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ext4 [2010/10/29 17:43]
ext4 [2010/10/29 17:43] (aktuell)
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 +==== Mount ext4 with openSUSE 11.1 (Kernel <2.6.30) ====
  
 +  modprobe ext4dev
 +  tune2fs -E test_fs /dev/sdb1
 +  mount /dev/sdb1 /mnt/sdb1
 +
 +==== Convert from ext2 filesystem to ext3, and ext3 to ext4 ====
 +
 +  -Create an ext2 filesystem
 +    *Create a regular file (filled with zeros) which will be the container for our file system.
 +
 +  [root@f11 ~]# dd if=/​dev/​zero of=fakedisk bs=1k count=10000
 +
 +    *Find the first unused loop device.
 +
 +  [root@f11 ~]# losetup –f
 +  /dev/loop0
 +
 +    *Use the losetup command to associate file fakedisk with /dev/loop0.
 +
 +  [root@f11 ~]#  losetup /dev/loop0 fakedisk
 +
 +    *Create a ext2 file system in the container.
 +
 +  [root@f11 ~]#  mkfs -t ext2 /dev/loop0
 +
 +  -Convert the ext2 filesystem to ext3
 +    *Convert ext2 filesystem to ext3.
 +
 +  [root@f11 ~]# tune2fs –j /dev/loop0
 +  Tune2fs 1.41.4 (27-Jan-2009)
 +  Creating journal inode: done
 +  This filesystem will be automatically checked every 22 mounts or
 +  180 days, whichever comes first. Use tune2fs –c or –i to override.
 +
 +  -Convert the ext3 filesystem to ext4
 +    *Convert the ext3 filesystem to ext4, verify, and remove the loop device.
 +
 +  [root@f11 ~]# tune2fs –O dir_index,​uninit_bg /dev/loop0
 +  tune2fs 1.41.4 (27-Jan-2009)
 +
 +    *Please run e2fsck on the filesystem.
 +
 +  [root@f11 ~]# e2fsck –pf /dev/loop0
 +  /dev/loop0: Group descriptor 0 checksum is invalid. ​ FIXED.
 +
 +  -Convert the ext2 filesystem to ext4
 +
 +  [root@f11 ~]# tune2fs –O dir_index,​uninit_bg,​has_journal /dev/ram0
 +  tune2fs 1.41.4 (27-Jan-2009)
 +  Please run e2fsck on the filesystem.
 +  Creating journal inode: done
 +  This filesystem will be automatically checked every 39 mounts or
 +  180 days, whichever comes first. Use tune2fs –c or –i to override.
 +  [root@f11 ~]# e2fsck –pf /dev/ram0
 +  /dev/ram0: Group descriptor 0 checksum is invalid. ​ FIXED.
 +  /dev/ram0: 140/4096 files (0.7% non-contiguous),​ 3291/16384 blocks
 +
 +  *[[http://​kezhong.wordpress.com/​2009/​07/​02/​converting-ext2-filesystems-to-ext3ext4/​|Converting EXT2 Filesystems to EXT3/EXT4]]
 +  *[[http://​www.troubleshooters.com/​linux/​ext2toext3.htm|ext2 -> ext3]]
ext4.txt · Zuletzt geändert: 2010/10/29 17:43 (Externe Bearbeitung)