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operations/durability-repairs.md: Added note about randomized scrub times.

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Jonathan Davies 2023-06-15 17:57:14 +01:00 committed by networkException
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GPG key ID: E3877443AE684391
1 changed files with 6 additions and 3 deletions
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doc/book/operations/durability-repairs.md
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@ -26,8 +26,11 @@ their content is correct, by verifying their hash. Any block found to be corrupt
(e.g. by bitrot or by an accidental manipulation of the datastore) will be (e.g. by bitrot or by an accidental manipulation of the datastore) will be
restored from another node that holds a valid copy. restored from another node that holds a valid copy.
A scrub is run automatically by Garage every 30 days. It can also be launched Scrubs are automatically scheduled by Garage to run every 25-35 days (the
manually using `garage repair scrub start`. actual time is randomized to spread load across nodes). The next scheduled run
can be viewed with `garage worker get`.
A scrub can also be launched manually using `garage repair scrub start`.
To view the status of an ongoing scrub, first find the task ID of the scrub worker To view the status of an ongoing scrub, first find the task ID of the scrub worker
using `garage worker list`. Then, run `garage worker info <scrub_task_id>` to using `garage worker list`. Then, run `garage worker info <scrub_task_id>` to
@ -79,7 +82,7 @@ To help make the difference between cases 1 and cases 2 and 3, you may use the
`garage block info` command to see which objects hold a reference to each block. `garage block info` command to see which objects hold a reference to each block.
In the second case (transient errors), Garage will try to fetch the block again In the second case (transient errors), Garage will try to fetch the block again
after a certain time, so the error should disappear natuarlly. You can also after a certain time, so the error should disappear naturally. You can also
request Garage to try to fetch the block immediately using `garage block retry-now` request Garage to try to fetch the block immediately using `garage block retry-now`
if you have fixed the transient issue. if you have fixed the transient issue.