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 in only if the root filesystem wasn't 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 Those 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 one the same rotating
29 disk.
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31 systemd-fsck does not know any details about specific filesystems, and
32 simply executes file system checkers specific to each filesystem type
33 (/sbin/fsck.*). This helper will decide if the filesystem should
34 actually be checked based on the time since last check, number of
35 mounts, unclean unmount, etc.
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37 systemd-fsck will forward file system checking progress to the console.
38 If a file system check fails for a service without nofail, emergency
39 mode is activated, by isolating to emergency.target.
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42 systemd-fsck understands one kernel command line parameter:
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44 fsck.mode=
45 One of "auto", "force", "skip". Controls the mode of operation. The
46 default is "auto", and ensures that file system checks are done
47 when the file system checker deems them necessary. "force"
48 unconditionally results in full file system checks. "skip" skips
49 any file system checks.
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51 fsck.repair=
52 One of "preen", "yes", "no". Controls the mode of operation. The
53 default is " preen", and will automatically repair problems that
54 can be safely fixed. "yes " will answer yes to all questions by
55 fsck and "no" will answer no to all questions.
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58 systemd(1), fsck(8), systemd-quotacheck.service(8), fsck.btrfs(8),
59 fsck.cramfs(8), fsck.ext4(8), fsck.fat(8), fsck.hfsplus(8),
60 fsck.minix(8), fsck.ntfs(8), fsck.xfs(8)
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64systemd 219 SYSTEMD-FSCK@.SERVICE(8)