Re: Vinum raid5 problems......

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Date: Fri, 04 Mar 2005 11:52:57 -0600
To: "Greg 'groggy' Lehey" <grog@FreeBSD.org>, freebsd <freebsd-questions@FreeBSD.org>

Greg 'groggy' Lehey wrote:
> On Thursday, 3 March 2005 at 15:35:31 -0600, matt virus wrote:
>
>>Hi all:
>>
>>I have a FBSD 5.2.1 box running vinum. 7 *160gb drives in a raid5 array.
>>
>>I can post specific errors and logs and such later, i'm away from the
>>box right now --- anybody have any thoughts ?
>
>
> How about http://www.vinumvm.org/vinum/how-to-debug.html?
>
> Greg
> --
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freebsd 5.2.1

specific problems:

1) a post-mount FSCK causes a kernel panic
2) an FSCK from single user mode errors with "cannot allocate xxxxxxxx
bytes for inphead"
3) in single user mode, the array will mount and do a small fsck -
recalculate the superblock, and then allow me to traverse the array.
When i try to access files on the array, i get an error :
"null rqg"

zero source changes

Vinum List:

vinum -> list
7 drives:
D d7 State: up /dev/ad11s1d A: 0/156327 MB (0%)
D d6 State: up /dev/ad10s1d A: 0/156327 MB (0%)
D d5 State: up /dev/ad8s1d A: 0/156327 MB (0%)
D d4 State: up /dev/ad7s1d A: 0/156327 MB (0%)
D d3 State: up /dev/ad6s1d A: 0/156327 MB (0%)
D d2 State: up /dev/ad5s1d A: 0/156327 MB (0%)
D d1 State: up /dev/ad4s1d A: 0/156327 MB (0%)

1 volumes:
V raid5 State: up Plexes: 1 Size: 915 GB

1 plexes:
P raid5.p0 R5 State: up Subdisks: 7 Size: 915 GB

7 subdisks:
S raid5.p0.s0 State: up D: d1 Size: 152 GB
S raid5.p0.s1 State: up D: d2 Size: 152 GB
S raid5.p0.s2 State: up D: d3 Size: 152 GB
S raid5.p0.s3 State: up D: d4 Size: 152 GB
S raid5.p0.s4 State: up D: d5 Size: 152 GB
S raid5.p0.s5 State: up D: d6 Size: 152 GB
S raid5.p0.s6 State: up D: d7 Size: 152 GB

Vinum log extract:

A few days ago, the array was "mucked" -- i saw one of subdisks was
down...here's the log from that incident

2 Mar 2005 21:46:22.721677 *** vinum started ***
  2 Mar 2005 21:46:25.871262 list
  2 Mar 2005 21:46:28.935388 start
  2 Mar 2005 21:46:31.153046 list
  2 Mar 2005 21:46:46.616922 start raid5.p0.s6
  2 Mar 2005 21:46:49.949753 quit

Other than that - there is nothing of particular note in the vinum
history - the entire file can be supplied if need be.

Kernel dumps will be supplied later today or tomorrow - i'm not going to
load up and dump the raid5 array for fear of further corruption. I'm
gathering hardware to make an image of it onto a hardware raid5
controller and see if i can salvage it from there.

If you need more, say the word. The kernel dumps will come soon

-- 
Matt Virus ("veer-iss")
http://www.mattvirus.net
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• Previous message: Michael R. Wayne: "Re: Are quotas possbile on md filesystems?"
• In reply to: Greg 'groggy' Lehey: "Re: Vinum raid5 problems......"
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