Carlos H. Reimer wrote:
The server is showing up normally 100.00% disk utilization but this morning I´ve shutted down the database and the iostat was still showing 100.00 %util.
...
Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 451876.46 0.00 0.00 100.00 sdb 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 451876.46 0.00 0.00 100.00 md1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 md0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Check /proc/mdstat. Is one of your RAID devices rebuilding? Also try watching iostat for more than one sample: iostat -x 2