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**mintのディスクをgingerへ移す（2016-01-22） [#s312d70b]
mintから引っこ抜いて、gingerへ挿す。
gingerを立ち上げる。dmesgを見て、SATAがどのデバイスに割り振られたか確認する。
# dmesg | grep sd
[ 12.069533] sd 4:0:0:0: [sda] 5860533168 512-byte logical blocks: (3.00 TB/2.72 TiB)
[ 12.069540] sd 4:0:0:0: [sda] 4096-byte physical blocks
[ 12.069579] sd 4:0:0:0: [sda] Write Protect is off
[ 12.069583] sd 4:0:0:0: [sda] Mode Sense: 00 3a 00 00
[ 12.069599] sd 4:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 12.069659] sd 5:0:0:0: [sdb] 5860533168 512-byte logical blocks: (3.00 TB/2.72 TiB)
[ 12.069665] sd 5:0:0:0: [sdb] 4096-byte physical blocks
[ 12.069677] sd 6:0:0:0: [sdc] 3907029168 512-byte logical blocks: (2.00 TB/1.81 TiB) <=== これだ
[ 12.069681] sd 6:0:0:0: [sdc] 4096-byte physical blocks
[ 12.069714] sd 5:0:0:0: [sdb] Write Protect is off
[ 12.069718] sd 5:0:0:0: [sdb] Mode Sense: 00 3a 00 00
[ 12.069721] sd 6:0:0:0: [sdc] Write Protect is off
[ 12.069724] sd 6:0:0:0: [sdc] Mode Sense: 00 3a 00 00
[ 12.069736] sd 6:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 12.069743] sd 5:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 12.119393] sda: sda1 sda2 sda3
[ 12.119715] sd 4:0:0:0: [sda] Attached SCSI disk
[ 12.122464] sdb: sdb1
[ 12.122724] sd 5:0:0:0: [sdb] Attached SCSI disk
[ 12.685184] sdc: sdc1 sdc2
[ 12.685918] sd 6:0:0:0: [sdc] Attached SCSI disk
[ 19.124306] XFS (sda2): Mounting V4 Filesystem
[ 19.892988] XFS (sda2): Ending clean mount
[ 19.893040] SELinux: initialized (dev sda2, type xfs), uses xattr
[ 909.934717] EXT4-fs (sdc1): mounted filesystem with ordered data mode. Opts: (null)
[ 909.945286] SELinux: initialized (dev sdc1, type ext4), uses xattr
/dev/sdcになっていて、sdc1とsdc2があることを確認。当然、scd1がブートパーティション）でscd2がルートだろう。
で、これをマウントしてみる。
# mount /dev/sdc2 /mnt
mount: unknown filesystem type 'LVM2_member'
Logical Volumeの一部ということで、よくわからない。LVの扱いは初めてなので手探り。
[[特集：LVMによるディスクパーティションの動的化（後編） (3/5):http://www.itmedia.co.jp/enterprise/0308/08/epn01_3.html]] あたりを覗きながら、様子を見る。
# vgdisplay -v
Using volume group(s) on command line.
Finding all volume groups.
--- Volume group ---
VG Name vg_mint
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 4
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 3
Open LV 0
Max PV 0
Cur PV 1
Act PV 1
VG Size 1.82 TiB
PE Size 4.00 MiB
Total PE 476806
Alloc PE / Size 476806 / 1.82 TiB
Free PE / Size 0 / 0
VG UUID 8vfrMa-FLD5-vV1H-7pmZ-8xWv-QuAP-U8sRQH
--- Logical volume ---
LV Path /dev/vg_mint/lv_root
LV Name lv_root
VG Name vg_mint
LV UUID WffYoG-I8gu-3YbP-PAtA-HBt0-2t96-V40Wh6
LV Write Access read/write
LV Creation host, time mint.yy.is.sci.toho-u.ac.jp, 2012-11-03 15:09:30 +0900
LV Status available
# open 0
LV Size 50.00 GiB
Current LE 12800
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:3
--- Logical volume ---
LV Path /dev/vg_mint/lv_home
LV Name lv_home
VG Name vg_mint
LV UUID ANQ9Aj-KnK2-Qm0O-oRpY-LXtF-6ntS-7S5Y2o
LV Write Access read/write
LV Creation host, time mint.yy.is.sci.toho-u.ac.jp, 2012-11-03 15:09:40 +0900
LV Status available
# open 0
LV Size 1.74 TiB
Current LE 455936
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:4
--- Logical volume ---
LV Path /dev/vg_mint/lv_swap
LV Name lv_swap
VG Name vg_mint
LV UUID 3GTfzv-4nwy-1dlJ-iqf3-W0lV-Qfoo-EA5JbS
LV Write Access read/write
LV Creation host, time mint.yy.is.sci.toho-u.ac.jp, 2012-11-03 15:15:56 +0900
LV Status available
# open 0
LV Size 31.52 GiB
Current LE 8070
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:5
--- Physical volumes ---
PV Name /dev/sdc2
PV UUID XHdEPC-03dq-xioj-sVfG-VjuP-cDEJ-RbEie5
PV Status allocatable
Total PE / Free PE 476806 / 0
--- Volume group ---
VG Name centos
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 4
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 3
Open LV 3
Max PV 0
Cur PV 2
Act PV 2
VG Size 5.46 TiB
PE Size 4.00 MiB
Total PE 1430667
Alloc PE / Size 1430652 / 5.46 TiB
Free PE / Size 15 / 60.00 MiB
VG UUID sIIgyo-VBgW-Dphb-CQcw-tQ1W-RxFB-kkMzAO
--- Logical volume ---
LV Path /dev/centos/swap
LV Name swap
VG Name centos
LV UUID eFQ5ZW-3p8V-kIZu-33bO-QGDx-9eiL-V6W00A
LV Write Access read/write
LV Creation host, time ginger.yy.is.sci.toho-u.ac.jp, 2015-12-15 09:22:50 +0900
LV Status available
# open 2
LV Size 4.00 GiB
Current LE 1024
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:1
--- Logical volume ---
LV Path /dev/centos/home
LV Name home
VG Name centos
LV UUID ppoQV0-pblD-zRMT-mHyS-tPnq-uojL-Ac0Fpp
LV Write Access read/write
LV Creation host, time ginger.yy.is.sci.toho-u.ac.jp, 2015-12-15 09:22:50 +0900
LV Status available
# open 1
LV Size 5.40 TiB
Current LE 1416828
Segments 2
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:2
--- Logical volume ---
LV Path /dev/centos/root
LV Name root
VG Name centos
LV UUID LjLDIh-Vvf2-OJCx-cmgd-W6bk-Q1T4-vhvHC6
LV Write Access read/write
LV Creation host, time ginger.yy.is.sci.toho-u.ac.jp, 2015-12-15 09:23:04 +0900
LV Status available
# open 1
LV Size 50.00 GiB
Current LE 12800
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0
--- Physical volumes ---
PV Name /dev/sda3
PV UUID Y2Jchq-M6IK-5RKA-5OJX-rU4q-qtPh-PzqMUJ
PV Status allocatable
Total PE / Free PE 715271 / 15
PV Name /dev/sdb1
PV UUID lbQ84v-TRy2-y6HH-6K6I-exiU-EnD6-VO58f6
PV Status allocatable
Total PE / Free PE 715396 / 0
ということで、mintの
ということで、非常にラッキーだったのは、mintから抜いてきたディスクのVolumeGroup名がmintで、gingerをインストールした方のディスクはVolumeGroup名がCentosになっていたこと。同じだったらかなりやばいのかも。
# mount /dev/sdc2 /mnt
というところで、ロジカルボリューム/dev/vg_mint/lv_rootと/dev/vg_mint/lv_homeを使えばいいということらしい。
# mount /dev/vg_mint/lv_home /mnt/mint_home
# ls /mnt/mint_home
<正しいユーザホーム>
# mount /dev/vg_mint/lv_root /mnt/mint_root
# ls /mnt/mint_root
bin cgroup etc lib lost+found misc net proc sbin srv tmp var
boot dev home lib64 media mnt opt root selinux sys usr
というわけで、見られるようになった。
![[Toho University]](image/CLogo_Kihon_process.jpg "[Toho University]")
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