Re: 2.5.42-mm2 hangs system

[Andrew Morton <akpm@digeo.com>]

Dipankar Sarma wrote:
> 
> On Wed, Oct 16, 2002 at 08:59:08PM +0200, Henrik Storner wrote:
> > well you hit the nail right on the head there.
> >
> > I've just been running the 2.5.42-mm2 kernel except for the dcache_rcu
> > patch for a full hour, and I was unable to reproduce the hangs that I
> > saw with the full -mm2 patch installed. Did two full kernel builds
> > while reading some mail and doing other stuff - no problems what so
> > ever.
> >
> > Just to be sure, I re-applied the dcache_rcu patch, rebuilt the
> > kernel, booted with the kernel containing dcache_rcu patch,
> > and the system died within a few minutes.
> >
> > So it is definitely something in the dcache_rcu patch that does it.
> 
> Well, I am not quite sure of this yet. Maneesh pointed out this earlier -
> In this machine with 2.5.42-mm2 and no dcache_rcu, (with your .config),
> we see  this -
> 
> [root@llm04 dbench]# df
> Filesystem           1k-blocks      Used Available Use% Mounted on
> /dev/sda6              1004024    461168    491852  49% /
> /dev/sda1               505605     38348    441153   8% /boot
> /dev/sda5              2514172   1791560    594900  76% /usr
> none                    257532         0    257532   0% /dev/shm
> /dev/sdb5              6324896     23996   5979604   1% /mnt/sdb5
> llm04:/mnt/sdb5        6324896     23968   5979616   1% /mnt/sdc1
> /dev/sda2              9068648   3993040   4614948  47% /home
> [root@llm04 dbench]# pwd
> /mnt/sdc1/dbench
> root@llm04 dbench]# ./dbench 4
> 4 clients started
> ..........................................................................................................................................rmdir CLIENTS/CLIENT2/~DMTMP/WORDPRO failed (Directory not empty)
> rmdir CLIENTS/CLIENT2/~DMTMP/PARADOX failed (Directory not empty)

Is this dbench-on-NFS?  That has always failed - it's to do
with the funny NFS handling of unlinked-while-open files.
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/