On Fri, 2006-05-26 at 20:37, Raymond Lillard wrote:
Note that unless it has changed recently, SATA drives don't pass errors up to the software raid layer correctly. If a drive dies it doesn't get kicked out as it should.
Would you please elaborate as this seems to run counter to my experience?
I have had 3 drive fail events with software raid (md) tools and SATA drives in the last year. The drive was taken off-line and I as the sysadm received a warning message via email.
I downed the systems (after-hours) and replaced the failed drive. (These machines don't have hot- swappable h/w) No problems were encountered.
I'm just repeating what I've seen elsewhere - which is that if you have hot-swaps you can yank a drive and it doesn't show as failed in the raid. I don't have any SATA's myself - mine are all SCSI and they have failed correctly. Perhaps it depends on the failure mode.