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Gentoo's Bugzilla – Attachment 282287 Details for
Bug 377977
gentoo-sources-2.6.39-r3 - XFS filesystem wedges during heavy metadata update
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raid configuration /etc/mdadm.conf
mdadm.conf (text/plain), 3.54 KB, created by
Lyall Pearce
on 2011-08-06 12:08:58 UTC
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Description:
raid configuration /etc/mdadm.conf
Filename:
MIME Type:
Creator:
Lyall Pearce
Created:
2011-08-06 12:08:58 UTC
Size:
3.54 KB
patch
obsolete
># mdadm configuration file ># ># mdadm will function properly without the use of a configuration file, ># but this file is useful for keeping track of arrays and member disks. ># In general, a mdadm.conf file is created, and updated, after arrays ># are created. This is the opposite behavior of /etc/raidtab which is ># created prior to array construction. ># ># ># the config file takes two types of lines: ># ># DEVICE lines specify a list of devices of where to look for ># potential member disks ># ># ARRAY lines specify information about how to identify arrays so ># so that they can be activated ># ># You can have more than one device line and use wild cards. The first ># example includes SCSI the first partition of SCSI disks /dev/sdb, ># /dev/sdc, /dev/sdd, /dev/sdj, /dev/sdk, and /dev/sdl. The second ># line looks for array slices on IDE disks. ># ># DEVICE /dev/sdb1 /dev/sdb3 /dev/sdb4 /dev/sdd1 /dev/sdd3 /dev/sdd4 > >#DEVICE /dev/sd[bcdjkl]1 >#DEVICE /dev/hda1 /dev/hdb1 ># ># If you mount devfs on /dev, then a suitable way to list all devices is: >#DEVICE /dev/discs/*/* ># ># ># The AUTO line can control which arrays get assembled by auto-assembly, ># meaing either "mdadm -As" when there are no 'ARRAY' lines in this file, ># or "mdadm --incremental" when the array found is not listed in this file. ># By default, all arrays that are found are assembled. ># If you want to ignore all DDF arrays (maybe they are managed by dmraid), ># and only assemble 1.x arrays if which are marked for 'this' homehost, ># but assemble all others, then use >#AUTO -ddf homehost -1.x +all ># ># ARRAY lines specify an array to assemble and a method of identification. ># Arrays can currently be identified by using a UUID, superblock minor number, ># or a listing of devices. ># ># super-minor is usually the minor number of the metadevice ># UUID is the Universally Unique Identifier for the array ># Each can be obtained using ># ># mdadm -D <md> ># ># Setup to have consistent device names by Lyall Pearce (LRP) ># boot ># Number Major Minor RaidDevice State ># 0 8 33 0 active sync /dev/sdc1 ># 1 8 49 1 active sync /dev/sdd1 >ARRAY /dev/md126 level=raid1 num-devices=2 UUID=057138d3:f4319c05:cb201669:f728008a ># root ># Number Major Minor RaidDevice State ># 0 8 35 0 active sync /dev/sdc3 ># 1 8 51 1 active sync /dev/sdd3 >ARRAY /dev/md127 level=raid1 num-devices=2 UUID=760bc9d5:49950dfb:cb201669:f728008a ># LVM ># Number Major Minor RaidDevice State ># 0 8 36 0 active sync /dev/sdc4 ># 1 8 52 1 active sync /dev/sdd4 >ARRAY /dev/md125 level=raid1 num-devices=2 UUID=2bcdd700:2336cb09:3b2cb14e:f587c0f3 > >#ARRAY /dev/md0 UUID=3aaa0122:29827cfa:5331ad66:ca767371 >#ARRAY /dev/md1 super-minor=1 >#ARRAY /dev/md2 devices=/dev/hda1,/dev/hdb1 ># ># ARRAY lines can also specify a "spare-group" for each array. mdadm --monitor ># will then move a spare between arrays in a spare-group if one array has a failed ># drive but no spare >#ARRAY /dev/md4 uuid=b23f3c6d:aec43a9f:fd65db85:369432df spare-group=group1 >#ARRAY /dev/md5 uuid=19464854:03f71b1b:e0df2edd:246cc977 spare-group=group1 ># ># When used in --follow (aka --monitor) mode, mdadm needs a ># mail address and/or a program. This can be given with "mailaddr" ># and "program" lines to that monitoring can be started using ># mdadm --follow --scan & echo $! > /var/run/mdadm ># If the lines are not found, mdadm will exit quietly >MAILADDR Lyall@The-Pearces.com >#PROGRAM /usr/sbin/handle-mdadm-events
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