Back-up White Papers
Linux Server Hacks: Create a Copy-on-Write Snapshot of an LVM Volume
Overview A snapshot is a copy of a logical volume that reflects the contents of that logical volume when the snapshot was created. With a copy-on-write snapshot, each time a file changes in the original volume, the contents of the original file (as of the time that the snapshot was made) are preserved in the snapshot volume. In other words, the complete contents of the original file are copied to the snapshot volume when one writes changes to the file in the original volume. Implementing a copy-on-write volume to track changed files is like having a built-in backup mechanism, because it provides one with a point-in-time copy of the filesystem that is contained on the logical volume.
| Publisher | O'Reilly Media | File Format | |
|---|---|---|---|
| Date Published | December 2005 | Downloads | 11 |
| Format | Book chapters | ||
| Topics | |||
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