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List:       intermezzo-discuss
Subject:    Re: SEGMENTATION FAULT  - sanity check missing in presto_walk()
From:       "Fran=?iso-8859-1?Q?=E7ois GAGNON?=" <gagnon.francois () wanadoo ! fr>
Date:       2002-11-20 17:33:35
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To avoid confusion, please note that the problem disappeared
when I updated the kernel module (intermezzo) with the version
contained in intersync.0.9.5... (apparently kernel module in
kernel 2.4.18 is still incompatible with intersync.0.9.5)

So I conclude that I had the wrong answer,
as mount -t intermezzo /dev/sda6 /exports/server
now works fine (for me).

Sorry

> Messsage du 20/11/2002 16:52
> De : François GAGNON <gagnon.francois@wanadoo.fr>
> A :  <aloc0020@sauce.cnice.mecd.es>,  <intermezzo-discuss@lists.sourceforge.net>
> Copie à :
> Objet : Re: SEGMENTATION FAULT  - sanity check missing in presto_walk() 
> 
> These is a sanity check missing in prestowalk() in case
> a newbie (like me !) forgets to specify the options to the
> mount command (or forgets to create a config file).
> 
> Put something similar to this in /etc/fstab and seg. fault
> should disappear:
> 
> "/dev/sda6    /exports/server  intermezzo \
> fileset=gfs,mtpt=/exports/server,prestodev=/dev/sda6,cachetype=ext3,noauto 0 0" 
> Please let me know if this is not the problem (I am a newbie :-)),
> 
> Good luck !
> 
> 
> int prestowalk(const char *name, struct nameidata *nd)
> {
> int err;
> /* we do not follow symlinks to support symlink operations
> correctly. The vfs should always hand us resolved dentries
> so we should not be required to use LOOKUPFOLLOW. At the
> reintegrating end, lento again should be working with the
> resolved pathname and not the symlink. SHP
> XXX: This code implies that direct symlinks do not work. SHP
> */
> unsigned int flags = LOOKUPPOSITIVE;
> 
> ENTRY;
> err = 0;
> 
> if (name == NULL)
> {
> printk(KERNINFO "... prepare to crash somewhere further down !  \n");
> }
> if (pathinit(name, flags, nd))
> err = pathwalk(name, nd);
> return err;
> }
> 
> 
> 
> 
> > Messsage du 20/11/2002 14:02
> > De : Alberto Lopera <aloc0020@sauce.cnice.mecd.es>
> > A :  <intermezzo-discuss@lists.sourceforge.net>
> > Copie à :
> > Objet : SEGMENTATION FAULT
> > 
> > My server:
> > - Red hat 8.0
> > - Pentium 3
> > - 128 MB RAM
> > 
> > > > insmod intermezzo
> > > > Using /lib/modules/2.4.18-14/kernel/fs/intermezzo/intermezzo.o
> > insmod: a module named intermezzo already exists
> > 
> > > > mount - t intermezzo /dev/hda1 /exports/server
> > > > SEGMENTATION FAULT
> > 
> > Where is the throuble ?????
> > 
> > Thanks
> > 
> > 
> > 
> > Alberto Lopera
> > Alberto.Lopera@sauce.cnice.mecd.es
> > Departamento de Telemática
> > 
> > 
> > 
> > 
> > 
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> 
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