Under certain circumstances, Tarsnap will interrupt the creation of an
archive. When this occurs, the archive's name will have
.part" appended, to denote that it is a "partial"
archive, and a new archive cannot be given the same name as the
original (attempted) archive.
Partial archives can arise from:
The user presses
^Qor sends a
- Tarsnap fails while creating an archive (e.g., due to a power failure or loss of internet connectivity) but later recovers a checkpoint.
The bandwidth limit
Partial archives count towards deduplication: If you attempt to create a new archive from the same data, Tarsnap will not upload any data that is already covered by that partial archive, thereby allowing us to minimize wasted bandwidth.
"Completing" a partial archive
For example, suppose we wish to have a series of daily archives, but today's archive is interrupted. For simplicity, suppose that today is January 3rd, 2016.
tarsnap --list-archives backup-2016-01-01 backup-2016-01-02 backup-2016-01-03.part
To "complete" the partial archive, we would create a new archive as normal, albeit with a new name:
tarsnap -c -f backup-2016-01-03-second /MY/DATADIR
If we created the
successfully, then we can delete the partial archive and rename the
new one to match our naming scheme:
tarsnap -d -f backup-2016-01-03.part
tarsnap -c -f backup-2016-01-03 @@backup-2016-01-03-second
tarsnap -d -f backup-2016-01-03-second
We will now be left with the archives we desired:
tarsnap --list-archives backup-2016-01-01 backup-2016-01-02 backup-2016-01-03