Re: panic: ffs_valloc: dup alloc

From: Jeremie Le Hen <jeremie_at_le-hen.org>
Date: Wed, 26 Oct 2005 15:56:42 +0200
Hi Ulrich,

> updated my server to 6.0RC1 (needed GELI, so I went straight to 6.0) and
> got this panic while moving 20GB of data to a GELI+GMIRROR backed
> volume.
> 
> mode = 015115, inum = 444208, fs = /vol2
> panic: ffs_valloc: dup alloc
> Uptime: 7h55m14s

It would be far more useful to provide a backtrace.  You can achieve
this by asking FreeBSD to frop to DDB upon panic and then use the
"trace" command.

> No WITNESS, no INVARIANTS, no DDB. Sorry. Should I retry with these
> settings?

Yes, INVARIANTS are useful to have, and I think DDB is a must :-).

> Due to performance reasons, I went with a geli-sectorsize of 8192 for
> this particular volume, resulting in a bs/fs of 16384/8192.
> 
> Is this an incredibly stupid thing to do? How else could I speed up the
> operation of GELI? (No, sadly GBDE is even slower).

I don't know, but the kernel should not panic anyway.

Regards,
-- 
Jeremie Le Hen
< jeremie at le-hen dot org >< ttz at chchile dot org >
Received on Wed Oct 26 2005 - 11:57:08 UTC

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