1SYSTEMD-FSCK@.SERVICE(8) systemd-fsck@.service SYSTEMD-FSCK@.SERVICE(8)
2
3
4
6 systemd-fsck@.service, systemd-fsck-root.service, systemd-fsck - File
7 system checker logic
8
10 systemd-fsck@.service
11
12 systemd-fsck-root.service
13
14 /usr/lib/systemd/systemd-fsck
15
17 systemd-fsck@.service and systemd-fsck-root.service are services
18 responsible for file system checks. They are instantiated for each
19 device that is configured for file system checking.
20 systemd-fsck-root.service is responsible for file system checks on the
21 root file system, but only if the root filesystem was not checked in
22 the initramfs. systemd-fsck@.service is used for all other file
23 systems and for the root file system in the initramfs.
24
25 These services are started at boot if passno in /etc/fstab for the file
26 system is set to a value greater than zero. The file system check for
27 root is performed before the other file systems. Other file systems may
28 be checked in parallel, except when they are on the same rotating disk.
29
30 systemd-fsck does not know any details about specific filesystems, and
31 simply executes file system checkers specific to each filesystem type
32 (/sbin/fsck.type). These checkers will decide if the filesystem should
33 actually be checked based on the time since last check, number of
34 mounts, unclean unmount, etc.
35
36 systemd-fsck-root.service will activate reboot.target if /sbin/fsck
37 returns the "System should reboot" condition, or emergency.target if
38 /sbin/fsck returns the "Filesystem errors left uncorrected" condition.
39
40 systemd-fsck@.service will fail if /sbin/fsck returns with either
41 "System should reboot" or "Filesystem errors left uncorrected"
42 conditions. For filesystems listed in /etc/fstab without "nofail" or
43 "noauto" options, "local-fs.target" will then activate
44 emergency.target.
45
47 systemd-fsck understands these kernel command line parameters:
48
49 fsck.mode=
50 One of "auto", "force", "skip". Controls the mode of operation. The
51 default is "auto", and ensures that file system checks are done
52 when the file system checker deems them necessary. "force"
53 unconditionally results in full file system checks. "skip" skips
54 any file system checks.
55
56 fsck.repair=
57 One of "preen", "yes", "no". Controls the mode of operation. The
58 default is "preen", and will automatically repair problems that can
59 be safely fixed. "yes" will answer yes to all questions by fsck
60 and "no" will answer no to all questions.
61
63 systemd(1), fsck(8), systemd-quotacheck.service(8), fsck.btrfs(8),
64 fsck.cramfs(8), fsck.ext4(8), fsck.fat(8), fsck.hfsplus(8),
65 fsck.minix(8), fsck.ntfs(8), fsck.xfs(8)
66
67
68
69systemd 250 SYSTEMD-FSCK@.SERVICE(8)