Date: Wed, 10 Sep 2008 15:30:10 +0200 From: Miroslav Lachman <000.fbsd@quip.cz> To: Nuno Martinho <nuno.martinho@mail.pt> Cc: freebsd-geom@freebsd.org Subject: Re: GEOM_MIRROR Errors Message-ID: <48C7CBE2.1000904@quip.cz> In-Reply-To: <20080910102740.4b1dab5d@www.trote.org> References: <20080910102740.4b1dab5d@www.trote.org>
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Nuno Martinho wrote: > > I have a RAID 1 that was working fine without errors reported. The RAID was not on Degraded state. > When i shutdown Freenas, GEOM_MIRROR start to report errors during shutdown. > I’ve checked SMART and there are no problems with the disks. > > During shutdown: > Sep 10 07:33:15 kernel: ad6: TIMEOUT - WRITE_DMA48 retrying (1 retry left) LBA=976773167 > Sep 10 07:33:20 kernel: ad6: TIMEOUT - WRITE_DMA48 retrying (0 retries left) LBA=976773167 > Sep 10 07:33:25 kernel: ad6: FAILURE - WRITE_DMA48 timed out LBA=976773167 > Sep 10 07:33:25 kernel: GEOM_MIRROR: Cannot write metadata on ad6 (device=raid1, error=5). > Sep 10 07:33:25 kernel: GEOM_MIRROR: Cannot update metadata on disk ad6 (error=5). > Sep 10 07:33:32 kernel: ad7: TIMEOUT - WRITE_DMA48 retrying (1 retry left) LBA=976773167 > > > During startup: > Sep 10 07:47:47 kernel: ad6: 476940MB <WDC WD5000AAKB-00YSA0 12.01C02> at ata3-master UDMA100 > Sep 10 07:47:47 kernel: ad7: 476940MB <WDC WD5000AAKB-00YSA0 12.01C02> at ata3-slave UDMA100 > Sep 10 07:47:47 kernel: GEOM_MIRROR: Device raid1 created (id=3401427605). > Sep 10 07:47:47 kernel: GEOM_MIRROR: Device raid1: provider ad7 detected. > Sep 10 07:47:47 kernel: GEOM_MIRROR: Device raid1: provider ad6 detected. > Sep 10 07:47:47 kernel: GEOM_MIRROR: Component ad6 (device raid1) broken, skipping. > Sep 10 07:47:47 kernel: GEOM_MIRROR: Device raid1: provider ad7 activated. > Sep 10 07:47:47 kernel: GEOM_MIRROR: Device raid1: provider mirror/raid1 launched. > > If i try to insert disk “ad6” in the mirror: > Sep 10 07:49:40 kernel: GEOM_MIRROR: Component ad6 (device raid1) broken, skipping. > Sep 10 07:49:40 kernel: GEOM_MIRROR: Cannot add disk ad6 to raid1 (error=22). > > The only solution was rebuild the mirror. > > Why this errors? It can be caused by bad cables or controller. I had similar problems on ASUS RS-120 with Intel controller, somebody have same problems with Silicon Image chips. You can re-use ad6 by: gmirror forget raid1 [it will not destroy your mirror data, just remove info about disconnected devices (ad6 in this case)] gmirror clear ad6 [remove metadata from ad6] gmirror insert raid1 ad6 [reinsert ad6 in to raid1 and start resync] Miroslav Lachman
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