Re: reiserfs/md1/failure/threads

[Francesco Pietra <frapietra@alice.it>]

On Tuesday 18 July 2006 10:09, Goswin von Brederlow wrote:
> Francesco Pietra <frapietra@alice.it> writes:
> > Because the matter is rather obscure to me, sent also CC to mpqc although
> > it seems an exclusive problem of the OS.
> >
> > OS: Debian amd64 etch
> > Hardw: Tyan S2895 K8WE; two 265 dual opteron; 8GB ram Kingston ECC;
> > raid1; temperature cpu low throughout.
> >
> > Process: mpqc 2.3.1 calc b3lyp geom optimization  MCsearch OO calculation
> > for a large molecule, max_iterations = 40, memory = 5GB, launched as
> >
> > $mpqc -messagegrp "<ShmMessageGrp>:(n=4)" filename.in | tee filename.out
> >
> > all 40 iterations were completed in a couple of days, with "Optimization
> > NOT converged".
> >
> > Restarted from the last minimum geometry, with memory = 7 GB, launched as
> >
> > $ mpqc -threadgrp "<PthreadThreadGrp>:(num_threads=4)" filename.in | tee
> > filename.out
> >
> > calculation hanged after ca 11 hours with warnings:
> >
> > ReiserFS: md1: warning: vs-5150: searchby key: invalid format found in
> > block 589839. Fsck?
> >
> > ReiserFS: md1: warning: vs-13070: reiserfs_read_locked_inode: i/o failure
> > occurred during tryong to find stat data of [7109 7110 0x0 SD]
> >
> > ReiserFS: warning: is_tree_node: node level 0 does not match to the
> > expected one 1.
> >
> > and several other similar warnings.
> >
> > Thanks for suggestions
> >
> > francesco
>
> If you checkd the disks, cables, controler and parity of the raid
Is any software command to partly fulfill your suggestions?
> then 
> the only suggestion I can make is don't use reiserfs.
When installing the OS I thought that  the most recent fs (reiserfs 3.6) were 
the most secure. Actually I have reiserfs on i386 (no raid) with no problem. 
Anyway, probably a warning against reiserfs on the installation disk or 
manual would avoid much troubles to users and advicers.

Thanks a lot
francesco pietra
>
> MfG
>         Goswin