdc6
raid-disk 2
# /var (RAID 5)
raiddev /dev/md6
raid-level 5
nr-raid-disks 3
chunk-size 32
persistent-superblock 1
parity-algorithm right-symmetric
device /dev/sda7
raid-disk 0
device /dev/sdb7
raid-disk 1
device /dev/sdc7
raid-disk 2
# /var/www (RAID 5)
raiddev /dev/md7
raid-level 5
nr-raid-disks 3
chunk-size 128
persistent-superblock 1
parity-algorithm right-symmetric
device /dev/sda8
raid-disk 0
device /dev/sdb8
raid-disk 1
device /dev/sdc8
raid-disk 2
|
fdisk -l /dev/sda
| Code: | Disk /dev/sda: 250.0 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 104391 fd Linux raid autodetect
/dev/sda2 14 281 2152710 82 Linux swap / Solaris
/dev/sda3 282 793 4112640 fd Linux raid autodetect
/dev/sda4 794 30401 237826260 5 Extended
/dev/sda5 794 1548 6064506 fd Linux raid autodetect
/dev/sda6 1549 3032 11920198+ fd Linux raid autodetect
/dev/sda7 3033 3787 6064506 fd Linux raid autodetect
/dev/sda8 3788 30401 213776923+ fd Linux raid autodetect
|
|
|
Kernel & Hardware
