[CentOS] 3ware disk failure -> hang
Bryan J. Smith
thebs413 at earthlink.net
Fri Jan 6 21:41:10 UTC 2006
Les Mikesell <lesmikesell at gmail.com> wrote:
> No, I've had several SCSI drive failures in software
> raid and the kernel will gracefully log the errors,
> mark the drive failed in the md array and go on about
> its business. This doesn't happen with typical
> IDE devices, but the 3ware isn't a typical IDE
> controller.
Then the 3Ware card must not be doing something that a
typical SCSI card does, and more typical of a "dumb" block
ATA driver, even though it's using the SCSI subsystem.
> If you do everything in the right order, you can replace
> a failed hot-swap scsi drive and rebuild the software
> raid without shutting the machine down.
Again, SCSI cards must have some added notification, or at
least the ones you are using. I guess that would make sense,
because there _is_ the "host adapter" on-board.
In any case, 3Ware cards do _not_ do it for JBOD.
--
Bryan J. Smith Professional, Technical Annoyance b.j.smith at ieee.org http://thebs413.blogspot.com
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*** Speed doesn't kill, difference in speed does ***
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