Just tell the user what to do instead of explaining too many details.
I've dropped the read-only variant as it actually has no representation
in the local and sftp backends. Instead it relied on both backends
initially creating all directories, which can't actually be guaranteed.
Based on a suggestion by @brad2014 in significant parts.
The group always needs execute access for the directories. In addition,
files should be always set to read-only for everyone as restic never
modifies files.
users would find it helpful to know how to adjust the "local" backend and they might not get the idea that the local backend is just called local... which in turn leads them to think restic is slow as they can't adjust away from 2 threads for restore and backup.
cmd_prune.go: added option `--repack-smaller-than`
prune.go: added field `SmallPackBytes` to `PruneOptions`, including checking and processing
prune_test.go: added test `TestPruneSmall`
doc/060_forget.rst: added description of enhancement
changelog/unreleased/issue-5109: description of enhancement
Enhancement: create ability to sort output of restic ls -l by
name, size, atime, ctime, mtime, time(=mtime), X(=extension), extension
---------
Co-authored-by: Michael Eischer <michael.eischer@fau.de>
* feat(backends/s3): add warmup support before repacks and restores
This commit introduces basic support for transitioning pack files stored
in cold storage to hot storage on S3 and S3-compatible providers.
To prevent unexpected behavior for existing users, the feature is gated
behind new flags:
- `s3.enable-restore`: opt-in flag (defaults to false)
- `s3.restore-days`: number of days for the restored objects to remain
in hot storage (defaults to `7`)
- `s3.restore-timeout`: maximum time to wait for a single restoration
(default to `1 day`)
- `s3.restore-tier`: retrieval tier at which the restore will be
processed. (default to `Standard`)
As restoration times can be lengthy, this implementation preemptively
restores selected packs to prevent incessant restore-delays during
downloads. This is slightly sub-optimal as we could process packs
out-of-order (as soon as they're transitioned), but this would really
add too much complexity for a marginal gain in speed.
To maintain simplicity and prevent resources exhautions with lots of
packs, no new concurrency mechanisms or goroutines were added. This just
hooks gracefully into the existing routines.
**Limitations:**
- Tests against the backend were not written due to the lack of cold
storage class support in MinIO. Testing was done manually on
Scaleway's S3-compatible object storage. If necessary, we could
explore testing with LocalStack or mocks, though this requires further
discussion.
- Currently, this feature only warms up before restores and repacks
(prune/copy), as those are the two main use-cases I came across.
Support for other commands may be added in future iterations, as long
as affected packs can be calculated in advance.
- The feature is gated behind a new alpha `s3-restore` feature flag to
make it explicit that the feature is still wet behind the ears.
- There is no explicit user notification for ongoing pack restorations.
While I think it is not necessary because of the opt-in flag, showing
some notice may improve usability (but would probably require major
refactoring in the progress bar which I didn't want to start). Another
possibility would be to add a flag to send restores requests and fail
early.
See https://github.com/restic/restic/issues/3202
* ui: warn user when files are warming up from cold storage
* refactor: remove the PacksWarmer struct
It's easier to handle multiple handles in the backend directly, and it
may open the door to reducing the number of requests made to the backend
in the future.
