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108 lines
2.4 KiB
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108 lines
2.4 KiB
Plaintext
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= VBLADE-PERSISTENCE(5)
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== NAME
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vblade-persistence - description of the vblade persistence
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== DESCRIPTION
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vblade-persistence uses the files in `/etc/vblade.conf.d/` to manage
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exports. File names must end in `.conf`. The "instance" name is the
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file name without `.conf`.
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The file format is a POSIX shell fragment.
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The following variables *must* be defined: `netif`, `shelf`, `slot`,
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and `filename`. See vblade(8) for their meaning. Incomplete
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configuration files are ignored, so are files that are not a valid
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shell syntax.
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Additionally, the following variables may be defined:
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* `options`
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Any options as provided by vblade(7).
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* `ionice`
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Use these to define an I/O scheduling class and level for that export.
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The value must be understood by ionice(1).
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== EXAMPLE
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----
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shelf=14
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slot=2
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netif=ens3
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filename=/dev/mapper/export
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options='-r -m 11:22:33:44:55:66,22:33:44:55:66:77 -o 8'
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ionice='--class best-effort --classdata 7'
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----
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== USAGE
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=== On systems using systemd
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Install `vblade-generator` in `/lib/systemd/system-generators/`, and
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both `vblade.service` and `vblade@.service` in `/lib/systemd/system/`.
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Enable the vblade service, reload systemd. Additional units for each
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export should appear, named `vblade@<instance>.service`.
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=== On systems using SysV init
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Individual instances may be controlled by providing their name as
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a second option, e.g.
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----
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/etc/init.d/vblade status demo
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----
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Two different init scripts are available:
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==== `vblade.init.lsb-daemon`
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Uses LSB functions and daemon(1) program to control the instance.
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Pros: daemon(1) is a very fine tool for this, providing also respawning
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and output redirection.
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==== `vblade.init.daemon`
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As above, but without using LSB functions.
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Pros: Should be fairly portable, no thrills.
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==== Template
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The template for these scripts is `vblade.init.in`, the actual
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templating is done using tpage(1p), see `vblade.init.generate`.
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Support for using Debian's start-stop-daemon has been prepared but
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requires pid file supprt in vblade to be usable.
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== BUGS
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On SysV init systems, the configuration files are always sourced as
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shell scripts. On systemd systems, the configuration file is just
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a key/value store without shell expansion.
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It's a wise idea to run `sh -n` against a configuration file after any
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modification for basic format validation.
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== SEE ALSO
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daemon: <http://www.libslack.org/daemon/>
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tpage(1p)
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vblade(8)
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== AUTHOR
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Christoph Biedl <sourceforge.bnwi@manchmal.in-ulm.de>
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