Red Hat ENTERPRISE LINUX 5 - LOGICAL VOLUME MANAGER ADMINISTRATION Guide d'installation télécharger pdf (Page 23)

• You can execute the fsck command on a snapshot file system to check the file system integ-

rity and determine whether the original file system requires file system repair.

• Because the snapshot is read/write, you can test applications against production data by

taking a snapshot and running tests against the snapshot, leaving the real data untouched.

• You can create volumes for use with the Xen virtual machine monitor. You can use the snap-

shot feature to create a disk image, snapshot it, and modify the snapshot for a particular

domU instance. You can then create another snapshot and modify it for another domU in-

stance. Since the only storage used is chunks that were changed on the origin or snapshot,

the majority of the volume is shared.

3.4. Snapshot Volumes

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Red Hat ENTERPRISE LINUX 5 - LOGICAL VOLUME MANAGER ADMINISTRATION Guide d'installation Page 23