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Add new znapzend features to modules

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Rail Aliiev 2020-03-23 16:13:06 -04:00
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35
nixos/modules/services/backup/znapzend.nix
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@ -372,6 +372,41 @@ in
and <citerefentry><refentrytitle>zfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>
for more info.
'';
features.sendRaw = mkEnableOption ''
sendRaw feature which adds the options <literal>-w</literal> to the
<command>zfs send</command> command. For encrypted source datasets this
instructs zfs not to decrypt before sending which results in a remote
backup that can't be read without the encryption key/passphrase, useful
when the remote isn't fully trusted or not physically secure. This
option must be used consistently, raw incrementals cannot be based on
non-raw snapshots and vice versa.
'';
features.skipIntermediates = mkEnableOption ''
Enable the skipIntermediates feature to send a single increment
between latest common snapshot and the newly made one. It may skip
several source snaps if the destination was offline for some time, and
it should skip snapshots not managed by znapzend. Normally for online
destinations, the new snapshot is sent as soon as it is created on the
source, so there are no automatic increments to skip.
'';
features.lowmemRecurse = mkEnableOption ''
use lowmemRecurse on systems where you have too many datasets, so a
recursive listing of attributes to find backup plans exhausts the
memory available to <command>znapzend</command>: instead, go the slower
way to first list all impacted dataset names, and then query their
configs one by one.
'';
features.zfsGetType = mkEnableOption ''
use zfsGetType if your <command>zfs get</command> supports a
<literal>-t</literal> argument for filtering by dataset type at all AND
lists properties for snapshots by default when recursing, so that there
is too much data to process while searching for backup plans.
If these two conditions apply to your system, the time needed for a
<literal>--recursive</literal> search for backup plans can literally
differ by hundreds of times (depending on the amount of snapshots in
that dataset tree... and a decent backup plan will ensure you have a lot
of those), so you would benefit from requesting this feature.
'';
};
};