dss/dss.suite, branch next

Introduce prune --disk-space.

2019-09-21T13:11:09Z

The new option takes a mandatory argument of the set {check, high, low}. The latter two make the command act as if disk space was high/low without actually performing the check. This is mostly useful for debugging.

Revamp com_prune().

2019-09-21T13:11:09Z

The prune subcommand implements its own logic for picking the snapshot to remove. The algorithm is similar but not identical to how the run subcommand gets rid of snapshots. This patch eliminates this inconsistency by changing com_prune() to call the find_removable_snapshot() helper which was introduced in the previous commit. Since find_removable_snapshot() returns a dynamically allocated string via the "why" pointer, we have to introduce another label for freeing this memory. The patch also improves the help text of the prune subcommand slightly.

Support multiple source directories.

2018-06-08T13:40:16Z

rsync is capable of copying multiple source directories to a single destination, but this is currently not supported by dss. This commit adds this functionality. The implementation is straight-forward, except that we don't want to add a trailing slash to every source directory. The new comment in dss.c explains this in more detail. Suggested-By: Sanja Jasek Tested-By: Sanja Jasek

Replace license boilerplate with single line SPDX comments.

2017-11-19T01:53:25Z

This gets rid of existing copyright templates in favor of just the one-liner SPDX (Software Package Data Exchange) notice. All files are licensed under the GPL-2.0, so the same tag is added to each file. No copyright is changed by this commit. Several files (mostly the very short ones) did not contain a license text so far. By default all files without license information are under the default license of this package, which is GPL version 2. This commit adds the missing SPDX line so that now all files except dss.css, index.html.in, INSTALL, NEWS and README have it. We also remove author and copyright year, since the author is the same everywhere, and the year hasn't been updated any more since at least six years. Accurate information is available from the git log. The COPYING file can also be removed because the license text at https://spdx.org/licenses/GPL-2.0.html is immutable.

Merge branch 'refs/heads/t/kill-w'

2017-11-18T14:56:55Z

Two patches which make life easier for shutdown scripts which need to terminate the dss process, but would like to wait until the exit hook completed. The merge conflicted in dss.suite, but this was trivial to fix. Cooking for a week. * refs/heads/t/kill-w: kill: New option --wait. run: Wait for children to die.

Merge branch 'refs/heads/t/mountpoint'

2017-11-15T18:09:53Z

A new main option which aborts dss if the destination file system is not mounted. Cooking for two weeks. * refs/heads/t/mountpoint: New option: --mountpoint.

Fix bad grammar "allows ".

2017-11-14T03:26:10Z

In standard English, the verb "allows" can never take an infinitive as its direct object.

kill: New option --wait.

2017-11-11T15:26:09Z

Simply running "dss kill" during system shutdown to terminate the dss process does not work as expected because the kill subcommand exits after the signal has been sent, which might be long before the targeted dss process terminates. For example, the dss main process might be running its exit hook to inform the system administrator about the fact that the dss service is going down when the shutdown procedure already has deactivated the network. Or the shutdown procedure kills the exit hook with SIGKILL during its normal "killing remaining processes" phase before file systems are unmounted. With the --wait option, the kill subcommand will not return until the dss process has died or the timeout expires. We hardcode the timeout in send_signal() for the time being. It can be made configurable if this turns out to be necessary.

New subcommand: configtest.

2017-10-28T09:26:31Z

Similar to the identically named subcommand of apache2ctl. This is trivial to implement because we only need to describe the subcommand in dss.suite and create a command handler which prints an OK message and returns success. If the config file contains errors, we abort earlier anyway.

New option: --mountpoint.

2017-10-21T11:06:45Z

The new option applies to run, create, ls and prune. The feature could be implemented as a pre-create hook, but since it is so common, it makes sense to add it to dss proper. As for the implementation we simply check that "." and ".." are on different devices (or are identical).