Messages in this thread | | | Date | Sat, 21 Nov 2009 17:03:55 +0100 | From | Pierre Ossman <> | Subject | Re: Raid not shutting down when disks are lost? |
| |
Neil?
On Thu, 8 Oct 2009 16:39:52 +0200 Pierre Ossman <pierre-list@ossman.eu> wrote:
> Today one RAID6 array I manage decided to lose four out of eight disks. > Oddly enough, the array did not shut down but instead I got > intermittent read and writer errors from the filesystem. > > It's been some time since I had a failure of this magnitude, but I seem > to recall that once the array lost too many disks, it would shut down > and refuse to write a single byte. The nice effect of this was that if > it was a temporary error, you could just reboot and the array would > start nicely (albeit in degraded mode). > > Has something changed? Is this perhaps an effect of using RAID6 (I used > to run RAID5 arrays)? Or was I simply lucky the previous instances I've > had? > > Related, it would be nice if you could control how it handles lost > disks. E.g. I'd like it to go read-only when it goes in to fully > degraded mode. In case the last disk lost was only a temporary glitch, > the array could be made to recover without a lengthy resync. > > Rgds
-- -- Pierre Ossman
WARNING: This correspondence is being monitored by FRA, a Swedish intelligence agency. Make sure your server uses encryption for SMTP traffic and consider using PGP for end-to-end encryption. [unhandled content-type:application/pgp-signature] | |