Today after the maintenance we've noticed bad client side performance - unlike before when performance was fine and good.
The file system itself seems to be going really fast right now, we are seeing 1.6G/s (YES, Gigabytes per second) writes and reads, with random reads still above 540M etc. with iozone -a -s 16g -r 4096 -T test.
This needs more diagnosis, but by the looks of it the culprit now is the iscsi daemon istgt.
There's been reliability issues as well for the past day, one volume got corrupted and several machines required reboots to regain access to storage.
Domingo, Julho 14, 2013
