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biac:backup [2013/02/13 21:38] favorini [Default Snapshot Rules] |
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===== User-Configurable Snapshots of Experiment Directories ===== | ===== User-Configurable Snapshots of Experiment Directories ===== | ||
- | You can request to have snapshots set up for your data directories. A snapshot is a point-in-time, | + | You can request to have snapshots set up for your data directories. A snapshot is a point-in-time, |
==== How to check your snapshots ==== | ==== How to check your snapshots ==== | ||
- | Every data directory on Munin has a hidden snapshot directory (called ~snapshot). Inside you will find directories that correspond to your snapshots. Within those snapshot directories, | + | Every data directory on Munin has a hidden snapshot directory (called ~snapshot). Inside you will find directories that correspond to your snapshots. Within those snapshot directories, |
- | + | ||
- | If your data are on Hill or Fatt, you can right-click your data directory and then click on the '' | + | |
==== Default Snapshot Rules ==== | ==== Default Snapshot Rules ==== | ||
- | If you don't specify | + | If you don't specify |
- Snapshot every night at 11:00 PM. Save 4 snapshots. | - Snapshot every night at 11:00 PM. Save 4 snapshots. | ||
- Snapshot every Sunday night at 11:00 PM. Save 3 snapshots (i.e., 3 weeks). | - Snapshot every Sunday night at 11:00 PM. Save 3 snapshots (i.e., 3 weeks). | ||
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==== Notes ==== | ==== Notes ==== | ||
- | * The snapshots will take up space in your directory. If your directory gets close to full, the oldest existing snapshots will need to be deleted to free up space. | + | * The snapshots will take up space in your directory, unless files are never changed, added or deleted. If your directory gets close to full, the oldest existing snapshots will need to be deleted to free up space. |
* It may be tempting to save 6 months of snapshots, but that will mean that when you delete a file or directory, its space will not be freed for 6 months. | * It may be tempting to save 6 months of snapshots, but that will mean that when you delete a file or directory, its space will not be freed for 6 months. | ||
* The more files change between snapshots, the more space will be taken up by the next snapshot. On the flip side, if nothing changes between snapshots, the snapshot will take up no space. | * The more files change between snapshots, the more space will be taken up by the next snapshot. On the flip side, if nothing changes between snapshots, the snapshot will take up no space. |