Difference between revisions of "Storage"
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Torradeflot (talk | contribs) (Created page with "= Tape = Status and attributes of tape-backed storage can be accessed through special dot commands. Some of them are listed here: https://www.dcache.org/manuals/Book-10.2/r...") |
Torradeflot (talk | contribs) (→Tape) |
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Some of them are listed here: https://www.dcache.org/manuals/Book-10.2/rf-dot-commands.shtml | Some of them are listed here: https://www.dcache.org/manuals/Book-10.2/rf-dot-commands.shtml | ||
| − | |||
| + | == Check folder tags == | ||
| − | To check if a folder is backed by tape or not, you can use the | + | To check if a folder is backed by tape or not, you can use the <code>grep "" $(cat ".(tags)()")</code> |
On a tape-backed folder you will see something like this. | On a tape-backed folder you will see something like this. | ||
| Line 31: | Line 31: | ||
.(tag)(RetentionPolicy):REPLICA | .(tag)(RetentionPolicy):REPLICA | ||
.(tag)(storage_group):vo-incaem | .(tag)(storage_group):vo-incaem | ||
| + | |||
| + | == File locality == | ||
| + | |||
| + | $ cat ".(get)(test_500M_1)(locality)" | ||
| + | ONLINE | ||
Latest revision as of 15:43, 9 January 2025
Tape
Status and attributes of tape-backed storage can be accessed through special dot commands.
Some of them are listed here: https://www.dcache.org/manuals/Book-10.2/rf-dot-commands.shtml
Check folder tags
To check if a folder is backed by tape or not, you can use the grep "" $(cat ".(tags)()")
On a tape-backed folder you will see something like this.
[torradeflot@tds280 albag20240319044]$ grep "" $(cat ".(tags)()") .(tag)(AccessLatency):NEARLINE .(tag)(file_family):tape .(tag)(file_family_width):1 .(tag)(file_family_wrapper):cpio_odc .(tag)(library):IBML8 .(tag)(OSMTemplate):StoreName vo-incaem .(tag)(RetentionPolicy):CUSTODIAL .(tag)(sGroup):incaem .(tag)(storage_group):vo-incaem
In a non-tape folder:
[torradeflot@tds280 incaem]$ grep "" $(cat ".(tags)()") .(tag)(AccessLatency):ONLINE .(tag)(file_family):incaem .(tag)(RetentionPolicy):REPLICA .(tag)(storage_group):vo-incaem
File locality
$ cat ".(get)(test_500M_1)(locality)" ONLINE