Date: Mon, 10 Jan 2011 22:38:15 -0500 From: Dan Langille <dan@langille.org> To: John Hawkes-Reed <hirez@libeljournal.com> Cc: freebsd-stable <freebsd-stable@freebsd.org> Subject: Re: ZFS - hot spares : automatic or not? Message-ID: <4D2BD0A7.9060003@langille.org> In-Reply-To: <4D23504D.8060103@libeljournal.com> References: <4D228F41.7040403@langille.org> <4D23504D.8060103@libeljournal.com>
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On 1/4/2011 11:52 AM, John Hawkes-Reed wrote: > On 04/01/2011 03:08, Dan Langille wrote: >> Hello folks, >> >> I'm trying to discover if ZFS under FreeBSD will automatically pull in a >> hot spare if one is required. >> >> This raised the issue back in March 2010, and refers to a PR opened in >> May 2009 >> >> * http://lists.freebsd.org/pipermail/freebsd-fs/2010-March/007943.html >> * http://www.freebsd.org/cgi/query-pr.cgi?pr=134491 >> >> In turn, the PR refers to this March 2010 post referring to using devd >> to accomplish this task. >> >> http://lists.freebsd.org/pipermail/freebsd-stable/2010-March/055686.html >> >> Does the above represent the the current state? >> >> I ask because I just ordered two more HDD to use as spares. Whether they >> sit on the shelf or in the box is open to discussion. > > As far as our testing could discover, it's not automatic. > > I wrote some Ugly Perl that's called by devd when it spots a drive-fail > event, which seemed to DTRT when simulating a failure by pulling a drive. Without such a script, what is the value in creating hot spares? -- Dan Langille - http://langille.org/
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