[PVFS-users] mmargo

[Martin Margo]

Dear list,

I have a 20 nodes two way itanium cluster running suse linux 
2.4.21_144. Each node is an iod and a client, one head node is all 
three (mgr,iod,client). we are pvfs 1.6.2. I setup this system to 
perform benchmarking on PVFS. To benchmark pvfs, i used a tool from 
ASCI called IOR (v2.7.3) an mpi coordinated test of parallel I/O.

Each iod has access to 73 GB internal SCSI disk thus making the entire 
fs 1.3TB in size.

My ior test hung almost all the time, usually one of the client hung 
and not responding. I started out with each node writing a 1 GB file 
with 16k blocksize, and then increase the blocksize and keeping the 1 
GB file constant. I saw that Rob had a patch out on January 29 2004, is 
that patch incorporated into pvfs 1.6.2? I would like to try the patch 
but I couldn's seem to get it from the list, is it available somewhere 
in the website / ftp server?

by the way this is the error I got in syslog from the node that hung.

Mar  3 01:49:12 tg-c131 kernel: (ll_pvfs.c, 233): ll_pvfs_create failed 
on enqueue
  for 198.202.112.166:30004/pvfs-meta/testFile
Mar  3 01:49:18 tg-c131 kernel: (ll_pvfs.c, 507): ll_pvfs_statfs failed 
on enqueue
  for 198.202.112.166:30004/pvfs-meta
Mar  3 01:49:18 tg-c131 kernel: (inode.c, 264): pvfs_statfs failed
Mar  3 01:50:54 tg-c131 sshd[9466]: Accepted rsa for root from 
::ffff:198.202.112.
166 port 33773


Thanks in advance.

-Martin W Margo
HPC Engineer
San Diego Supercomputer Center