1SYSTEMD-FSCK@.SERVICE(8) systemd-fsck@.service SYSTEMD-FSCK@.SERVICE(8)
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6 systemd-fsck@.service, systemd-fsck-root.service, systemd-fsck - File
7 system checker logic
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10 systemd-fsck@.service
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12 systemd-fsck-root.service
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14 /usr/lib/systemd/systemd-fsck
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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.
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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.
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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.
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36 If a file system check fails for a service without nofail, emergency
37 mode is activated, by isolating to emergency.target.
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40 systemd-fsck understands these kernel command line parameters:
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42 fsck.mode=
43 One of "auto", "force", "skip". Controls the mode of operation. The
44 default is "auto", and ensures that file system checks are done
45 when the file system checker deems them necessary. "force"
46 unconditionally results in full file system checks. "skip" skips
47 any file system checks.
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49 fsck.repair=
50 One of "preen", "yes", "no". Controls the mode of operation. The
51 default is "preen", and will automatically repair problems that can
52 be safely fixed. "yes" will answer yes to all questions by fsck
53 and "no" will answer no to all questions.
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56 systemd(1), fsck(8), systemd-quotacheck.service(8), fsck.btrfs(8),
57 fsck.cramfs(8), fsck.ext4(8), fsck.fat(8), fsck.hfsplus(8),
58 fsck.minix(8), fsck.ntfs(8), fsck.xfs(8)
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62systemd 248 SYSTEMD-FSCK@.SERVICE(8)