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* fixed weeding

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* added weed_enable option and default it to unset to prevent removing snapshots of unmanaged file systems
* added locking when sending and weeding snapshots
* fixed syslog logging format
This commit is contained in:
Fredrik Eriksson
2017-05-23 20:59:40 +02:00
parent 8617e3c0c6
commit 60095c48d2
3 changed files with 149 additions and 80 deletions
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62
zsnapper.ini-sample
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@ -1,33 +1,60 @@
[settings]
# NOTE:
# --stdin is used to pass password to sudo, this does not work the first time
# a user uses sudo, so make sure to run a sudo command manually first
# zsnapper sample configuration
# Each section is the name of a ZFS file system
# All settings are applied recursively to all file system descendants
#
# or preferably, leave this commented out and use NOPASSWD for sudo...
;sudo=<password>
[tank]
# frequency of snapshots
# Frequency of snapshots
# Set to empty value to disable snapshoting
#
# Interval units are 'd', 'h' and 'm' for days, hours and minutes.
# they can also be combined if you for example wants a snapshot taken every 1 and a half days:
;snapshot_interval=1d 12h
snapshot_interval=1h
# Remote replication
# possible other value is 'latest' to only sync the last available snapshot
# possible other value is 'latest' to only sync the latest snapshot
# Set to empty value to not send the snapshots to remote
remote_enable=all
# The remote_zfs_cmd option is the command to use to execute zfs on target machine.
# remote_test_cmd, if set, is executed before trying to send any snapshot to remote.
# If remote_test_cmd returns a non-zero status the remote is considered to be unavailable
# and no snapshots are sent. (A warning is written in the log though)
#
# NOTE:
# The command arguments must not contain whitespace characters, since
# split() is used to create an array to subprocess.Popen()
# The command arguments must not contain whitespace characters, due to implementation details.
#
# Variables can be used in remote_zfs_cmd and remote_test_cmd. Any setting
# available in the section can be used as a variable
remote_zfs_cmd=/usr/bin/ssh ${remote_user}@${remote_host} /usr/bin/sudo /sbin/zfs
remote_test_cmd=/usr/bin/ssh ${remote_user}@${remote_host} echo "success"
# The remote_host option is optional but recommended if you send snapshots to a remote host.
remote_host=my.backup.server.tld
# remote_user is not a actually a zsnapper option; but it's used as a variable in the remote commands.
remote_user=backup
remote_host=hem.winterbird.org
remote_zfs_target=tank/backup/asuna/tank
# remote_zfs_target is the file system on the remote client that should receive zfs sends
# for this file system.
# NOTE:
# Just like any other option this is inherited by file system descendants,
# but if a child has the same remote_zfs_target as the parent, the child
# will instead use this to figure out where the parent is and be sent to
# it position relative to the parent.
# For example: The local file system tank/ROOT will be sent to tank/backup/client/ROOT.
remote_zfs_target=tank/backup/client
# These can be set to use custom arguments to zfs send and zfs receive
; remote_send_flags=-D -p
remote_send_flags=
remote_send_flags=-D -p
remote_recv_flags=
# snapshot weeding
# set weed_enable to an empty value to disable snapshot weeding.
# NOTE:
# If weeding is enabled but no keep_<time> setting is configured all
# your snapshots, except the latest, will be removed. Make sure to
# configure your weeding settings carefully.
weed_enable=1
keep_hourly=24
keep_daily=7
keep_weekly=4
@ -39,7 +66,8 @@ snapshot_interval=
remote_enable=
[tank/media]
snapshot_interval=15m
snapshot_interval=
remote_enable=
[tank/tmp]
snapshot_interval=