Date: Sun, 6 May 2012 06:25:17 +0000 (UTC) From: Alexander Motin <mav@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r235071 - head/sbin/geom/class/raid Message-ID: <201205060625.q466PH73000106@svn.freebsd.org>
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Author: mav Date: Sun May 6 06:25:17 2012 New Revision: 235071 URL: http://svn.freebsd.org/changeset/base/235071 Log: Add description for GEOM RAID tunables/sysctls. MFC after: 1 week Modified: head/sbin/geom/class/raid/graid.8 Modified: head/sbin/geom/class/raid/graid.8 ============================================================================== --- head/sbin/geom/class/raid/graid.8 Sun May 6 05:58:56 2012 (r235070) +++ head/sbin/geom/class/raid/graid.8 Sun May 6 06:25:17 2012 (r235071) @@ -24,7 +24,7 @@ .\" .\" $FreeBSD$ .\" -.Dd May 3, 2012 +.Dd May 6, 2012 .Dt GRAID 8 .Os .Sh NAME @@ -276,6 +276,33 @@ corruption! .Sh 2TiB BARRIERS Promise metadata format does not support disks above 2TiB. NVIDIA metadata format does not support volumes above 2TiB. +.Sh SYSCTL VARIABLES +The following +.Xr sysctl 8 +variable can be used to control the behavior of the +.Nm RAID +GEOM class. +.Bl -tag -width indent +.It Va kern.geom.raid.aggressive_spare : No 0 +Use any disks without metadata connected to controllers of the vendor +matching to volume metadata format as spare. +Use it with much care to not lose data if connecting unrelated disk! +.It Va kern.geom.raid.clean_time : No 5 +Mark volume as clean when idle for the specified number of seconds. +.It Va kern.geom.raid.debug : No 0 +Debug level of the +.Nm RAID +GEOM class. +.It Va kern.geom.raid.idle_threshold : No 1000000 +Time in microseconds to consider a volume idle for rebuild puroses. +.It Va kern.geom.raid.name_format : No 0 +Providers name format: 0 -- raid/r{num}, 1 -- raid/{label}. +.It Va kern.geom.raid.read_err_thresh : No 10 +Number of read errors equated to disk failure. +Write errors are always considered as disk failures. +.It Va kern.geom.raid.start_timeout : No 30 +Time to wait for missing array components on startup. +.El .Sh EXIT STATUS Exit status is 0 on success, and non-zero if the command fails. .Sh SEE ALSO
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