wiki:TipAndDoc/storage/filesystem

Version 1 (modified by mitty, 15 years ago) (diff)

--

  1. resizing
    1. testing xfs_growfs
      1. expanding /dev/sdb1
      2. test with 3 partitions
        1. /dev/sdb2をdisk後方に向けて拡張
        2. /dev/sdb2をdisk前方に向けて拡張
          1. remake partition with name sdb1
          2. remake partition with name sdb2
          3. overwrite sdb1 with 0x00 and remake partition

resizing

testing xfs_growfs

expanding /dev/sdb1

  1. mkfs
    • sudo fdisk /dev/sdb -l 
      Disk /dev/sdb: 4294 MB, 4294967296 bytes
255 heads, 63 sectors/track, 522 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

Disk /dev/sdb doesn't contain a valid partition table
    • sudo fdisk /dev/sdb 
      Command (m for help): n
Command action
   e   extended
   p   primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-522, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-522, default 522): +1G

/dev/sdb1               1         132     1060258+  83  Linux
    • sudo mkfs.xfs /dev/sdb1 
      meta-data=/dev/sdb1              isize=256    agcount=4, agsize=66266 blks
         =                       sectsz=512   attr=2
data     =                       bsize=4096   blocks=265064, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0
log      =internal log           bsize=4096   blocks=2560, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
    • sudo blkid /dev/sdb1 
      /dev/sdb1: UUID="e47dbfff-97ca-43b8-9a29-89700956a7dd" TYPE="xfs"
  2. mount
    • sudo mkdir /mnt/sdb1
    • sudo mount /dev/sdb1 /mnt/sdb1
    • df /mnt/sdb1/ -h 
      /dev/sdb1             1.1G  4.2M 1022M   1% /mnt/sdb1
  3. テストデータの用意
    • sudo dd if=/dev/urandom of=/mnt/sdb1/rand.10M bs=1024 count=10240
    • cp /mnt/sdb1/rand.10M .
  4. remake partition
    • sudo umount /mnt/sdb1/
    • sudo fdisk /dev/sdb 
      Command (m for help): d
Selected partition 1

Command (m for help): n
Command action
   e   extended
   p   primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-522, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-522, default 522):
Using default value 522

/dev/sdb1               1         522     4192933+  83  Linux
    • sudo blkid /dev/sdb1 
      /dev/sdb1: UUID="e47dbfff-97ca-43b8-9a29-89700956a7dd" TYPE="xfs"
    • sudo mount /dev/sdb1 /mnt/sdb1
    • df /mnt/sdb1/ -h 
      /dev/sdb1             1.1G   15M 1012M   2% /mnt/sdb1
    • sha1sum -b rand.10M /mnt/sdb1/rand.10M 
      72d3a67ecd23e77bbc57eb959b945c6cbdae58e1 *rand.10M
72d3a67ecd23e77bbc57eb959b945c6cbdae58e1 */mnt/sdb1/rand.10M
  5. resize xfs filesystem
    • sudo xfs_growfs /mnt/sdb1/ 
      meta-data=/dev/sdb1              isize=256    agcount=4, agsize=66266 blks
         =                       sectsz=512   attr=2
data     =                       bsize=4096   blocks=265064, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0
log      =internal               bsize=4096   blocks=2560, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
data blocks changed from 265064 to 1048233
    • df /mnt/sdb1/ -h 
      Filesystem            Size  Used Avail Use% Mounted on
/dev/sdb1             4.0G   15M  4.0G   1% /mnt/sdb1
    • sha1sum -b rand.10M /mnt/sdb1/rand.10M 
      72d3a67ecd23e77bbc57eb959b945c6cbdae58e1 *rand.10M
72d3a67ecd23e77bbc57eb959b945c6cbdae58e1 */mnt/sdb1/rand.10M
  • 問題なく拡張された

test with 3 partitions

  1. make partitions
    • sudo fdisk /dev/sdb
      • snip
    • sudo fdisk /dev/sdb -l 
      /dev/sdb1               1         132     1060258+  83  Linux
/dev/sdb2             133         394     2104515   83  Linux
/dev/sdb3             395         522     1028160   83  Linux
  2. mkfs
    • sudo mkfs.xfs /dev/sdb1 
      meta-data=/dev/sdb1              isize=256    agcount=4, agsize=66266 blks
         =                       sectsz=512   attr=2
data     =                       bsize=4096   blocks=265064, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0
log      =internal log           bsize=4096   blocks=2560, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
    • sudo mkfs.xfs /dev/sdb2 
      meta-data=/dev/sdb2              isize=256    agcount=4, agsize=131532 blks
         =                       sectsz=512   attr=2
data     =                       bsize=4096   blocks=526128, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0
log      =internal log           bsize=4096   blocks=2560, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
    • sudo mkfs.xfs /dev/sdb3 
      meta-data=/dev/sdb3              isize=256    agcount=4, agsize=64260 blks
         =                       sectsz=512   attr=2
data     =                       bsize=4096   blocks=257040, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0
log      =internal log           bsize=4096   blocks=1200, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
    • sudo blkid /dev/sdb[123] 
      /dev/sdb1: UUID="9065c3c2-ab3d-4460-978e-e37c88f31f5f" TYPE="xfs"
/dev/sdb2: UUID="b9515b82-4d3c-457d-8d32-330cfea692df" TYPE="xfs"
/dev/sdb3: UUID="17374506-2cb1-4451-a5a8-b15cb1410870" TYPE="xfs"
  3. mount
    • sudo mkdir /mnt/sdb1
    • sudo mkdir /mnt/sdb2
    • sudo mkdir /mnt/sdb3
    • sudo mount /dev/sdb1 /mnt/sdb1
    • sudo mount /dev/sdb2 /mnt/sdb2
    • sudo mount /dev/sdb3 /mnt/sdb3
    • df -h 
      /dev/sdb1             1.1G  4.2M 1022M   1% /mnt/sdb1
/dev/sdb2             2.0G  4.2M  2.0G   1% /mnt/sdb2
/dev/sdb3            1000M  4.2M  996M   1% /mnt/sdb3
  4. テストデータの用意
    • sudo dd if=/dev/urandom of=/mnt/sdb1/rand1.10M bs=1024 count=10240
    • sudo dd if=/dev/urandom of=/mnt/sdb2/rand2.10M bs=1024 count=10240
    • sudo dd if=/dev/urandom of=/mnt/sdb3/rand3.10M bs=1024 count=10240
    • sha1sum -b /mnt/sdb*/rand*.10M 
      11b2836d9c88f3890224f5d4250e2dd86ddca3e6 */mnt/sdb1/rand1.10M
3b2fb16c6416b5c6314c396f03275fd20ff8f24b */mnt/sdb2/rand2.10M
0fb674e54da58858fa1a825f724f5e0c782a8a04 */mnt/sdb3/rand3.10M

/dev/sdb2をdisk後方に向けて拡張

  1. remake partition
    • sudo umount /dev/sdb[123]
    • sudo fdisk /dev/sdb 
      /dev/sdb1               1         132     1060258+  83  Linux
/dev/sdb2             133         394     2104515   83  Linux
/dev/sdb3             395         522     1028160   83  Linux

Command (m for help): d
Partition number (1-4): 3

Command (m for help): d
Partition number (1-4): 2

Command (m for help): n
Command action
   e   extended
   p   primary partition (1-4)
p
Partition number (1-4): 2
First cylinder (133-522, default 133):
Using default value 133
Last cylinder, +cylinders or +size{K,M,G} (133-522, default 522):
Using default value 522

/dev/sdb1               1         132     1060258+  83  Linux
/dev/sdb2             133         522     3132675   83  Linux
  2. resize xfs filesystem
    • sudo mount /dev/sdb2 /mnt/sdb2
    • df -h 
      /dev/sdb2             2.0G   15M  2.0G   1% /mnt/sdb2
    • sha1sum -b /mnt/sdb*/rand*.10M 
      3b2fb16c6416b5c6314c396f03275fd20ff8f24b */mnt/sdb2/rand2.10M
    • sudo xfs_growfs /mnt/sdb2/ 
      meta-data=/dev/sdb2              isize=256    agcount=4, agsize=131532 blks
         =                       sectsz=512   attr=2
data     =                       bsize=4096   blocks=526128, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0
log      =internal               bsize=4096   blocks=2560, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
data blocks changed from 526128 to 783168
    • sudo blkid /dev/sdb[123] 
      /dev/sdb1: UUID="9065c3c2-ab3d-4460-978e-e37c88f31f5f" TYPE="xfs"
/dev/sdb2: UUID="b9515b82-4d3c-457d-8d32-330cfea692df" TYPE="xfs"
    • df -h 
      /dev/sdb2             3.0G   15M  3.0G   1% /mnt/sdb2
  • 問題なく拡張された

/dev/sdb2をdisk前方に向けて拡張

remake partition with name sdb1
  • sudo umount /dev/sdb[123]
  • sudo fdisk /dev/sdb 
    /dev/sdb1               1         132     1060258+  83  Linux
/dev/sdb2             133         522     3132675   83  Linux


Command (m for help): d
Partition number (1-4): 1

Command (m for help): d
Selected partition 2

Command (m for help): n
Command action
   e   extended
   p   primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-522, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-522, default 522):
Using default value 522


/dev/sdb1               1         522     4192933+  83  Linux
  • sudo mount /dev/sdb1 /mnt/sdb1
  • sha1sum -b /mnt/sdb*/rand*.10M 
    11b2836d9c88f3890224f5d4250e2dd86ddca3e6 */mnt/sdb1/rand1.10M
  • 当然だがsdb2ではなくsdb1がmountされてしまう
remake partition with name sdb2
  • sudo umount /dev/sdb[123]
  • sudo fdisk /dev/sdb 
    /dev/sdb1               1         522     4192933+  83  Linux

Command (m for help): d
Selected partition 1

Command (m for help): n
Command action
   e   extended
   p   primary partition (1-4)
p
Partition number (1-4): 2
First cylinder (1-522, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-522, default 522):
Using default value 522

/dev/sdb2               1         522     4192933+  83  Linux
  • sudo mount /dev/sdb2 /mnt/sdb2
  • sha1sum -b /mnt/sdb*/rand*.10M 
    11b2836d9c88f3890224f5d4250e2dd86ddca3e6 */mnt/sdb2/rand1.10M
  • やはりsdb1の内容がmountされる
overwrite sdb1 with 0x00 and remake partition
  • sudo umount /dev/sdb[123]
  • sudo fdisk /dev/sdb 
    /dev/sdb2               1         522     4192933+  83  Linux


Command (m for help): d
Selected partition 2

Command (m for help): n
Command action
   e   extended
   p   primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-522, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-522, default 522): 132

Command (m for help): n
Command action
   e   extended
   p   primary partition (1-4)
p
Partition number (1-4): 2
First cylinder (133-522, default 133):
Using default value 133
Last cylinder, +cylinders or +size{K,M,G} (133-522, default 522):
Using default value 522

/dev/sdb1               1         132     1060258+  83  Linux
/dev/sdb2             133         522     3132675   83  Linux
  • sudo dd if=/dev/zero of=/dev/sdb1 bs=1024 count=10240
  • sudo mount /dev/sdb1 /mnt/sdb1 -t xfs 
    [ 8848.630996] XFS: bad magic number
[ 8848.630996] XFS: SB validate failed
  • sudo mount /dev/sdb2 /mnt/sdb2
  • sha1sum -b /mnt/sdb*/rand*.10M 
    3b2fb16c6416b5c6314c396f03275fd20ff8f24b */mnt/sdb2/rand2.10M
  • sudo umount /dev/sdb[123]
  • sudo fdisk /dev/sdb 
    /dev/sdb1               1         132     1060258+  83  Linux
/dev/sdb2             133         522     3132675   83  Linux

Command (m for help): d
Partition number (1-4): 1

Command (m for help): d
Selected partition 2

Command (m for help): n
Command action
   e   extended
   p   primary partition (1-4)
p
Partition number (1-4): 2
First cylinder (1-522, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-522, default 522):
Using default value 522


/dev/sdb2               1         522     4192933+  83  Linux
  • sudo mount /dev/sdb2 /mnt/sdb2 -t xfs 
    [ 9060.520973] XFS: bad magic number
[ 9060.520973] XFS: SB validate failed
  • 全くmount出来なくなる