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| − | =btrfs-check(8) Manual Page=
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| | {{GeneratedManpage | | {{GeneratedManpage |
| | |name=btrfs-check}} | | |name=btrfs-check}} |
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| − | ==NAME==
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| − | btrfs-check - check or repair an unmounted btrfs filesystem
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| − | ==SYNOPSIS==
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| − | '''btrfs check''' [options] <device>
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| − | ==DESCRIPTION==
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| − | '''btrfs check''' is used to check or repair an unmounted btrfs filesystem.
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| − | '''Note:''' Since btrfs is under development, the '''btrfs check''' capabilities are continuously enhanced. It’s highly recommended to read the following btrfs wiki before executing '''btrfs check''' with '''--repair''' option:<br />https://btrfs.wiki.kernel.org/index.php/Btrfsck
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| − | '''btrfsck''' is an alias of '''btrfs check''' command and is now deprecated.
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| − | ==OPTIONS==
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| − | ; -s|--super <superblock>
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| − | : use <superblock>th superblock copy, valid values are 0 up to 2 if the respective superblock offset is within the filesystem
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| − | ; -b|--backup
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| − | : use the first backup roots stored in the superblock that is valid
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| − | ; --repair
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| − | : try to repair the filesystem
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| − | ; --readonly
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| − | : run in read-only mode (default)
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| − | ; --init-csum-tree
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| − | : create a new CRC tree and recalculate all checksums
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| − | ; --init-extent-tree
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| − | : create a new extent tree
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| − | ; --check-data-csum
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| − | : verify checksums of data blocks
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| − | ; -p|--progress
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| − | : indicate progress at various checking phases
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| − | ; --qgroup-report
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| − | : verify qgroup accounting and compare against filesystem accounting
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| − | ; -E|--subvol-extents <subvolid>
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| − | : show extent state for the given subvolume
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| − | ; -r|--tree-root <bytenr>
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| − | : use the given bytenr for the tree root
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| − | ; --chunk-root <bytenr>
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| − | : use the given bytenr for the chunk tree root
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| − | ==EXIT STATUS==
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| − | '''btrfs check''' returns a zero exit status if it succeeds. Non zero is returned in case of failure.
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| − | ==AVAILABILITY==
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| − | '''btrfs''' is part of btrfs-progs. Please refer to the btrfs wiki http://btrfs.wiki.kernel.org for further details.
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| − | ==SEE ALSO==
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| − | [[Manpage/mkfs.btrfs|mkfs.btrfs(8)]], [[Manpage/btrfs-scrub|btrfs-scrub(8)]], [[Manpage/btrfs-rescue|btrfs-rescue(8)]]
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| − | [[Category:Manpage]]
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