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一つ目の謎。
LS-VL の
標準ファームで mke2fs -j -I 128 /dev/sdb1 したら起動するのに、
Debian でmke2fs -j -I 128 /dev/sdb1 したら起動しない。
それぞれを tune2fs で見てみる。
root@LS-VL815:~# mke2fs -j -I 128 /dev/sdb1
mke2fs 1.40.5 (27-Jan-2008)
/dev/sdb1 is mounted; will not make a filesystem here!
root@LS-VL815:~# df
Filesystem 1k-blocks Used Available Use% Mounted on
/dev/sda2 4923420 818748 3854576 18% /
udev 10240 116 10124 1% /dev
/dev/ram1 15360 152 15208 1% /mnt/ram
/dev/sda1 992036 256312 685728 27% /boot
/dev/usbdisk1_1 992036 17636 924404 2% /mnt/usbdisk1
/dev/disk1_6 237023872 582132 236441740 0% /mnt/disk1
tmpfs 8192 2032 6160 25% /mnt/ram/com.kernel.org
root@LS-VL815:~# umount /mnt/usbdisk1/
root@LS-VL815:~# mke2fs -j -I 128 /dev/sdb1
mke2fs 1.40.5 (27-Jan-2008)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
62720 inodes, 249995 blocks
12499 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=260046848
8 block groups
32768 blocks per group, 32768 fragments per group
7840 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376
Writing inode tables: done
Creating journal (4096 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 26 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
root@LS-VL815:~# tune2fs -l /dev/sdb1
tune2fs 1.40.5 (27-Jan-2008)
Filesystem volume name:
Last mounted on:
Filesystem UUID: 7493f641-4175-429f-9217-906ae515f2fe
Filesystem magic number: 0xEF53
Filesystem revision #: 1 (dynamic)
Filesystem features: has_journal ext_attr resize_inode dir_index filetype sparse_super large_file
Filesystem flags: unsigned_directory_hash
Default mount options: (none)
Filesystem state: clean
Errors behavior: Continue
Filesystem OS type: Linux
Inode count: 62720
Block count: 249995
Reserved block count: 12499
Free blocks: 243596
Free inodes: 62709
First block: 0
Block size: 4096
Fragment size: 4096
Reserved GDT blocks: 61
Blocks per group: 32768
Fragments per group: 32768
Inodes per group: 7840
Inode blocks per group: 245
Filesystem created: Thu Dec 22 22:38:22 2011
Last mount time: n/a
Last write time: Thu Dec 22 22:38:22 2011
Mount count: 0
Maximum mount count: 26
Last checked: Thu Dec 22 22:38:22 2011
Check interval: 15552000 (6 months)
Next check after: Tue Jun 19 22:38:22 2012
Reserved blocks uid: 0 (user root)
Reserved blocks gid: 0 (group root)
First inode: 11
Inode size: 128
Journal inode: 8
Default directory hash: tea
Directory Hash Seed: 28a722fe-ac25-42a6-a01a-d0ac40c893b9
Journal backup: inode blocks
root@LS-VL815:~#
root@vl:~# mke2fs -j -I 128 /dev/sdb1
mke2fs 1.41.12 (17-May-2010)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
62720 inodes, 249995 blocks
12499 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=260046848
8 block groups
32768 blocks per group, 32768 fragments per group
7840 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376
Writing inode tables: done
Creating journal (4096 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 28 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
root@vl:~# tune2fs -l /dev/sdb1
tune2fs 1.41.12 (17-May-2010)
Filesystem volume name:
Last mounted on:
Filesystem UUID: 6b9f94ef-b8c3-41f6-8e96-a72a69e0145f
Filesystem magic number: 0xEF53
Filesystem revision #: 1 (dynamic)
Filesystem features: has_journal ext_attr resize_inode dir_index filetype sparse_super large_file
Filesystem flags: unsigned_directory_hash
Default mount options: (none)
Filesystem state: clean
Errors behavior: Continue
Filesystem OS type: Linux
Inode count: 62720
Block count: 249995
Reserved block count: 12499
Free blocks: 243597
Free inodes: 62709
First block: 0
Block size: 4096
Fragment size: 4096
Reserved GDT blocks: 61
Blocks per group: 32768
Fragments per group: 32768
Inodes per group: 7840
Inode blocks per group: 245
Filesystem created: Thu Dec 22 22:44:37 2011
Last mount time: n/a
Last write time: Thu Dec 22 22:44:37 2011
Mount count: 0
Maximum mount count: 28
Last checked: Thu Dec 22 22:44:37 2011
Check interval: 15552000 (6 months)
Next check after: Tue Jun 19 22:44:37 2012
Reserved blocks uid: 0 (user root)
Reserved blocks gid: 0 (group root)
First inode: 11
Inode size: 128
Journal inode: 8
Default directory hash: half_md4
Directory Hash Seed: 6ad8e150-c767-48b6-b9bc-8ff8e5d04ac1
Journal backup: inode blocks
root@vl:~#
いろいろググッて mke2fs -E hash_alg=tea とすれば
Default directory hash: teaとできそうである。
root@vl:~# mke2fs -j -I 128 -E hash_alg=tea /dev/sdb1
mke2fs 1.41.12 (17-May-2010)
Bad option(s) specified: hash_alg
Extended options are separated by commas, and may take an argument which
is set off by an equals ('=') sign.
Valid extended options are:
stride=
stripe-width=
resize=
lazy_itable_init=<0 to disable, 1 to enable>
test_fs
root@vl:~#
むむむ。
LS-AVL の U-Boot は
Default directory hash: teaでないと boot しないようだ。
Default directory hash: teaで mkfs できないようだ。。。困った
まぁ、標準ファームがあるのでいいんだけれど、、、消化不良
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