On Tue, Jul 9, 2013 at 3:46 PM, NeilBrown <neilb@xxxxxxx> wrote: > On Tue, 9 Jul 2013 15:33:29 -0600 Curtis <serverascode@xxxxxxxxx> wrote: > >> Hi All, >> >> I'm wondering what the best way to determine when a RAID0 has failed? >> >> We have some stateless servers that use a stripe/RAID0, but we'll need >> to know if it failed so we can pull it out of the "cluster" and >> rebuild it. It would be better to find out sooner than later that the >> stripe has failed. >> >> I know from reading the man page that I can't use mdadm to monitor the >> stripe. Is it basically just that the device becomes unusable in some >> fashion? >> > > How would you determine if a lone drive had failed? > Presumably by error messages in the kernel logs, or similar. > Use exactly the same mechanism to test if a RAID0 has failed. Ok, that makes total sense, thanks. :) > > (A "RAID0" doesn't fail as whole. Bits of it might, other bits might keep > working, just like a drive which can lose some sectors but other sectors keep > working. Certainly a whole drive can fail if it's logic-board dies. > Similarly a whole RAID0 can fail if the SATA/SCSI/USB controller dies.) Noted. Thanks again, Curtis. > > NeilBrown -- Twitter: @serverascode Blog: serverascode.com -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
