[Bugs] [Bug 1250704] Random errors when reading multiple files in parallel on disperse volume

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1250704



--- Comment #13 from Xavier Hernandez <xhernandez at datalab.es> ---
Even with those errors on the bricks, that doesn't explain why the answer sent
by the server cannot be decoded on the client.

Even if disperse sends bad data, the answer should be valid (i.e. correctly
decoded) and contain an error. The XDR error means that the bricks are sending
garbage or the answer is getting corrupted in the middle.

Can you check if ethernet inteface reports any errors ? for example with an
ifconfig command.

It would really be interesting to do the same test without using network. If
you have at least one ssd with several GB, you can create a local volume with
multiple bricks on the same ssd using this command:

gluster volume create voltest disperse 6 redundancy 2
science03:/brick_ssd_1/gv{1..6} force

After that, you can mount the volume on the same server and repeat the test
locally. A test with 10 files of 1GB each in this configuration will need 15 GB
of storage. I hope you have this space available on your ssd.

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