Hi Gary,<div><br></div><div> Just on my way out, but sounds like the classic two drives have actually failed, as sysresccd isn't recognising sde2.</div><div><br></div><div> Either : you've physically removed (or the bios is no longer seeing) the dead disk (are you sure it's the dead one you've removed?) and therefore there's a problem with one of the remaining disks as well, OR two of the five disks are dead, in which case, it's data recovery uk time...</div>
<div><br></div><div> Remember, if you remove disk b from a 5 disk system, disk c becomes disk b, disk d becomes c etc.</div><div><br></div><div> If you have removed the "dead" disk, try putting it back so you have abcde (check with fdisk -l /dev/sda /dev/sdb ...) and try to assemble the array. if it assembles degraded, you probably have removed the wrong disk.</div>
<div><br></div><div> If not, paste the output of fdisk -l /dev/sda /dev/sdb /dev/sdc /dev/sdd /dev/sde and perhaps people here might have enough info to spot the problem.</div><div><br></div><div>--</div><div>Martyn<br>
<br>
<div class="gmail_quote">On 20 May 2010 11:15, Gary Stainburn <span dir="ltr"><<a href="mailto:gary.stainburn@ringways.co.uk">gary.stainburn@ringways.co.uk</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div class="im">On Thursday 20 May 2010 10:11:35 Gary Stainburn wrote:<br>
> Number Major Minor RaidDevice State<br>
> 0 0 0 0 removed<br>
> 1 0 0 1 removed<br>
> 2 0 0 2 removed<br>
> 3 8 34 3 active sync /dev/sdc2<br>
> 4 8 50 4 active sync /dev/sdd2<br>
> root@sysresccd /root %<br>
<br>
</div>I'm trying to assemble the array as much as possible, but I can't because it<br>
complains about missing super blocks. Anyone got suggestions (/dev/sdb2 is<br>
on the dead drive)<br>
<br>
root@sysresccd /root %<br>
mdadm --assemble /dev/md2 /dev/sda2 /dev/sdb2 /dev/sdc2 /dev/sdd2 /dev/sde2<br>
mdadm: no RAID superblock on /dev/sdb2<br>
mdadm: /dev/sdb2 has no superblock - assembly aborted<br>
root@sysresccd /root %<br>
mdadm --assemble /dev/md2 /dev/sda2 /dev/sdc2 /dev/sdd2 /dev/sde2<br>
mdadm: cannot open device /dev/sde2: No such file or directory<br>
mdadm: /dev/sde2 has no superblock - assembly aborted<br>
root@sysresccd /root % mdadm --assemble /dev/md2 /dev/sda2 /dev/sdc2 /dev/sdd2<br>
mdadm: /dev/md2 assembled from 2 drives - not enough to start the array.<br>
root@sysresccd /root % mdadm --manage --run /dev/md2<br>
mdadm: failed to run array /dev/md2: Input/output error<br>
<div><div></div><div class="h5">root@sysresccd /root % mdadm --detail /dev/md2<br>
/dev/md2:<br>
Version : 0.90<br>
Creation Time : Fri Aug 29 12:29:18 2008<br>
Raid Level : raid5<br>
Used Dev Size : 483492096 (461.09 GiB 495.10 GB)<br>
Raid Devices : 5<br>
Total Devices : 2<br>
Preferred Minor : 2<br>
Persistence : Superblock is persistent<br>
<br>
Update Time : Thu May 13 20:27:51 2010<br>
State : active, degraded, Not Started<br>
Active Devices : 2<br>
Working Devices : 2<br>
Failed Devices : 0<br>
Spare Devices : 0<br>
<br>
Layout : left-symmetric<br>
Chunk Size : 256K<br>
<br>
UUID : 549f851d:f698831d:8e1f38fa:6d8d3a6f<br>
Events : 0.553056<br>
<br>
Number Major Minor RaidDevice State<br>
0 0 0 0 removed<br>
1 0 0 1 removed<br>
2 0 0 2 removed<br>
3 8 34 3 active sync /dev/sdc2<br>
4 8 50 4 active sync /dev/sdd2<br>
</div></div>root@sysresccd /root % mdadm --manage --stop /dev/md2<br>
mdadm: stopped /dev/md2<br>
root@sysresccd /root % mdadm --assemble /dev/md2 /dev/sda2<br>
mdadm: /dev/md2 assembled from 1 drive - not enough to start the array.<br>
root@sysresccd /root % mdadm --manage --run /dev/md2<br>
mdadm: failed to run array /dev/md2: Input/output error<br>
<div class="im">root@sysresccd /root % mdadm --detail /dev/md2<br>
/dev/md2:<br>
Version : 0.90<br>
Creation Time : Fri Aug 29 12:29:18 2008<br>
Raid Level : raid5<br>
Used Dev Size : 483492096 (461.09 GiB 495.10 GB)<br>
Raid Devices : 5<br>
Total Devices : 1<br>
Preferred Minor : 2<br>
Persistence : Superblock is persistent<br>
<br>
</div> Update Time : Thu May 13 20:22:11 2010<br>
<div class="im"> State : active, degraded, Not Started<br>
Active Devices : 1<br>
Working Devices : 1<br>
Failed Devices : 0<br>
Spare Devices : 0<br>
<br>
Layout : left-symmetric<br>
Chunk Size : 256K<br>
<br>
UUID : 549f851d:f698831d:8e1f38fa:6d8d3a6f<br>
</div> Events : 0.553049<br>
<div class="im"><br>
Number Major Minor RaidDevice State<br>
</div> 0 8 2 0 active sync /dev/sda2<br>
<div class="im"> 1 0 0 1 removed<br>
2 0 0 2 removed<br>
</div> 3 0 0 3 removed<br>
4 0 0 4 removed<br>
<div><div></div><div class="h5">root@sysresccd /root %<br>
<br>
<br>
--<br>
Gary Stainburn<br>
<br>
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may be snooped on by interested government parties for unknown<br>
and undisclosed purposes - Regulation of Investigatory Powers Act, 2000<br>
<br>
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</div></div></blockquote></div><br></div>