Sat Oct 20 22:22:51 CEST 2007

Small reminder: SW RAID-5 is crap on Linux

Yes, it is unusable. Slow when running in degraded mode and terribly slow rebuild. It took approx. 2 days and 13 hours to rebuild 1TB RAID-5 array with 4 *fast* disks. The system was next to unusable when rebuilding.

This is the second time I realized that software RAID in Linux kernel is unusable. I won't try it again despite what other people are telling me.

And I was so naive that I wanted to wait for the completition of the rebuild...

The next time this happens, I'll announce service outage to do a complete restore from backups instead of rebuilding the array. It will take me an hour or two...

Posted by Pavel | Permanent link | File under: Work