On Mon, Feb 02, 2015 at 02:48:26PM -0500, J. Bruce Fields wrote: > Previously: http://lkml.kernel.org/r/20150106175611.GA16413@xxxxxx > > > - any advice on testing? Is there was some simple > > virtual setup that would allow any loser with no special > > hardware (e.g., me) to check whether they've broken the > > block server? > > Run two kvm VMs that share the same disk. Create an XFS > filesystem on the MDS, and export it. If the client has blkmapd > running (on Debian it needs to be started manually) it will use > pNFS for accessing the filesystem. Verify that using the > per-operation counters in /proc/self/mounstats. Repeat with > additional clients as nessecary. > > Alternatively set up a simple iSCSI target using tgt or lio and > connect to it from multiple clients. > > Which sounds reasonable to me, but I haven't tried to incorporate this > into my regression testing yet. Additionally I can offer the following script to generate recalls, which don't really happen during normal operation. I don't really know how to write a proper testcase that coordinates access to the exported filesystem and nfs unless it runs locally on the same node, though. It would need some higher level, network aware test harness: ----- snip ----- #!/bin/sh set +x # wait for grace period touch /mnt/nfs1/foo dd if=/dev/zero of=/mnt/nfs1/foo bs=128M count=32 conv=fdatasync oflag=direct & sleep 2 echo "" > /mnt/test/foo && echo "recall done" _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
