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btrfs-image \- create/restore an image of the filesystem
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[options] \fIsource\fP \fItarget\fP
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is used to create an image of a btrfs filesystem. All data will be zeroed,
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but metadata and the like is preserved.
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is the special file corresponding to the device containing a btrfs filesystem.
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(e.g \fI/dev/sdXX\fP).
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is the image file that btrfs-image creates. When used with \fB-r\fP option,
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\fBbtrfs-image\fP restores the image file from source into target.
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Restore metadump image. By default, this fixes super's chunk tree, by
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using 1 stripe pointing to primary device, so that file system can be
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restored by running tree log reply if possible. To restore without
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changing number of stripes in chunk tree check \fB-o\fP option.
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compression level (0 ~ 9).
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number of threads (1 ~ 32) to be used to process the image dump or restore.
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use the old restore method, this does not fixup the chunk tree so the restored
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file system will not be able to be mounted.
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Sanitize the file names when generating the image. One \fB-s\fP means just
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generate random garbage, which means that the directory indexes won't match up
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since the hashes won't match with the garbage filenames. Using \fB-ss\fP will
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calculate a collision for the filename so that the hashes match, and if it
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can't calculate a collision then it will just generate garbage. The collision
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calculator is very time and CPU intensive so only use it if you are having
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problems with your file system tree and need to have it mostly working.
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Walk all the trees manually and copy any blocks that are referenced. Use this
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option if your extent tree is corrupted to make sure that all of the metadata is
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is part of btrfs-tools. Btrfs is currently under heavy development,
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and not suitable for any uses other than benchmarking and review.
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Please refer to the btrfs wiki
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http://btrfs.wiki.kernel.org for further details.
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.BR btrfsck (8), mkfs.btrfs (8)
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man/btrfs-image.8.in
