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--min-change is now has 1 instead of 200000 as default. fixes #37

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Edwin Eefting 2020-03-29 23:47:26 +02:00
parent 9cf5ce188a
commit bcf73c6e5c
2 changed files with 5 additions and 4 deletions
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5
README.md
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@ -408,7 +408,7 @@ optional arguments:
want a separate send-cronjob)
--min-change MIN_CHANGE
Number of bytes written after which we consider a
dataset changed (default 200000)
dataset changed (default 1)
--allow-empty If nothing has changed, still create empty snapshots.
(same as --min-change=0)
--ignore-replicated Ignore datasets that seem to be replicated some other
@ -533,6 +533,7 @@ Extra options needed for proxmox with HA:
* --no-holds: To allow proxmox to destroy our snapshots if a VM migrates to another node.
* --ignore-replicated: To ignore the replicated filesystems of proxmox on the receiving proxmox nodes. (e.g: only backup from the node where the VM is active)
* --min-change 200000: Ignore replicated works by checking if there are no changes since the last snapshot. However for some reason proxmox always has some small changes. (Probably house-keeping data are something? This always was fine and suddenly changed with an update)
I use the following backup script on the backup server:
@ -540,7 +541,7 @@ I use the following backup script on the backup server:
for H in h4 h5 h6; do
echo "################################### DATA $H"
#backup data filesystems to a common place
./zfs-autobackup --ssh-source root@$H data_smartos03 zones/backup/zfsbackups/pxe1_data --clear-refreservation --clear-mountpoint --ignore-transfer-errors --strip-path 2 --verbose --resume --ignore-replicated --no-holds $@
./zfs-autobackup --ssh-source root@$H data_smartos03 zones/backup/zfsbackups/pxe1_data --clear-refreservation --clear-mountpoint --ignore-transfer-errors --strip-path 2 --verbose --resume --ignore-replicated --min-change 200000 --no-holds $@
zabbix-job-status backup_$H""_data_smartos03 daily $? >/dev/null 2>/dev/null
echo "################################### RPOOL $H"

4
bin/zfs-autobackup
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@ -26,7 +26,7 @@ if sys.stdout.isatty():
except ImportError:
pass
VERSION="3.0-rc8"
VERSION="3.0-rc9"
HEADER="zfs-autobackup v{} - Copyright 2020 E.H.Eefting (edwin@datux.nl)\n".format(VERSION)
class Log:
@ -1453,7 +1453,7 @@ class ZfsAutobackup:
parser.add_argument('--other-snapshots', action='store_true', help='Send over other snapshots as well, not just the ones created by this tool.')
parser.add_argument('--no-snapshot', action='store_true', help='Don\'t create new snapshots (usefull for finishing uncompleted backups, or cleanups)')
parser.add_argument('--no-send', action='store_true', help='Don\'t send snapshots (usefull for cleanups, or if you want a serperate send-cronjob)')
parser.add_argument('--min-change', type=int, default=200000, help='Number of bytes written after which we consider a dataset changed (default %(default)s)')
parser.add_argument('--min-change', type=int, default=1, help='Number of bytes written after which we consider a dataset changed (default %(default)s)')
parser.add_argument('--allow-empty', action='store_true', help='If nothing has changed, still create empty snapshots. (same as --min-change=0)')
parser.add_argument('--ignore-replicated', action='store_true', help='Ignore datasets that seem to be replicated some other way. (No changes since lastest snapshot. Usefull for proxmox HA replication)')
parser.add_argument('--no-holds', action='store_true', help='Don\'t lock snapshots on the source. (Usefull to allow proxmox HA replication to switches nodes)')