From 260d141cfa4b0f6368920762fe85093da75e3849 Mon Sep 17 00:00:00 2001 From: Andre Noll Date: Tue, 7 Apr 2009 15:23:34 +0200 Subject: [PATCH 1/1] Add pre-remove and post-remove hooks to dss.ggo. These are not yet used in the code. --- dss.ggo | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/dss.ggo b/dss.ggo index 099df4c..9c687f4 100644 --- a/dss.ggo +++ b/dss.ggo @@ -277,6 +277,37 @@ details=" store them in a database for further analysis. " +option "pre-remove-hook" - +#~~~~~~~~~~~~~~~~~~~~~~~~~~ +"Executed before snapshot removal" +string typestr="command" +optional +details=" + Execute this command before removing a snapshot. If this + command returns with a non-zero exit status, no snapshot is + being removed and the operation is retried later. + + For example, one might want to execute a script that checks + whether the snapshot to be deleted is currently used by + another process, e.g. by a tape-based backup system that runs + concurrently to dss. + + Another possible application of this is to record disk-usage + patterns before and after snapshot removal. +" + +option "post-remove-hook" - +#~~~~~~~~~~~~~~~~~~~~~~~~~~ +"Executed after snapshot removal" +string typestr="command" +optional +details=" + Execute this after a snapshot has successfully been + removed. The full path of the removed snapshot is + passed to the hook as the first argument. The exit code of + this hook is ignored. +" + option "exit-hook" e #~~~~~~~~~~~~~~~~~~~ "Executed if run command exits" -- 2.39.2