If you wish to see the frequency number and the current mount count for a specific partition, use: Note that 1 would make it scan at every boot, while 0 would stop scanning altogether. In this example, 20 is the number of boots between two checks. To change the frequency of checking, run: Note: The following commands tune2fs and dumpe2fs work only with ext2/ext3/ext4 file systems.īy default, fsck checks a file system every 30 boots (counted individually for each partition). To automatically repair damaged portions of an ext2/ext3/ext4 or FAT file system, run: Tips and tricks Attempt to repair damaged blocks (Other possible values are no and preen.) Check the documentation for the meaning of these options. answer yes to all questions) by setting the fsck.repair kernel command line option to yes. You can set fsck to automatically apply all suggested change (i.e. This happens when you need to apply some changes to fix the file system which are not considered completely safe, and thus require fsck to be run manually. The boot time fsck checks might end up saying "UNEXPECTED INCONSISTENCY RUN fsck MANUALLY." Automatically answer yes to all repair questions The aforementioned solution is thus the only one working for Arch Linux. Note: For those accustomed to use other GNU/Linux distributions, the old tricks consisting in writing a file with the name forcefsck to the root of each file system or using the command shutdown with the -F flag were only working for the old SysVinit and early versions of Upstart and are not working with systemd. However, checking the root file system this way causes a delay in the boot process, because the file system has to be remounted. This will check every file system you have on the machine.Īlternatively, systemd provides which checks all configured file systems, which were not checked in the initramfs. If you use the base mkinitcpio hook, you can force fsck at boot time by passing fsck.mode=force as a kernel parameter. The kernel parameter fsck.mode=skip can be used to make sure fsck is disabled entirely for both options. If you want to go with option 2 instead, you should remove the fsck hook from nf and use ro on the kernel command-line. The first option is the recommended default, and what you will end up with if you follow the Installation guide. For the root file system, it also has to be mounted read-only initially with the kernel parameter ro and only then remounted read-write from fstab (note that the defaults mount option implies rw). systemd will fsck all file systems having a fsck pass number greater than 0 (either with #fstab options or a user-supplied unit file).If you do this, you should mount root read-write via the appropriate rw kernel parameter. mkinitcpio offers you the option to fsck your root file system before mounting it via the fsck hook.Hence, there is usually no need to resort to the command-line. The Arch Linux boot process conveniently takes care of the fsck procedure for you and will check all relevant partitions on your drive(s) automatically on every boot. Normally, the fsck program will try to handle file systems on different physical disk drives in parallel to reduce the total amount of time needed to check all of the file systems (see fsck(8)). Fsck stands for "file system check" and it is used to check and optionally repair one or more Linux file systems.
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