2007年10月 9日

LVMお試し on ubuntu

ubuntu-6.06.1-TLS serverで1台作りなおしているリハビリ中。

とても実践的な Linux LVM HOWTOを見ながら、いそいそ(^^;。

# pvscan 
  PV /dev/hda6   VG Ubuntu   lvm2 [74.29 GB / 0    free]
  Total: 1 [74.29 GB] / in use: 1 [74.29 GB] / in no VG: 0 [0   ]
# fdisk /dev/hdb

The number of cylinders for this disk is set to 24321.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
   (e.g., DOS FDISK, OS/2 FDISK)

Command (m for help): p

Disk /dev/hdb: 200.0 GB, 200049647616 bytes
255 heads, 63 sectors/track, 24321 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/hdb1   *           1       24321   195358401   8e  Linux LVM

Command (m for help): q

# pvscan 
  PV /dev/hda6   VG Ubuntu   lvm2 [74.29 GB / 0    free]
  Total: 1 [74.29 GB] / in use: 1 [74.29 GB] / in no VG: 0 [0   ]
# pvcreate /dev/hdb1
  Physical volume "/dev/hdb1" successfully created
# pvscan 
  PV /dev/hda6        VG Ubuntu   lvm2 [74.29 GB / 0    free]
  PV /dev/evms/hdb1               lvm2 [186.31 GB]
  Total: 2 [260.60 GB] / in use: 1 [74.29 GB] / in no VG: 1 [186.31 GB]
# vgcreate home /dev/evms/hdb1
  Volume group "home" successfully created
# vgscan
  Reading all physical volumes.  This may take a while...
  Found volume group "Ubuntu" using metadata type lvm2
  Found volume group "home" using metadata type lvm2
# vgdisplay -v home
    Using volume group(s) on command line
    Finding volume group "home"
  --- Volume group ---
  VG Name               home
  System ID             
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  1
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                0
  Open LV               0
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               186.30 GB
  PE Size               4.00 MB
  Total PE              47694
  Alloc PE / Size       0 / 0   
  Free  PE / Size       47694 / 186.30 GB
  VG UUID               doTZj5-bjAc-Tu1q-FElV-GkSQ-Y17F-2wO4F8
   
  --- Physical volumes ---
  PV Name               /dev/evms/hdb1     
  PV UUID               7lVW1I-bkBd-JqAY-ZmKr-NO87-uuRD-0AVyao
  PV Status             allocatable
  Total PE / Free PE    47694 / 47694
   
# vgdisplay -v Ubuntu
    Using volume group(s) on command line
    Finding volume group "Ubuntu"
  --- Volume group ---
  VG Name               Ubuntu
  System ID             
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  3
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                2
  Open LV               2
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               74.29 GB
  PE Size               4.00 MB
  Total PE              19018
  Alloc PE / Size       19018 / 74.29 GB
  Free  PE / Size       0 / 0   
  VG UUID               6lxjFb-cNTB-JOlT-nKcU-AzuL-qO8P-Ynrp8P
   
  --- Logical volume ---
  LV Name                /dev/Ubuntu/root
  VG Name                Ubuntu
  LV UUID                ZxC1fF-jkzK-kKBq-BdY6-4hfy-06S3-zUmdl7
  LV Write Access        read/write
  LV Status              available
  # open                 1
  LV Size                71.38 GB
  Current LE             18272
  Segments               1
  Allocation             inherit
  Read ahead sectors     0
  Block device           254:0
   
  --- Logical volume ---
  LV Name                /dev/Ubuntu/swap_1
  VG Name                Ubuntu
  LV UUID                qzuY2w-MLmX-u5zj-VU7w-q4sF-IIr9-TR95a9
  LV Write Access        read/write
  LV Status              available
  # open                 2
  LV Size                2.91 GB
  Current LE             746
  Segments               1
  Allocation             inherit
  Read ahead sectors     0
  Block device           254:1
   
  --- Physical volumes ---
  PV Name               /dev/hda6     
  PV UUID               h3VFzZ-Xiaq-MJGN-Zxp9-pyKk-Cp2J-0YpTAG
  PV Status             allocatable
  Total PE / Free PE    19018 / 0
   
# lvcreate -L 75G -n backup home
  Logical volume "backup" created
# lvcreate -L 100G -n shibata home
  Logical volume "shibata" created
# vgdisplay -v home
    Using volume group(s) on command line
    Finding volume group "home"
  --- Volume group ---
  VG Name               home
  System ID             
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  3
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                2
  Open LV               0
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               186.30 GB
  PE Size               4.00 MB
  Total PE              47694
  Alloc PE / Size       44800 / 175.00 GB
  Free  PE / Size       2894 / 11.30 GB
  VG UUID               doTZj5-bjAc-Tu1q-FElV-GkSQ-Y17F-2wO4F8
   
  --- Logical volume ---
  LV Name                /dev/home/backup
  VG Name                home
  LV UUID                IGmFsr-KCJJ-dYB8-Vn7O-fFMB-cbmv-NxyNjq
  LV Write Access        read/write
  LV Status              available
  # open                 0
  LV Size                75.00 GB
  Current LE             19200
  Segments               1
  Allocation             inherit
  Read ahead sectors     0
  Block device           254:7
   
  --- Logical volume ---
  LV Name                /dev/home/shibata
  VG Name                home
  LV UUID                tLrUnV-VRQo-uSUj-dB6N-mTKK-Qh9u-kt0OkV
  LV Write Access        read/write
  LV Status              available
  # open                 0
  LV Size                100.00 GB
  Current LE             25600
  Segments               1
  Allocation             inherit
  Read ahead sectors     0
  Block device           254:8
   
  --- Physical volumes ---
  PV Name               /dev/evms/hdb1     
  PV UUID               7lVW1I-bkBd-JqAY-ZmKr-NO87-uuRD-0AVyao
  PV Status             allocatable
  Total PE / Free PE    47694 / 2894
   
# lvscan
  ACTIVE            '/dev/Ubuntu/root' [71.38 GB] inherit
  ACTIVE            '/dev/Ubuntu/swap_1' [2.91 GB] inherit
  ACTIVE            '/dev/home/backup' [75.00 GB] inherit
  ACTIVE            '/dev/home/shibata' [100.00 GB] inherit
# mke2fs -j /dev/home/backup
mke2fs 1.38 (30-Jun-2005)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
9830400 inodes, 19660800 blocks
983040 blocks (5.00%) reserved for the super user
First data block=0
600 block groups
32768 blocks per group, 32768 fragments per group
16384 inodes per group
Superblock backups stored on blocks: 
        32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 
        4096000, 7962624, 11239424

Writing inode tables: done                            
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 35 mounts or
180 days, whichever comes first.  Use tune2fs -c or -i to override.
# mke2fs -j /dev/home/shibata
mke2fs 1.38 (30-Jun-2005)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
13107200 inodes, 26214400 blocks
1310720 blocks (5.00%) reserved for the super user
First data block=0
800 block groups
32768 blocks per group, 32768 fragments per group
16384 inodes per group
Superblock backups stored on blocks: 
        32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 
        4096000, 7962624, 11239424, 20480000, 23887872

Writing inode tables: done                            
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 30 mounts or
180 days, whichever comes first.  Use tune2fs -c or -i to override.
# ls -l /dev/mapper/
total 0
brw------- 1 root root 254,  0 Oct 10  2007 Ubuntu-root
brw------- 1 root root 254,  1 Oct 10  2007 Ubuntu-swap_1
crw-rw---- 1 root root  10, 63 Oct 10  2007 control
brw------- 1 root root 254,  7 Oct  9 22:56 home-backup
brw------- 1 root root 254,  8 Oct  9 22:58 home-shibata

# cat /etc/fstab 
# /etc/fstab: static file system information.
#
#                
proc            /proc           proc    defaults        0       0
/dev/mapper/Ubuntu-root /               ext3    defaults,errors=remount-ro 0       1
/dev/hda5       /boot           ext3    defaults        0       2
/dev/mapper/Ubuntu-swap_1 none            swap    sw              0       0
/dev/mapper/home-backup /home/backup           ext3    defaults        0       2
/dev/mapper/home-shibata        /home/shibata           ext3    defaults        0       2
/dev/hdc        /media/cdrom0   udf,iso9660 user,noauto     0       0
# mount -t ext2 /dev/mapper/home-shibata /mnt/
# cd /home/shibata/
# ls -la
total 20
drwxr-xr-x 2 shibata shibata 4096 Oct  9 21:25 .
drwxr-xr-x 3 root    root    4096 Oct 10  2007 ..
-rw-r--r-- 1 shibata shibata  220 Oct 10  2007 .bash_logout
-rw-r--r-- 1 shibata shibata  414 Oct 10  2007 .bash_profile
-rw-r--r-- 1 shibata shibata 2227 Oct 10  2007 .bashrc
-rw-r--r-- 1 shibata shibata    0 Oct  9 21:25 .sudo_as_admin_successful
# cp -a .bash* .sudo_as_admin_successful /mnt/
# sync
# ls -la
total 20
drwxr-xr-x 2 shibata shibata 4096 Oct  9 21:25 .
drwxr-xr-x 3 root    root    4096 Oct 10  2007 ..
-rw-r--r-- 1 shibata shibata  220 Oct 10  2007 .bash_logout
-rw-r--r-- 1 shibata shibata  414 Oct 10  2007 .bash_profile
-rw-r--r-- 1 shibata shibata 2227 Oct 10  2007 .bashrc
-rw-r--r-- 1 shibata shibata    0 Oct  9 21:25 .sudo_as_admin_successful
# rm .bash* .sudo_as_admin_successful 
# cd ..
# umount /mnt/
# mount /home/shibata/
# df
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/mapper/Ubuntu-root
                      73667824   1032816  68892904   2% /
varrun                  509708        56    509652   1% /var/run
varlock                 509708         4    509704   1% /var/lock
udev                    509708       128    509580   1% /dev
devshm                  509708         0    509708   0% /dev/shm
/dev/hda5               233303     13738    207118   7% /boot
/dev/mapper/home-shibata
                     103212320    131240  97838200   1% /home/shibata
# mkdir /home/backup
# ls -l
total 8
drwxr-xr-x 2 root root 4096 Oct  9 23:06 backup
drwxr-xr-x 3 root root 4096 Oct  9 23:06 shibata

# sync
# sync
# sync
# shutdown -r now

The system is going down for reboot NOW!om (pts/0) (Tue Oct  9 23:09:23 2007)

さて、リブート後。

$ ssh 192.168.0.xxx
shibata@192.168.0.xxx's password: 表示されず
Linux hcube.uriuri.com 2.6.15-26-server #1 SMP Fri Sep 8 21:00:37 UTC 2006 i686 GNU/Linux

The programs included with the Ubuntu system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted by
applicable law.
Last login: Tue Oct  9 21:32:25 2007 from 192.168.0.yyy
$ df
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/mapper/Ubuntu-root
                      73667824   1031468  68894252   2% /
varrun                  509708        52    509656   1% /var/run
varlock                 509708         4    509704   1% /var/lock
udev                    509708       128    509580   1% /dev
devshm                  509708         0    509708   0% /dev/shm
/dev/hda5               233303     13738    207118   7% /boot
/dev/mapper/home-backup
                      77409288    131228  73345900   1% /home/backup
/dev/mapper/home-shibata
                     103212320    131240  97838200   1% /home/shibata
$ ls -al
total 36
drwxr-xr-x 3 root    root     4096 2007-10-09 23:06 .
drwxr-xr-x 4 root    root     4096 2007-10-09 23:06 ..
-rw-r--r-- 1 shibata shibata   220 2007-10-10 06:24 .bash_logout
-rw-r--r-- 1 shibata shibata   414 2007-10-10 06:24 .bash_profile
-rw-r--r-- 1 shibata shibata  2227 2007-10-10 06:24 .bashrc
-rw-r--r-- 1 shibata shibata     0 2007-10-09 21:25 .sudo_as_admin_successful
drwx------ 2 root    root    16384 2007-10-09 23:00 lost+found

投稿者 his : 2007年10月 9日 22:46
このエントリーのトラックバックURL: http://hoop.euqset.org/blog/mt-tb2006.cgi/65004
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