04-22-2013
Ok after some more reading, I tried this:
Quote:
mdadm --create /dev/md8 --verbose --level=5 --raid-devices=4 /dev/sda /dev/sdb /dev/sdc missing
and got this:
Quote:
mdadm: layout defaults to left-symmetric
mdadm: chunk size defaults to 512K
mdadm: layout defaults to left-symmetric
mdadm: layout defaults to left-symmetric
mdadm: super1.x cannot open /dev/sda: Device or resource busy
mdadm: failed container membership check
mdadm: device /dev/sda not suitable for any style of array
aaaghhh!!!
---------- Post updated at 10:17 PM ---------- Previous update was at 10:13 PM ----------
also...
Quote:
$ sudo cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md8 : inactive sda[0] sdc[2] sdb[1]
8790796680 blocks super 1.2
---------- Post updated at 10:29 PM ---------- Previous update was at 10:17 PM ----------
also:
Quote:
$ sudo mdadm --detail /dev/md8
/dev/md8:
Version : 1.2
Creation Time : Mon Jan 7 11:03:39 2013
Raid Level : raid5
Used Dev Size : -1
Raid Devices : 4
Total Devices : 3
Persistence : Superblock is persistent
Update Time : Sat Apr 6 13:17:10 2013
State : active, degraded, Not Started
Active Devices : 3
Working Devices : 3
Failed Devices : 0
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 512K
Name : TTVServer:TTV2 (local to host TTVServer)
UUID : dc344271:82f55bd0:fcfd0e16:a2a60bc8
Events : 103
Number Major Minor RaidDevice State
0 8 0 0 active sync /dev/sda
1 8 16 1 active sync /dev/sdb
2 8 32 2 active sync /dev/sdc
3 0 0 3 removed
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LEARN ABOUT OSX
vgimportclone
VGIMPORTCLONE(8) System Manager's Manual VGIMPORTCLONE(8)
NAME
vgimportclone - import and rename duplicated volume group (e.g. a hardware snapshot)
SYNOPSIS
vgimportclone [-n|--basevgname VolumeGroupName] [-i|--import] PhysicalVolume [PhysicalVolume...]
DESCRIPTION
vgimportclone is used to import a duplicated VG (e.g. hardware snapshot). Duplicate VG(s) and PV(s) are not able to be used until they are
made to coexist with the origin VG(s) and PV(s). vgimportclone renames the VG associated with the specified PV(s) and changes the associ-
ated VG and PV UUIDs.
OPTIONS
See lvm for common options.
-n|--basevgname VolumeGroupName
By default the snapshot VG will be renamed to the original name plus a numeric suffix to avoid duplicate naming (e.g. 'test_vg'
would be renamed to 'test_vg1'). This option will override the base VG name that is used for all VG renames. If a VG already
exists with the specified name a numeric suffix will be added (like the previous example) to make it unique.
-i|--import
Import exported Volume Groups. Otherwise VGs that have been exported will not be changed (nor will their associated PVs).
ENVIRONMENT VARIABLES
LVM_BINARY
The LVM2 binary to use. Defaults to "lvm".
EXAMPLES
The origin VG vg00 has origin PVs /dev/sda and /dev/sdb and the respective snapshot PVs are /dev/sdc and /dev/sdd. To rename the VG asso-
ciated with /dev/sdc and /dev/sdd from vg00 to vg00_snap (and to change associated VG and PV UUIDs) do:
vgimportclone --basevgname vg00_snap /dev/sdc /dev/sdd
SEE ALSO
lvm(8)
Red Hat, Inc. LVM TOOLS 2.02.95(2) (2012-03-06) VGIMPORTCLONE(8)