SYSTEMD-FSCK@.SERVICE(8) systemd-fsck@.service SYSTEMD-FSCK@.SERVICE(8)
systemd-fsck@.service, systemd-fsck-root.service, systemd-fsck- usr.service, systemd-fsck - File system checker logic
systemd-fsck@.service systemd-fsck-root.service systemd-fsck-usr.service /usr/lib/systemd/systemd-fsck
systemd-fsck@.service, systemd-fsck-root.service, and systemd-fsck-usr.service are services responsible for file system checks. They are instantiated for each device that is configured for file system checking. systemd-fsck-root.service and systemd-fsck-usr.service are responsible for file system checks on the root and /usr file system, respectively, but only if the root filesystem was not checked in the initrd. systemd-fsck@.service is used for all other file systems and for the root file system in the initrd. These services are started at boot if passno in /etc/fstab for the file system is set to a value greater than zero. The file system check for root is performed before the other file systems. Other file systems may be checked in parallel, except when they are on the same rotating disk. systemd-fsck does not know any details about specific filesystems, and simply executes file system checkers specific to each filesystem type (fsck.type). These checkers will decide if the filesystem should actually be checked based on the time since last check, number of mounts, unclean unmount, etc. systemd-fsck-root.service and systemd-fsck-usr.service will activate reboot.target if fsck returns the "System should reboot" condition, or emergency.target if fsck returns the "Filesystem errors left uncorrected" condition. systemd-fsck@.service will fail if fsck returns with either "System should reboot" or "Filesystem errors left uncorrected" conditions. For filesystems listed in /etc/fstab without "nofail" or "noauto" options, "local-fs.target" will then activate emergency.target.
systemd-fsck understands these kernel command line parameters: fsck.mode= One of "auto", "force", "skip". Controls the mode of operation. The default is "auto", and ensures that file system checks are done when the file system checker deems them necessary. "force" unconditionally results in full file system checks. "skip" skips any file system checks. fsck.repair= One of "preen", "yes", "no". Controls the mode of operation. The default is "preen", and will automatically repair problems that can be safely fixed. "yes" will answer yes to all questions by fsck and "no" will answer no to all questions.
systemd(1), fsck(8), systemd-quotacheck.service(8), fsck.btrfs(8), fsck.cramfs(8), fsck.ext4(8), fsck.fat(8), fsck.hfsplus(8), fsck.minix(8), fsck.ntfs(8), fsck.xfs(8)
This page is part of the systemd (systemd system and service manager) project. Information about the project can be found at ⟨http://www.freedesktop.org/wiki/Software/systemd⟩. If you have a bug report for this manual page, see ⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩. This page was obtained from the project's upstream Git repository ⟨https://github.com/systemd/systemd.git⟩ on 2023-06-23. (At that time, the date of the most recent commit that was found in the repository was 2023-06-23.) If you discover any rendering problems in this HTML version of the page, or you believe there is a better or more up-to-date source for the page, or you have corrections or improvements to the information in this COLOPHON (which is not part of the original manual page), send a mail to firstname.lastname@example.org systemd 253 SYSTEMD-FSCK@.SERVICE(8)
Pages that refer to this page: kernel-command-line(7), systemd.directives(7), systemd.index(7), systemd-quotacheck.service(8)