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NEWS: announce the #598 'tahoe backup' command

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Brian Warner 2009-02-05 23:44:16 -07:00
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23
NEWS
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@ -78,11 +78,24 @@ of existing mutable shares).
** CLI Changes
This release adds the 'tahoe create-alias' command, which is a combination of
'tahoe mkdir' and 'tahoe add-alias'. This also allows you to start using a
new tahoe directory without exposing its URI in the argv list, which is
publicly visible (through the process table) on most unix systems. Thanks to
Kevin Reid for bringing this issue to our attention.
The "tahoe backup" command is new in this release, which creates efficient
versioned backups of a local directory. Given a local pathname and a target
Tahoe directory, this will create a read-only snapshot of the local directory
in $target/Archives/$timestamp. It will also create $target/Latest, which is
a reference to the latest such snapshot. Each time you run "tahoe backup"
with the same source and target, a new $timestamp snapshot will be added.
These snapshots will share directories that have not changed since the last
backup, to speed up the process and minimize storage requirements. In
addition, a small database is used to keep track of which local files have
been uploaded already, to avoid uploading them a second time. This
drastically reduces the work needed to do a "null backup" (when nothing has
changed locally), making "tahoe backup' suitable to run from a daily cronjob.
This release also adds the 'tahoe create-alias' command, which is a
combination of 'tahoe mkdir' and 'tahoe add-alias'. This also allows you to
start using a new tahoe directory without exposing its URI in the argv list,
which is publicly visible (through the process table) on most unix systems.
Thanks to Kevin Reid for bringing this issue to our attention.
The single-argument form of "tahoe put" was changed to create an unlinked
file. I.e. "tahoe put bar.txt" will take the contents of a local "bar.txt"