I'm trying to rsync a RAID 1 on a system with absolutely nothing running ( i've moved all services to another server ). So it's just me via ssh. For some reason, it's very slow:
cat /proc/mdstat Personalities : [raid1] md1 : active raid1 sdc1 sda1 104320 blocks [2/2] [UU] md2 : active raid1 sdd1 1953511936 blocks [2/1] [_U] bitmap: 10/233 pages [40KB], 4096KB chunk md0 : active raid1 sdc3 sda3 240814272 blocks [2/1] [_U] [>....................] recovery = 1.0% (2488576/240814272) finish=8243.9min speed=479K/sec bitmap: 94/230 pages [376KB], 512KB chunk unused devices:
I already tried:
- Setting /proc/sys/dev/raid/speed_limit_min to a very high value
- Setting --bitmap=internal
None of these worked.
I also run smartctl on all HDs, no errors were detected. They seem fine. Hdparm also reports an average speed of 4000MB/s for reads. Which seems acceptable.
Any ideas of what might be happening?
I'm running centos 5.5 and my kernel is 2.6.18-274.7.1.el5.028stab095.1.