I am having a few issues with memory exhaustion on gnbd clients when writing large files to a gnbd server that re-exports ATAoE storage. These are files 6 or 7 GB or larger. If I export a SCSI disk from that same gnbd server I do not have issues, so it leads me to believe the slower ATAoE storage relative to local disk is causing the cache to fill up on the gnbd client. On the gnbd server, I export some ATAoE storage that has been chunked up by LVM: gnbd_export -c -d /dev/san00/lv00 -e lv00 And on the client: gnbd_import -i 10.0.0.1 -n Can any one suggest some proc settings to fiddle with, or other things to try? The gnbd server and clients are both FC4. Just one client, so no fencing or anything else. I have tried fiddling with different values in a couple of proc settings, and it seems to have helped a bit. In fact, I could not reliably write large files to the exported SCSI disk either, until I made these changes: echo 5 > /proc/sys/vm/dirty_background_ratio echo 5 > /proc/sys/vm/dirty_ratio My testwrite script is a Perl script that just writes 1's to a file. -- Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
