Munin contributed plugins

repaired perldoc header: zfs_pool_dataset_count

plugin zfs_list: add "ignore_datasets_pattern" configuration

Allow to ignore certain volumes.

zfs list -t filesystem,volume to suppress snapshots

zfs list might list a bunch of transient snapshots if `zpool
listsnapshots=on` and something like zfs-auto-snapshot is used. It's
also not useful to graph them since they're unchanging in time, and
the parent volume is graphed anyway. Limit zfs list to...

Fixes quota für zvols. Without this, the log gets spammed with

2020/08/16 04:45:24 [ERROR] In RRD: Error updating /var/lib/munin/localdomain/localhost.localdomain-zfs_list_rpool__name-quota-g.rrd: /var/lib/munin/localdomain/localhost.localdomain-zfs_list_rpool__name-quota-g.rrd: Function update_pdp_prep, case DST_GAUGE - Cannot convert '-' to float

Plugin zfs-filesystem-graph: fix here-document

Fix multiple shellcheck issues

replace the / by __ anyway

To make it more clear that we had a subdevice it's better to use the __ for it's replacement anyway

add usage of clean_fieldname

Used the correct munin way by soursing "$MUNIN_LIBDIR/plugins/plugin.sh" and use clean_fieldname.
For the title I removed the replacement of / by __ and on the multigraph value I added the usage of clean_fieldname to make it backwards compatible.

Restructure incomplete or broken "autoconf" implementations

Some plugins with non-zero autoconf exitcodes (it must be zero instead)
deserved a bit of code cleanup for improved readability.

Whitespace cleanup

• remove trailing whitespace
• remove empty lines at the end of files

unify DIRTYCONFIG handling in shell and python plugins

• comparison too broad (e.g. "0" misinterpreted as "true")
• python: comparing string with number (is never equal in python)
• unwanted non-zero exitcode (compound command "&&" as last command in...

Merge pull request #875 from yoe/patch-1

Allow for _ in original dataset name

Allow for _ in original dataset name

The current code escapes / (which is legal as part of a dataset name for ZFS, but illegal as part of a munin graph name) into _ (which is legal for both). The result is that any _ characters in the original filename get changed into / in the legend, which is confusing....

Fix for pullreq #867

Add illumos, FreeBSD, Linux support for zfs_arcstats plugin, cleanup code

[zpool_iostat] keep previous fieldnames

[zpool_iostat] fix whitespace issues

[zpool_iostat] change category from 'filesystem' to 'disk'

[zpool_iostat] enable 'exit_on_error' and 'exit_on_unset' via 'set -eu'

[zpool_iostat] remove usage of temporary file

[zpool_iostat] fix shellcheck warnings

Category Tree: Reduce number of categories
ceph, samba, zfs into "fs"
apache into "webserver"
lighttpd into "webserver"
..

Pass over empty lines in the arcstats
https://github.com/munin-monitoring/contrib/issues/680

If a pool is named something like "m" or "ra" or any string that matches the types of zpool, the grep will match multiple lines.
Adding a space after the zlabel will allow for more exact matching.

Change interpreter to bash, [[ is just better

Refactor of variable assignment method

Merge pull request #563 from elfurbe/zfs_list

Zfs list

zfs-filesystem-graph: remove --upper-limit

Providing a --upper-limit parameter is only useful if the size of the
filesystem never changes. On ZFS, this assumption is only true for the
zpool; for all other filesystems, the available space is shared, and the...

Trying to make this into a one file commit. :|

Added zfsonlinux_stats plugin

Add support for ZFS On Linux

Use perl from $PATH in zfs_usage_ plugin

plugins/zfs/zfs_usage_ add environment variables, call zfs binary only once

Merge pull request #225 from claudius23/patch-1

Update plugins/zfs/zfs_stats_

add license

Update plugins/zfs/zfs_stats_

Don't divide by zero if there is no l2arc

Error output from zfs_stats_cachehitlist:
dc: divide by zero

Extract tarballs committed to git as plugins.

Added a L2ARC efficiency function, also some label consistency changes

Added a L2ARC efficiency function, also some label consistency changes

Removing unnecessary graph_category attributes

Adding a new ZFS statistic plugin