Rrc en 14:43 12 jul 2014

2014-07-12T14:43:30Z

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__NOTOC__
* [[:#fsck | fsck]]

== fsck ==

<syntaxhighlight lang="bash">

[root@Llawyr mnt]# fsck --help
fsck from util-linux 2.24
fsck.ext4: invalid option -- 'h'
Usage: fsck.ext4 [-panyrcdfvtDFV] [-b superblock] [-B blocksize]
[-I inode_buffer_blocks] [-P process_inode_size]
[-l|-L bad_blocks_file] [-C fd] [-j external_journal]
[-E extended-options] device

Emergency help:
-p Automatic repair (no questions)
-n Make no changes to the filesystem
-y Assume "yes" to all questions
-c Check for bad blocks and add them to the badblock list
-f Force checking even if filesystem is marked clean
-v Be verbose
-b superblock Use alternative superblock
-B blocksize Force blocksize when looking for superblock
-j external_journal Set location of the external journal
-l bad_blocks_file Add to badblocks list
-L bad_blocks_file Set badblocks list

[root@Llawyr mnt]# ls -al /usr/sbin/fsck*
-rwxr-xr-x 1 root root 33048 Dec 28 2013 /usr/sbin/fsck*
-rwxr-xr-x 1 root root 24616 Dec 28 2013 /usr/sbin/fsck.cramfs*
lrwxrwxrwx 1 root root 6 May 23 10:37 /usr/sbin/fsck.ext2 -> e2fsck*
lrwxrwxrwx 1 root root 6 May 23 10:37 /usr/sbin/fsck.ext3 -> e2fsck*
lrwxrwxrwx 1 root root 6 May 23 10:37 /usr/sbin/fsck.ext4 -> e2fsck*
lrwxrwxrwx 1 root root 6 May 23 10:37 /usr/sbin/fsck.ext4dev -> e2fsck*
-rwxr-xr-x 1 root root 57640 Jan 18 13:59 /usr/sbin/fsck.fat*
-rwxr-xr-x 1 root root 62856 Dec 28 2013 /usr/sbin/fsck.minix*
lrwxrwxrwx 1 root root 8 May 23 11:00 /usr/sbin/fsck.msdos -> fsck.fat*
lrwxrwxrwx 1 root root 8 May 23 11:00 /usr/sbin/fsck.vfat -> fsck.fat*
-rwxr-xr-x 1 root root 450 Oct 21 2013 /usr/sbin/fsck.xfs*

[root@Llawyr ~]# umount /dev/md1p1

[root@Llawyr ~]# mkfs -L MiLlaveUSB -t ext4 /dev/md1p1
mke2fs 1.42.9 (28-Dec-2013)
Filesystem label=MiLlaveUSB
OS type: Linux
Block size=1024 (log=0)
Fragment size=1024 (log=0)
Stride=512 blocks, Stripe width=1024 blocks
50600 inodes, 201728 blocks
10086 blocks (5.00%) reserved for the super user
First data block=1
Maximum filesystem blocks=67371008
25 block groups
8192 blocks per group, 8192 fragments per group
2024 inodes per group
Superblock backups stored on blocks:
8193, 24577, 40961, 57345, 73729

Allocating group tables: done
Writing inode tables: done
Creating journal (4096 blocks): done
Writing superblocks and filesystem accounting information: done

[root@Llawyr ~]# fsck -f -y -t ext4 /dev/md1p1
fsck from util-linux 2.24
e2fsck 1.42.9 (28-Dec-2013)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
MiLlaveUSB: 11/50600 files (0.0% non-contiguous), 12034/201728 blocks

[root@Llawyr ~]# fsck -f -y -t ext4 /dev/md1p1
fsck from util-linux 2.24
e2fsck 1.42.9 (28-Dec-2013)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
MiLlaveUSB: 11/50600 files (0.0% non-contiguous), 12034/201728 blocks
[root@Llawyr ~]# mkfs.xfs -f -L MiLlaveUSB /dev/md1p1
meta-data=/dev/md1p1 isize=256 agcount=4, agsize=12608 blks
= sectsz=512 attr=2, projid32bit=0
data = bsize=4096 blocks=50432, 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

[root@Llawyr ~]# fsck -t xfs -f -y /dev/md1p1
fsck from util-linux 2.24
/sbin/fsck.xfs: XFS file system.

[root@Llawyr ~]# fsck.xfs --help
/usr/sbin/fsck.xfs: --help does not exist

[root@Llawyr ~]# fsck.xfs
If you wish to check the consistency of an XFS filesystem or
repair a damaged filesystem, see xfs_check(8) and xfs_repair(8).

[root@Llawyr ~]# fsck.xfs -f -y /dev/md1p1
/usr/sbin/fsck.xfs: XFS file system.

[root@Llawyr ~]# man fsck.xfs

fsck.xfs(8) System Manager's Manual fsck.xfs(8)

NAME
fsck.xfs - do nothing, successfully

SYNOPSIS
fsck.xfs [ filesys ... ]

DESCRIPTION
fsck.xfs is called by the generic Linux fsck(8) program at startup to
check and repair an XFS filesystem. XFS is a journaling filesystem and
performs recovery at mount(8) time if necessary, so fsck.xfs simply
exits with a zero exit status.

If you wish to check the consistency of an XFS filesystem, or repair a
damaged or corrupt XFS filesystem, see xfs_check(8) and xfs_repair(8).

FILES
/etc/fstab.

SEE ALSO
fsck(8), fstab(5), xfs(5), xfs_check(8), xfs_repair(8).

[root@Llawyr ~]# xfs_check /dev/md1p1
xfs_check is deprecated and scheduled for removal in June 2014.
Please use xfs_repair -n <dev> instead.

[root@Llawyr ~]# xfs_repair -n /dev/md1p1
Phase 1 - find and verify superblock...
Phase 2 - using internal log
- scan filesystem freespace and inode maps...
- found root inode chunk
Phase 3 - for each AG...
- scan (but don't clear) agi unlinked lists...
- process known inodes and perform inode discovery...
- agno = 0
- agno = 1
- agno = 2
- agno = 3
- process newly discovered inodes...
Phase 4 - check for duplicate blocks...
- setting up duplicate extent list...
- check for inodes claiming duplicate blocks...
- agno = 0
- agno = 1
- agno = 3
- agno = 2
No modify flag set, skipping phase 5
Phase 6 - check inode connectivity...
- traversing filesystem ...
- traversal finished ...
- moving disconnected inodes to lost+found ...
Phase 7 - verify link counts...
No modify flag set, skipping filesystem flush and exiting.

</syntaxhighlight>

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Rrc en 14:43 12 jul 2014