<br><br>I have a backup server configured with the following 3 RAID arrays<br><br>//backup2> /c0 show<br><br>Unit UnitType Status %RCmpl %V/I/M Stripe Size(GB) Cache AVrfy<br>------------------------------------------------------------------------------<br>
u0 RAID-1 OK - - - 74.4951 OFF OFF<br>u1 RAID-5 OK - - 64K 3259.56 OFF OFF<br>u2 RAID-5 OK - - 64K 5122.17 OFF OFF<br>
<br><br>The first array (RAID1) /co/u0 contains 2 x 500GB discs which hold the operating system.<br><br>The second array (RAID5) /c0/u1 contains 8 x 500GB discs and provides just over 3GB worth of space to hold my backup files.<br>
This is mounted on /dev/sdb2 as /disk01<br><br>The third array (RAID5) /co/u2 contains 12 x 500GB discs and provides just over 5GB worth of space to hold my backup files.<br>This is mounted on /dev/sdb1 as /disk02<br><br>
The third array co/u2 was having some problems after one of it's discs failed.<br>This first showed up by the partition it was mounted on /disk01 showing I/O errors.<br><br>So I rebooted it and went to the RAID controller (alt-3) which showed me the corrupt disc.<br>
I replaced the corrupt disc and told the controller to rebuild the array which it did. I then verified<br>it via the controller.<br><br>However, when I boot the system up it didnt mount /disk02.<br>So I manually mounted it but it didnt show any data and it didnt let me write to it.<br>
Then I did a fsck on it and it said the following<br><br># fsck /dev/sdb1<br>fsck 1.39 (29-May-2006)<br>e2fsck 1.39 (29-May-2006)<br>The filesystem size (according to the superblock) is 854473244 blocks<br>The physical size of the device is 317602332 blocks<br>
Either the superblock or the partition table is likely to be corrupt!<br>Abort<y>?<br><br><br>I'm not sure what has happened here and why the array hasnt been recovered.<br>Does anyone have any suggestions?<br><br>
I'm not too bothered about losing the data from /disk02 as I have it backed up elsewhere, but I'd rather <br>recover everything to its previous state than have to reinstall the entire server.<br><br><br>Thanks,<br>
<br>Oliver<br><br><br>below is the output from the RAID controller using the tw_cli linux client from 3ware.<br>Note that slots 2 and 11 have always been empty.<br><br><br># /opt/3ware/CLI/tw_cli<br>//backup2> /c0 show<br>
<br>Unit UnitType Status %RCmpl %V/I/M Stripe Size(GB) Cache AVrfy<br>------------------------------------------------------------------------------<br>u0 RAID-1 OK - - - 74.4951 OFF OFF<br>
u1 RAID-5 OK - - 64K 3259.56 OFF OFF<br>u2 RAID-5 OK - - 64K 5122.17 OFF OFF<br><br>Port Status Unit Size Blocks Serial<br>
---------------------------------------------------------------<br>p0 OK u0 74.53 GB 156301488 6QZ3D8E8<br>p1 OK u0 74.53 GB 156301488 6QZ3D04Z<br>p2 NOT-PRESENT - - - -<br>
p3 OK u1 465.76 GB 976773168 9QM0G1SF<br>p4 OK u1 465.76 GB 976773168 9QM0L1N3<br>p5 OK u1 465.76 GB 976773168 9QM0EEP9<br>p6 OK u1 465.76 GB 976773168 9QM0HXMH<br>
p7 OK u1 465.76 GB 976773168 9QM0GZ6H<br>p8 OK u1 465.76 GB 976773168 9QM0G16T<br>p9 OK u1 465.76 GB 976773168 9QM0LK3C<br>p10 OK u1 465.76 GB 976773168 9QM0EVP7<br>
p11 NOT-PRESENT - - - -<br>p12 OK u2 465.76 GB 976773168 WD-WCASU6421435<br>p13 OK u2 465.76 GB 976773168 WD-WCASU6548401<br>p14 OK u2 465.76 GB 976773168 WD-WCASU6548327<br>
p15 OK u2 465.76 GB 976773168 WD-WCASU6421420<br>p16 OK u2 465.76 GB 976773168 WD-WCASU6421342<br>p17 OK u2 465.76 GB 976773168 WD-WCASU6519440<br>
p18 OK u2 465.76 GB 976773168 WD-WCASU6542386<br>p19 OK u2 465.76 GB 976773168 WD-WCASU6418851<br>p20 OK u2 465.76 GB 976773168 WD-WCASU6548441<br>
p21 OK u2 465.76 GB 976773168 WD-WCASU6548301<br>p22 OK u2 465.76 GB 976773168 WD-WCASU6541089<br>p23 OK u2 465.76 GB 976773168 WD-WCASU6041935<br>
<br>//backup2><br> <br><br><br><br>