[SOLVED]: URGENT 810 Software RAID failed after power outage

[Beeker]

Hi Crumble,
Installed the new HDD and tried

mdadm --stop /dev/md1
mdadm --assemble --force /dev/md1 /dev/sd[b,c,d,e,f] 


And got

dcerouter_1024641:/home/bruce# mdadm --stop /dev/md1
mdadm: stopped /dev/md1
dcerouter_1024641:/home/bruce# mdadm --assemble --force /dev/md1 /dev/sd[b,c,d,e,f]
mdadm: no recogniseable superblock on /dev/sdb
mdadm: /dev/sdb has no superblock - assembly aborted
dcerouter_1024641:/home/bruce#

Any thoughts

Regards
Beeker

[Beeker]

Also I tried the first command of mdadm -D /dev/md1

And got

dcerouter_1024641:/home/bruce# mdadm -D /dev/md1
mdadm: md device /dev/md1 does not appear to be active.

May be look up Beeker in the Funeral Notices 

Regards
Beeker

[Crumble]

OK, this is good actually.  We know what the problem is finally.  Besides a bad HDD.  I will show you where to look in a few hours.  Doing some work this friday.  Don't panic this is fixable.

[Beeker]

Awesome news means I can cancel the funeral director

[Crumble]

OK, first lets do this.

fdisk -l to make sure the partitions are named the same after replacing the drive.  post the output

[Beeker]

Here you go

dcerouter_1024641:/home/bruce# fdisk -l

Disk /dev/sda: 750.1 GB, 750156374016 bytes
255 heads, 63 sectors/track, 91201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x39686ed2

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1       90446   726507463+  83  Linux
/dev/sda2           90447       91201     6064537+   5  Extended
/dev/sda5           90447       91201     6064506   82  Linux swap / Solaris

Disk /dev/sdb: 1500.3 GB, 1500301910016 bytes
255 heads, 63 sectors/track, 182401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x0006a5c8

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1      182401  1465136001   83  Linux

Disk /dev/sdc: 1500.3 GB, 1500301910016 bytes
255 heads, 63 sectors/track, 182401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xb217d64b

   Device Boot      Start         End      Blocks   Id  System
/dev/sdc1               1      182401  1465136001   83  Linux

Disk /dev/sdd: 1500.3 GB, 1500301910016 bytes
255 heads, 63 sectors/track, 182401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x43b7a284

   Device Boot      Start         End      Blocks   Id  System
/dev/sdd1               1      182401  1465136001   83  Linux

Disk /dev/sde: 1500.3 GB, 1500301910016 bytes
240 heads, 63 sectors/track, 193801 cylinders
Units = cylinders of 15120 * 512 = 7741440 bytes
Disk identifier: 0x2848762e


   Device Boot      Start         End      Blocks   Id  System
/dev/sde1   *          14      193802  1465033728    7  HPFS/NTFS

[Crumble]

haha ok geez something has changed.  im trying to figure out what happened. 

[Beeker]

Thanks I will hold off contacting the funeral director

[Beeker]

FYI

The 4 x HDD's in the RAID are still showing as removed

[Crumble]

ah ok so we have d now but no f LOL.  maybe jiggled a wire loose?  and it looks like e is formatted for HPFS/NTFS.  UH, HPFS... o.0  what in the wild world of sports?  I have not seen that before!  That has got to be formatted first and we need /dev/sdf back.  I hope i just never noticed that linux reports NTFS as HPFS/NTFS.  HPFS has been dead since NT 4.0 came out.  Read quote from microsoft LOL!

Disadvantages of HPFS
Because of the overhead involved in HPFS, it is not a very efficient choice for a volume of under approximately 200 MB. In addition, with volumes larger than about 400 MB, there will be some performance degradation. You cannot set security on HPFS under Windows NT.

HPFS is only supported under Windows NT versions 3.1, 3.5, and 3.51. Windows NT 4.0 cannot access HPFS partitions.

[Crumble]

and thats ok if the drives are still showing as removed.  we have a bad superblock to fix, I am assuming we will find some more but we will get to that in a bit.  gotta get those two things sorted first.

[Beeker]

I have removed sdd1 and just formatting with ext3 from my Win 7 PC using mini partition wizard than I will put it back in and run fdisk -l again and will post the results

[Crumble]

NO DON"T DO THAT
E Beeker E

[Beeker]

Sorry oops to late as that was the replacement HDD that was showing as no valid partition so I figured it needed to be formatted as ext3

[Beeker]

Have I stuffed things ?