綾小路龍之介の素人思考

[linux] HDD に GPT パーティション作成、reserved block count を 0 で ext4 フォーマット

今後のデータ用ディスクのパーティションおよびフォーマット方針として「gpt パーティション、reserved block count を 0 で ext4 フォーマット」にする。

fdisk -l で最初に新しいディスクのパーティションを確認。今のところパーティションはない。

# fdisk -l /dev/sdz

Disk /dev/sdz: 3000.6 GB, 3000592982016 bytes
255 heads, 63 sectors/track, 364801 cylinders, total 5860533168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000

Disk /dev/sdz doesn't contain a valid partition table

parted でパーティションを作成、fdisk -l で確認。

# parted /dev/sdz
GNU Parted 2.3
Using /dev/sdz
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) mklabel gpt
(parted) unit s
(parted) mkpart primary ext3 2048s -1s
Warning: You requested a partition from 2048s to 5860533167s.
The closest location we can manage is 2048s to 5860533134s.
Is this still acceptable to you?
Yes/No? Yes
(parted) align-check optimal 1
1 aligned
(parted) print
Model: ATA WDC WD30EZRX-00D (scsi)
Disk /dev/sdz: 5860533168s
Sector size (logical/physical): 512B/4096B
Partition Table: gpt

Number  Start  End          Size         File system  Name     Flags
 1      2048s  5860533134s  5860531087s               primary

(parted) quit
Information: You may need to update /etc/fstab.

# fdisk -l /dev/sdz

WARNING: GPT (GUID Partition Table) detected on '/dev/sdz'! The util fdisk doesn't support GPT. Use GNU Parted.


Disk /dev/sdz: 3000.6 GB, 3000592982016 bytes
255 heads, 63 sectors/track, 364801 cylinders, total 5860533168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sdz1               1  4294967295  2147483647+  ee  GPT
Partition 1 does not start on physical sector boundary.

mkfs で ext4 フォーマット。その際 reserved block count を 0 にするためにオプション -m 0 を使用。結果は以下。3TBのディスクフォーマットで4.5日程度かかるがこれはmkfs に -c オプションを2回渡すことで破壊的読み書きテストを行っているため。

# time mkfs -t ext4 -m 0 -c -c /dev/sdz1
mke2fs 1.42.5 (29-Jul-2012)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
183148544 inodes, 732566385 blocks
0 blocks (0.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=0
22357 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
        32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
        4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
        102400000, 214990848, 512000000, 550731776, 644972544

Testing with pattern 0xaa: done
Reading and comparing: done
Testing with pattern 0x55: done
Reading and comparing: done
Testing with pattern 0xff: done
Reading and comparing: done
Testing with pattern 0x00: done
Reading and comparing: done
Allocating group tables: done
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done


real    6395m49.439s
user    663m8.803s
sys     478m38.259s

作成したパーティションの詳細な結果を見るには dumpe2fs -h を使う。ext4 の新機能として "huge_file uninit_bg dir_nlink extra_isize" が追加されていることが分かる。

# dumpe2fs -h /dev/sdz1
dumpe2fs 1.42.5 (29-Jul-2012)
Filesystem volume name:   <none>
Last mounted on:          <not available>
Filesystem UUID:          ********-****-****-****-************
Filesystem magic number:  0xEF53
Filesystem revision #:    1 (dynamic)
Filesystem features:      has_journal ext_attr resize_inode dir_index filetype extent flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize
Filesystem flags:         signed_directory_hash
Default mount options:    user_xattr acl
Filesystem state:         clean
Errors behavior:          Continue
Filesystem OS type:       Linux
Inode count:              183148544
Block count:              732566385
Reserved block count:     0
Free blocks:              721019563
Free inodes:              183148533
First block:              0
Block size:               4096
Fragment size:            4096
Reserved GDT blocks:      849
Blocks per group:         32768
Fragments per group:      32768
Inodes per group:         8192
Inode blocks per group:   512
Flex block group size:    16
Filesystem created:       ************************
Last mount time:          n/a
Last write time:          ************************
Mount count:              0
Maximum mount count:      -1
Last checked:             ************************
Check interval:           0 (<none>)
Lifetime writes:          137 MB
Reserved blocks uid:      0 (user root)
Reserved blocks gid:      0 (group root)
First inode:              11
Inode size:               256
Required extra isize:     28
Desired extra isize:      28
Journal inode:            8
Default directory hash:   half_md4
Directory Hash Seed:      ********-****-****-****-************
Journal backup:           inode blocks
Journal features:         journal_incompat_revoke
Journal size:             128M
Journal length:           32768
Journal sequence:         **********
Journal start:            0
#  hdparm -i /dev/sdz

/dev/sdz:

 Model=WDC WD30EZRX-00D8PB0, FwRev=80.00A80, SerialNo=***************
 Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=0
 BuffType=unknown, BuffSize=unknown, MaxMultSect=16, MultSect=16
 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=5860533168
 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes:  pio0 pio3 pio4
 DMA modes:  mdma0 mdma1 mdma2
 UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5 udma6
 AdvancedPM=no WriteCache=enabled
 Drive conforms to: Unspecified:  ATA/ATAPI-1,2,3,4,5,6,7

 * signifies the current active mode

# hdparm -Tt /dev/sdz

/dev/sdz:
 Timing cached reads:   320 MB in  2.00 seconds = 159.93 MB/sec
 Timing buffered disk reads: 168 MB in  3.00 seconds =  55.95 MB/sec

最後に自動マウントの設定と、マウントポイントの作成、オーナーの変更、確認。

# cat <<EOT >> /etc/fstab
UUID=XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX       /path/to/mount/point       ext4    defaults        0       1
EOT
# mount /path/to/mount/point
# chown ******:****** /path/to/mount/point
# df -haT /dev/sdz1
Filesystem     Type  Size  Used Avail Use% Mounted on
/dev/sdz1      ext4  2.7T  201M  2.7T   1% /path/to/mount/point

以下は 4TB の HDD について同じ処理を行った結果。

# parted /dev/sdz
GNU Parted 2.3
Using /dev/sdz
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) mklabel gpt
(parted) unit s
(parted) mkpart primary ext4 2048s -1s
Warning: You requested a partition from 2048s to 7814037167s.
The closest location we can manage is 2048s to 7814037134s.
Is this still acceptable to you?
Yes/No? Yes
(parted) align-check optimal 1
1 aligned
(parted) print
Model: ATA WDC WD40EZRX-00S (scsi)
Disk /dev/sdz: 7814037168s
Sector size (logical/physical): 512B/4096B
Partition Table: gpt

Number  Start  End          Size         File system  Name     Flags
 1      2048s  7814037134s  7814035087s               primary

(parted) quit
Information: You may need to update /etc/fstab.

# fdisk -l /dev/sdz

WARNING: GPT (GUID Partition Table) detected on '/dev/sdz'! The util fdisk doesn't support GPT. Use GNU Parted.


Disk /dev/sdz: 4000.8 GB, 4000787030016 bytes
255 heads, 63 sectors/track, 486401 cylinders, total 7814037168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sdz1               1  4294967295  2147483647+  ee  GPT
Partition 1 does not start on physical sector boundary.

そして時間のかかる mkfs。1回Testing with patternとReading and comparingが走るのにそれぞれ18時間と19時間程度かかる。これが4回走るので(18+19)*4=148時間程度かかる見込み。timeで計測した実際の時間は145時間でおよそ6日かかったことになる。

# time mkfs -t ext4 -m 0 -c -c /dev/sdz1
mke2fs 1.42.5 (29-Jul-2012)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
244195328 inodes, 976754385 blocks
0 blocks (0.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=0
29809 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
        32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
        4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
        102400000, 214990848, 512000000, 550731776, 644972544

Testing with pattern 0xaa: done
Reading and comparing: done
Testing with pattern 0x55: done
Reading and comparing: done
Testing with pattern 0xff: done
Reading and comparing: done
Testing with pattern 0x00: done
Reading and comparing: done
Allocating group tables: done
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done


real    8708m22.778s
user    1087m26.046s
sys     485m23.320s
# echo $?
0

mkfs 中の vmstat の結果が以下。

$ vmstat 300
(snip)
procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
 r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa
 1  1      0 121468  91048 3303356    0    0     2 58423  732  987 70 20  0 10
 1  1      0 115816  90012 3334652    0    0     5 58891  709 1041 49 18  0 33
 1  1      0 143880  79868 3295104    0    0    73 58851  723 1063 49 18  0 33
 1  1      0 114500  74248 3350636    0    0     3 58599  736  984 70 20  0 10
 1  1      0 118932  67380 3358068    0    0     2 59290  683  999 48 16  0 37
 0  1      0 117016  63260 3336560    0    0     5 58941  721 1015 55 18  0 28
 1  1      0 119700  62052 3363232    0    0     4 58721  737 1005 66 20  0 15
 1  1      0 117296  60032 3363784    0    0     3 59211  669  985 49 17  0 34
 1  1      0 120072  59808 3363756    0    0 43948 17247  731  946 75 21  0  5
 2  1      0 121908  59696 3364456    0    0 62359   584  717  975 62 18  0 19
 1  1      0 118120  59588 3363604    0    0 62298   596  756  959 76 21  0  4
 1  1      0 115036  58860 3366628    0    0 62315   606  717  984 60 18  0 22
 1  1      0 121344  57752 3365624    0    0 62197   666  758  963 75 21  0  4
 0  1      0 113384  57300 3346352    0    0 62182   653  741  983 65 20  0 16
 2  1      0 115436  56176 3367688    0    0 61978   738  760  989 68 21  0 11
 1  1      0 118448  55504 3367652    0    0 61925   720  768  970 75 22  0  4
 1  0      0 115756  53660 3370220    0    0 61412   896  751 1031 57 19  0 24
 1  1      0 119312  50964 3372976    0    0 61665   875  771  977 74 23  0  3
(snip)

結構負荷の高いマシンでやるとフォーマット時間が伸びた

原因追求のためにHDDの接続もとも確認しておこう。/dev/sdz の接続先 (00:07.0) を確認して、lspci で確認。玄人志向の SATA4P-PCI 使ってるので、チップセット的 (SiI 3114) には対応取れてるから多分おk。

$ /sbin/udevadm info --query=all --name=/dev/sdz
P: /devices/pci0000:00/0000:00:07.0/host4/target4:0:0/4:0:0:0/block/sdz
N: sdz
S: disk/by-id/ata-WDC_WD30EZRX-XXXXXXXXXXXXXXXXXXXXXXX
S: disk/by-id/scsi-SATA_WDC_WD30EZRX-XXXXXXXXXXXXXXXXXX
S: disk/by-id/wwn-XXXXXXXXXXXXXXXXXX
S: disk/by-path/pci-0000:00:07.0-scsi-0:0:0:0
E: DEVLINKS=/dev/disk/by-id/ata-WDC_WD30EZRX-XXXXXXXXXXXXXXXXXXXXXXX /dev/disk/by-id/scsi-SATA_WDC_WD30EZRX-XXXXXXXXXXXXXXXXXX /dev/disk/by-id/wwn-XXXXXXXXXXXXXXXXXX /dev/disk/by-path/pci-0000:00:07.0-scsi-0:0:0:0
E: DEVNAME=/dev/sdz
E: DEVPATH=/devices/pci0000:00/0000:00:07.0/host4/target4:0:0/4:0:0:0/block/sdz
E: DEVTYPE=disk
E: ID_ATA=1
E: ID_ATA_DOWNLOAD_MICROCODE=1
E: ID_ATA_FEATURE_SET_HPA=1
E: ID_ATA_FEATURE_SET_HPA_ENABLED=1
E: ID_ATA_FEATURE_SET_PM=1
E: ID_ATA_FEATURE_SET_PM_ENABLED=1
E: ID_ATA_FEATURE_SET_PUIS=1
E: ID_ATA_FEATURE_SET_PUIS_ENABLED=0
E: ID_ATA_FEATURE_SET_SECURITY=1
E: ID_ATA_FEATURE_SET_SECURITY_ENABLED=0
E: ID_ATA_FEATURE_SET_SECURITY_ENHANCED_ERASE_UNIT_MIN=450
E: ID_ATA_FEATURE_SET_SECURITY_ERASE_UNIT_MIN=450
E: ID_ATA_FEATURE_SET_SMART=1
E: ID_ATA_FEATURE_SET_SMART_ENABLED=1
E: ID_ATA_ROTATION_RATE_RPM=5400
E: ID_ATA_SATA=1
E: ID_ATA_SATA_SIGNAL_RATE_GEN1=1
E: ID_ATA_SATA_SIGNAL_RATE_GEN2=1
E: ID_ATA_WRITE_CACHE=1
E: ID_ATA_WRITE_CACHE_ENABLED=1
E: ID_BUS=ata
E: ID_MODEL=WDC_WD30EZRX-XXXXXXX
E: ID_MODEL_ENC=WDC\x20WD30EZRX-XXXXXXX\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20
E: ID_PART_TABLE_TYPE=gpt
E: ID_PATH=pci-0000:00:07.0-scsi-0:0:0:0
E: ID_PATH_TAG=pci-0000_00_07_0-scsi-0_0_0_0
E: ID_REVISION=80.00A08
E: ID_SCSI_COMPAT=SATA_WDC_WD30EZRX-XXXXXXXXXXXXXXXXXX
E: ID_SERIAL=WDC_WD30EZRX-XXXXXXXXXXXXXXXXXXXXXXX
E: ID_SERIAL_SHORT=WD-XXXXXXXXXXXX
E: ID_TYPE=disk
E: ID_WWN=XXXXXXXXXXXXXXXXXX
E: ID_WWN_WITH_EXTENSION=XXXXXXXXXXXXXXXXXX
E: MAJOR=8
E: MINOR=48
E: SUBSYSTEM=block
E: UDEV_LOG=3
E: USEC_INITIALIZED=15412564

# ls -la /sys/block/sdz
lrwxrwxrwx 1 root root 0 Apr 22 11:54 /sys/block/sdz -> ../devices/pci0000:00/0000:00:07.0/host4/target4:0:0/4:0:0:0/block/sdz
# lspci -vv -s 00:07.0
00:07.0 SATA controller: Silicon Image, Inc. SiI 3114 [SATALink/SATARaid] Serial ATA Controller (rev 02) (prog-if 00 [Vendor specific])
        Subsystem: Silicon Image, Inc. SiI 3114 SATALink Controller
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 32, Cache Line Size: 32 bytes
        Interrupt: pin A routed to IRQ 17
        Region 0: I/O ports at c400 [size=8]
        Region 1: I/O ports at b000 [size=4]
        Region 2: I/O ports at b400 [size=8]
        Region 3: I/O ports at b800 [size=4]
        Region 4: I/O ports at bc00 [size=16]
        Region 5: Memory at fd118000 (32-bit, non-prefetchable) [size=1K]
        [virtual] Expansion ROM at fa200000 [disabled] [size=512K]
        Capabilities: [60] Power Management version 2
                Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=2 PME-
        Kernel driver in use: sata_sil

フォーマットしたhddの速度

# hdparm -i /dev/sdz

/dev/sdz:

 Model=WDC WD30EZRX-00D8PB0, FwRev=80.00A80, SerialNo=XXXXXXXXXXXXXXX
 Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=0
 BuffType=unknown, BuffSize=unknown, MaxMultSect=16, MultSect=16
 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=5860533168
 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes:  pio0 pio3 pio4
 DMA modes:  mdma0 mdma1 mdma2
 UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5 udma6
 AdvancedPM=no WriteCache=enabled
 Drive conforms to: Unspecified:  ATA/ATAPI-1,2,3,4,5,6,7

 * signifies the current active mode

# hdparm -Tt /dev/sdz

/dev/sdz:
 Timing cached reads:    46 MB in  2.00 seconds =  22.97 MB/sec
 Timing buffered disk reads:  48 MB in  3.07 seconds =  15.61 MB/sec

以下はフォーマット手順の記録

# fdisk -l /dev/sdz

WARNING: GPT (GUID Partition Table) detected on '/dev/sdz'! The util fdisk doesn't support GPT. Use GNU Parted.


Disk /dev/sdz: 3000.6 GB, 3000592982016 bytes
255 heads, 63 sectors/track, 364801 cylinders, total 5860533168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sdz1               1  4294967295  2147483647+  ee  GPT
Partition 1 does not start on physical sector boundary.
# parted /dev/sdz
GNU Parted 2.3
Using /dev/sdz
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) mklabel gpt
Warning: The existing disk label on /dev/sdz will be destroyed and all data on this disk will be lost. Do you want to continue?
Yes/No? Yes
(parted) unit s
(parted) mkpart primary ext3 2048s -1s
Warning: You requested a partition from 2048s to 5860533167s.
The closest location we can manage is 2048s to 5860533134s.
Is this still acceptable to you?
Yes/No? Yes
(parted) align-check optimal 1
1 aligned
(parted) print
Model: ATA WDC WD30EZRX-00D (scsi)
Disk /dev/sdz: 5860533168s
Sector size (logical/physical): 512B/4096B
Partition Table: gpt

Number  Start  End          Size         File system  Name     Flags
 1      2048s  5860533134s  5860531087s  ext4         primary

(parted) quit
Information: You may need to update /etc/fstab.

# fdisk -l /dev/sdz

WARNING: GPT (GUID Partition Table) detected on '/dev/sdz'! The util fdisk doesn't support GPT. Use GNU Parted.


Disk /dev/sdz: 3000.6 GB, 3000592982016 bytes
255 heads, 63 sectors/track, 364801 cylinders, total 5860533168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sdz1               1  4294967295  2147483647+  ee  GPT
Partition 1 does not start on physical sector boundary.
# time mkfs -t ext4 -m 0 -c -c /dev/sdz1
mke2fs 1.42.5 (29-Jul-2012)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
183148544 inodes, 732566385 blocks
0 blocks (0.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=0
22357 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
        32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
        4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
        102400000, 214990848, 512000000, 550731776, 644972544

Testing with pattern 0xaa: done
Reading and comparing: done
Testing with pattern 0x55: done
Reading and comparing: done
Testing with pattern 0xff: done
Reading and comparing: done
Testing with pattern 0x00: done
Reading and comparing: done
Allocating group tables: done
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done


real    9187m23.294s
user    781m54.012s
sys     495m25.982s
# tune2fs -l /dev/sdz1
tune2fs 1.42.5 (29-Jul-2012)
Filesystem volume name:   <none>
Last mounted on:          <not available>
Filesystem UUID:          XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX
Filesystem magic number:  0xEF53
Filesystem revision #:    1 (dynamic)
Filesystem features:      has_journal ext_attr resize_inode dir_index filetype extent flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize
Filesystem flags:         signed_directory_hash
Default mount options:    user_xattr acl
Filesystem state:         clean
Errors behavior:          Continue
Filesystem OS type:       Linux
Inode count:              183148544
Block count:              732566385
Reserved block count:     0
Free blocks:              721019563
Free inodes:              183148533
First block:              0
Block size:               4096
Fragment size:            4096
Reserved GDT blocks:      849
Blocks per group:         32768
Fragments per group:      32768
Inodes per group:         8192
Inode blocks per group:   512
Flex block group size:    16
Filesystem created:       XXXXXXXXXXXXXXXXXXXXXXXX
Last mount time:          n/a
Last write time:          XXXXXXXXXXXXXXXXXXXXXXXX
Mount count:              0
Maximum mount count:      -1
Last checked:             XXXXXXXXXXXXXXXXXXXXXXXX
Check interval:           0 (<none>)
Lifetime writes:          137 MB
Reserved blocks uid:      0 (user root)
Reserved blocks gid:      0 (group root)
First inode:              11
Inode size:               256
Required extra isize:     28
Desired extra isize:      28
Journal inode:            8
Default directory hash:   half_md4
Directory Hash Seed:      XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX
Journal backup:           inode blocks

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ChangeLog

  1. Posted: 2008-10-12T15:53:19+09:00
  2. Modified: 2008-10-12T15:53:19+09:00
  3. Generated: 2017-08-27T23:09:17+09:00