[PVFS-developers] Re: pvfs 1.6.2 on old 2.4 kernel?

[Jörg Meltzer]

Robert Latham wrote:
> On Wed, Feb 04, 2004 at 12:38:09PM +0100, Jörg Meltzer wrote:
> 
>>First of all deamons are running fine, pvfs-ping reports an
>>operational filesystem, but when I mount a filesystem it crashes the
>>pvfsd and causes the mount command to hang.  I guess it tries to
>>read some info we filtered out in pvfs_show_options.
> 
> 
>>cat pvfslog shows up
>>(pvfsd.c, 433): $Header: /projects/cvsroot/pvfs-kernel/pvfsd.c,v 1.41 
>>2003/10/22 15:46:20 rbross Exp $(pvfsd.c, 434):
>>(pvfsd.c, 599): fatal error occurred reading from device, errno = 22
>>(pvfsd.c, 470): pvfsd: read failed
> 
> 
> I don't know what's going on here, and i don't have ready access to a
> 2.4.9 kernel... just to be sure, did you restart pvfsd and reload the
> kernel module after patching and rebuilding pvfs-kernel?
> 
> I'm attaching the patch to pvfs-kernel which introduced these changes:
> it's designed to let pvfsd better handle SIGINT, but it's entirely
> possible the signal handling has changed from your version of 2.4.9 to
> what we use now. 
> 
> Maybe if you reverse-apply the attached patch (patch -R), it will
> make pvfs-kernel work with 2.4.9 .  Start from a plain 1.6.2 tree:
> this patch supercedes my earlier patch.
> 
> Good luck
> ==rob
> 
It still is not working, this is what I did

killall iod pvfsd mgr
rmmod pvfs

tar xvfz ~bzcmeltz/pvfs1.6.2/pvfs-kernel-1.6.2-linux-2.4.tgz
patch -R <~bzcmeltz/pvfs1.6.2/intr_patch.diff

patching file inode.c
patching file kpvfsd.c
patching file kpvfsd.h
patching file kpvfsdev.c
patching file ll_pvfs.c
patching file ll_pvfs.h
patching file mount.pvfs.c
patching file pvfs_mount.h
patching file pvfsdev.c
Hunk #3 succeeded at 976 (offset 3 lines).
Hunk #5 succeeded at 1001 (offset 3 lines).
Hunk #7 succeeded at 1071 (offset 3 lines).
Hunk #9 succeeded at 1116 (offset 3 lines).
Hunk #11 succeeded at 1174 (offset 3 lines).
Hunk #13 succeeded at 1274 (offset 3 lines).
Hunk #15 succeeded at 1322 (offset 3 lines).
Hunk #17 succeeded at 1368 (offset 3 lines).
patch unexpectedly ends in middle of line
Hunk #18 succeeded at 1465 with fuzz 1.

... # configure & make succeed

# copy pvfs.o & mkmgrconf & iod stuff

ps -ef | egrep "iod|mgr|pvfsd"
root      6457     1  0  2003 ?        00:00:29 [rpciod]
root      6462     1  0 18:42 ?        00:00:00 /usr/local/sbin/mgr
nobody    6464     1  0 18:42 ?        00:00:00 /usr/local/sbin/iod
root      6466     1  0 18:42 ?        00:00:00 /usr/local/sbin/pvfsd

pvfs-ping -h 10.10.255.239 -f /pvfs-meta
mgr (10.10.255.239:3000) is responding.
iod 0 (10.10.255.239:7000) is responding.
pvfs file system /pvfs-meta is fully operational.

# Its still hanging when I mount the fs.
[root at compute-0-14 pvfs-kernel-1.6.2-linux-2.4]# ./mount.pvfs 10.10.255.239:/pvfs-meta /mnt/pvfs


(pvfsd.c, 433): $Header: /projects/cvsroot/pvfs-kernel/pvfsd.c,v 1.41 2003/10/22 15:46:20 rbross Exp $(pvfsd.c, 434):
(pvfsd.c, 641): fatal error occurred writing to device, errno = 22
(pvfsd.c, 470): pvfsd: write failed

# where the fatal error is
write_pvfsdev_restart:
    if ((ret = write(fd, down, sizeof(*down))) < 0) {
       if (errno == EINTR) goto write_pvfsdev_restart;



Ciao,
   Jörg