Re: Vinum subdisk crash
From: Gareth Bailey (gjbailey_at_gmail.com)
Date: 06/30/05
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Date: Thu, 30 Jun 2005 15:37:56 +0200 To: freebsd-questions <freebsd-questions@freebsd.org>
Hello everyone,
Just to add, I had to type out the above message manually since I can't get
access to anything with the crashed subdisk on /usr.
With regard to Greg's requests for information when reporting vinum problems
as stated on vinumvm.org <http://vinumvm.org>'s website, I can provide the
following info:
What problems are you having?
My usr.p0.s0 subdisk reports a 'crashed' status
Which version of FreeBSD are you running?
4.10 Stable
Have you made any changes to the system sources, including Vinum?
No
Supply the output of the *vinum list* command. If you can't start Vinum,
supply the on-disk configuration, as described below. If you can't start
Vinum,
then (and only then) send a copy of the configuration file.
I can't get anything off the system, and its too long to type out! (I have
the same layout as in the Van Valzah article.)
Supply an *extract* of the Vinum history file. Unless you have explicitly
renamed it, it will be */var/log/vinum_history*. This file can get very big;
please limit it to the time around when you have the problems. Each line
contains a timestamp at the beginning, so you will have no difficulty in
establishing which data is of relevance.
I will summarise the tail of vinum_history (doesn't seem to provide any
interesting info):
30 Jun 2005 ***vinum started***
30 Jun 2005 list
30 Jun 2005 ***vinum started***
30 Jun 2005 dumpconfig
Supply an *extract* of the file */var/log/messages*. Restrict the extract to
the same time frame as the history file. Again, each line contains a
timestamp at the beginning, so you will have no difficulty in establishing
which data is of relevance.
Again, I will summarise the tail contents of messages:
30 Jun server /kernel: ad0s1h: hard error reading fsbn 59814344 of
29126985-29127080 (ad0s1 bn 59814344; cn 3723 tn 69 sn 2) trying PIO mode
30 Jun server /kernel: ad0s1h: hard error reading fsbn 59814344 of
29126985-29127080 (ad0s1 bn 59814344; cn 3723 tn 69 sn 2) status=59 error=40
30 Jun server /kernel: vinum: usr.p0.s0 is crashed by force
30 Jun server /kernel: vinum: usr.p0 is faulty
30 Jun server /kernel: vinum: usr is down
30 Jun server /kernel: fatal:usr.p0.s0 read error, block 29126985 for 49152
bytes
30 Jun server /kernel: usr.p0.s0: user buffer block 28102720 for 49152 bytes
If you have a crash, please supply a backtrace from the dump analysis as
discussed below under Kernel Panics. Please don't delete the crash dump; it
may be needed for further analysis.
I'm not sure if a kernel panic occurred?
I hope this information helps, and that someone can give me some advice!
Cheers,
Gareth
On 6/30/05, Gareth Bailey <gjbailey@gmail.com> wrote:
>
> Hello,
>
> It appears that one of the vinum subdisks on my server has crashed. On
> rebooting I get the following message:
>
>
> <-- start message -->
>
> Warning: defective objects
>
> V usr State:down Plexes:2 Size:37GB
> P usr.p0 C State:faulty Subdisks:1 Size:37GB
> P usr.p1 C State:faulty Subdisks:1 Size:37GB
> S usr.p0.s0 State:crashed P0:0 B Size:37GB
> S usr.p1.s0 State:stale P0:0 B Size:37GB
>
> [some fsck messages]
> Can't open /dev/vinum/usr: Input/output error
> [some more fsck messages]
> THE FOLLOWING FILE SYSTEM HAD AN UNEXPEXTED INCONSISTENCY:
> /dev/vinum/usr (/usr)
> Automatic file system checj failed . . . help!
> Enter full pathname of shell....
>
> <-- end message -->
>
> I have a straight forward configuration based on the "Bootstrapping Vinum:
> A Foundation for Reliable Servers" article by Robert Van Valzah.
> What could have caused this? The disks are pretty new. Please advise on
> the quickest route to getting our server back online.
>
> Much appreciated,
>
> Gareth Bailey
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