Date: Mon, 29 Nov 2004 12:57:17 +0100 From: "Simon L. Nielsen" <simon@FreeBSD.org> To: Terje Elde <terje+geom@elde.net> Cc: freebsd-geom@freebsd.org Subject: Re: mirror handling of broken harddrives Message-ID: <20041129115717.GA753@zaphod.nitro.dk> In-Reply-To: <20041129114740.GD90910@calleigh.elde.net> References: <20041129114740.GD90910@calleigh.elde.net>
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--CE+1k2dSO48ffgeK Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2004.11.29 12:47:40 +0100, Terje Elde wrote: > Given faulty hardware, resulting in: >=20 > ad0: TIMEOUT - READ_DMA retrying (2 retries left) LBA=3D35170616 > ad0: TIMEOUT - READ_DMA retrying (1 retry left) LBA=3D35170616 > ad0: FAILURE - READ_DMA timed out >=20 > How would this be handled by geom_mirror if it was a part of a two-plex > volume? I can show you from my log how it handles it :-) : ad0: TIMEOUT - WRITE_DMA retrying (2 retries left) LBA=3D152911 ad0: FAILURE - WRITE_DMA timed out GEOM_MIRROR: Request failed (error=3D5). ad0[WRITE(offset=3D78290432, lengt= h=3D16384)] GEOM_MIRROR: Device boot: provider ad0 disconnected. GEOM_MIRROR: Device boot: provider ad0 detected. GEOM_MIRROR: Device boot: rebuilding provider ad0. GEOM_MIRROR: Device boot: rebuilding provider ad0 finished. GEOM_MIRROR: Device boot: provider ad0 activated. So, it just works :-). Actually the mirror in question has rebuild itself like that many times, and I actually only noticed after quite a while :-). I actually had more or less the same (the ata errors) happen on another system, which uses ata(4) for RAID1, and there I had to manually rebuild the mirror... geom_mirror has just worked great for me, thanks Pawel! :-) --=20 Simon L. Nielsen --CE+1k2dSO48ffgeK Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (FreeBSD) iD8DBQFBqw6dh9pcDSc1mlERAorBAJ97A9ysQBAoaCTPOTMoG5dPWY9Y+wCfYmk7 SwdeBoAMnwGBvl7FAiP+LzI= =t4eM -----END PGP SIGNATURE----- --CE+1k2dSO48ffgeK--
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