Date: Thu, 27 Jun 2013 11:58:06 -0500 From: Adam Vande More <amvandemore@gmail.com> To: Charles Swiger <cswiger@mac.com> Cc: =?ISO-8859-2?Q?Nikola_Pavlovi=E6?= <nzp@riseup.net>, FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: Troubleshooting a gmirror disk marked broken Message-ID: <CA%2BtpaK0rT83sMcaQTsg3m31Gr2RrnZBTbDgr-sZyWAS_6fzS5w@mail.gmail.com> In-Reply-To: <36C962B9-ABC4-45E3-AC94-46D6CEE960E1@mac.com> References: <20130627023837.GA7685@sputnjik.localdomain> <36C962B9-ABC4-45E3-AC94-46D6CEE960E1@mac.com>
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On Thu, Jun 27, 2013 at 10:16 AM, Charles Swiger <cswiger@mac.com> wrote: > If you haven't rebuilt the mirror already, running a full disk read scan > against both drives (ie, via "dd if=/dev/ad4 of=/dev/null bs=1m" or > similar) > might be prudent. That will help identify/migrate any sectors which are > failing but still recoverable via ECC to the spare sectors. > I was going to say something like that too but AFAIK sectors aren't remapped on failed reads, has to be written to(dd if=/dev/zero of=/dev/ad4 bs=1m). If it were me, I make sure I had fully tested complete backups before I broke the mirror and did that. -- Adam Vande More
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