"J. E." <[email protected]> writes:
> 1) I read that I should't use s3ql more than once at a time. Does this
> only apply when using the same storage url?
Yes.
> May I use it twice on the
> same computer with e.g. to different S3 target buckets?
Absolutely.
> Is there any advantage (in speed or size) of using several smaller
> s3ql filesystems than a large one?
Theoretically yes. Practically probably not.
> 2) May (should) I directly use an s3ql mount point as data directory
> for my Seafile storage server and git storage, or should I prefer e.g.
> rsync-ing the content into s3ql using a cronjob?
If you use the mount point directly as a data directory, Seafile and git
will probably become a lot slower. Try it and decide if it's still fast
enough for your purposes :-).
> 3) What happens with an s3ql filesystem if either the network
> connection or the backend service (s3) is not available?
You can still access files that happen to be cached locally at the
time, and create new files until the cache is full. Any other request
blocks until the network is up again. If connectivity isn't restored
within a day, S3QL bails out and terminates.
> Is there a
> full, offline-available copy of the data?
No.
> 4) How can I realize an additional backup of (the current state of) an
> s3ql file system e.g. to an external drive?
Not easily. Instead I'd suggest to run an rsync job from your data
directory to an S3QL mount point, and to your external drive.
> Is there local (cached)
> content discarded when it gets uploaded,
No. But there is a limit on the cache size, and you don't have direct
control over what gets evicted if the cache is full.
> 5) Will interrupted uploads (e.g. network outage or local system
> crash) be automatically resumed after the next mounting?
If there's a network outage, you should not even need to unmount.
If the system crashes, you need to run fsck.s3ql and it will upload
everything that is cached but not yet uploaded.
Best,
-Nikolaus
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