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1.2 KiB
25 lines
1.2 KiB
# SPDX-License-Identifier: GPL-2.0-only |
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config NILFS2_FS |
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tristate "NILFS2 file system support" |
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select CRC32 |
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help |
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NILFS2 is a log-structured file system (LFS) supporting continuous |
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snapshotting. In addition to versioning capability of the entire |
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file system, users can even restore files mistakenly overwritten or |
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destroyed just a few seconds ago. Since this file system can keep |
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consistency like conventional LFS, it achieves quick recovery after |
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system crashes. |
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NILFS2 creates a number of checkpoints every few seconds or per |
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synchronous write basis (unless there is no change). Users can |
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select significant versions among continuously created checkpoints, |
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and can change them into snapshots which will be preserved for long |
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periods until they are changed back to checkpoints. Each |
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snapshot is mountable as a read-only file system concurrently with |
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its writable mount, and this feature is convenient for online backup. |
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Some features including atime, extended attributes, and POSIX ACLs, |
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are not supported yet. |
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To compile this file system support as a module, choose M here: the |
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module will be called nilfs2. If unsure, say N.
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