Zfs prune snapshots For creating snapshots I have 4 scripts I wrote. Running zfs-prune-snapshots on the system holding the backup destination will take care of this, providing rolloff like that provided with zfs-auto-snapshot. This part works fine, but I need a way to prune out the snapshots on my TrueNAS box over time. So a tool such as sanoid has to be run on TrueNAS remote as well to prune the received snapshots. # zpool create datapool mirror /dev/sdb /dev/sdc # zpool list NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT datapool 1. No new space is consumed by this operation, but the space accounting is adjusted. This option is designed to be run by a Nagios monitoring system. Moderator. --force-prune. there is a zfs prune script designed to delete all snapshots within ranges. There doesn’t seem to be any way to do Creating and destroying a ZFS snapshot is very easy, we can use zfs snapshot and zfs destroy commands for that. 98G - 0% 0% 1. For ZFS users: This guide will show how to setup and take advantage of one of ZFS' most valuable features for restoration, SNAPSHOTS. I highly suggest zfs-prune-snapshots for this task. /zincrsend starting on Fri Dec 4 11:16:00 UTC 2015 processing dataset: goliath/public creating snapshot locally: goliath/public@zincrsend_1449227760 latest remote snapshot: paper/public@zincrsend_1449173284 zfs sending (incremental) @zincrsend_1449173284 -> goliath/public@zincrsend_1449227760 to paper/public receiving incremental stream of goliath/public@zincrsend_1449227760 into paper Remove snapshots from one or more zpools that match given criteria - bahamas10/zfs-prune-snapshots Feb 5, 2025 · monthly_zfs_snapshot_keep="12" Automating Snapshots with Advanced ZFS Snapshot Utilities. こちらが公式です. The snapshot name is formatted @auto-YYYYMMDD-HHMMSS. An example from the docs: Remove snapshots older than a week across all zpools. I have set up a replication task to replicate snapshots from a remote non-TrueNAS system running Ubuntu and ZFS. zfs-prune-snapshots 1w Same as above, but with increased verbosity and without actually deleting any snapshots (dry-run) zfs-prune-snapshots -vn 1w May 31, 2022 · . I’m using TrueNAS Scale for the first time on a home server. Aug 1, 2024 · Notice that these snapshots have no expiration date, as I said, I created them manually; EDIT: I found this script, but I don’t know if it’s still functional GitHub - bahamas10/zfs-prune-snapshots: Remove snapshots from one or more zpools that match given criteria. Purges expired snapshots even if a send/recv is in progress--monitor-snapshots. do NOT use on the boot-pool, as I am not sure how that will interact But Syncoid doesn’t destroy the snapshots that are destroyed in the source from the remote. Dec 14, 2012 · I've pushed new commits that add support for arbitrary intervals so you can set up things like: 2h:24,6h:60,1d:30,weekly:10,monthly That's keep every two hours for 2 days (24 snapshots), every 6 hours for 15 days, 1 day for 30 days, modify the weekly task to save them for 10 weeks, and the default monthly task (made as early as possible in the month and saved for 12 snapshots). conf file, it will NOT create snapshots, but it will purge expired ones. SirDice Administrator. Jan 20, 2020 However, after running this command and a lot of verbose output, when I see what snapshots are left using zfs list -t snapshot it appears that nothing was removed! I went back and looked at the output of the garbage collection command above ( sudo zsysctl --prune-snapshots. EDIT 2: the dry run makes me hopeful There are many tools to create and replicate ZFS snapshots. Another option is just to name them using Sanoid's naming schema. 53G - tank/home@now 0 - 26K - tank/home/ahrens@now 0 - 259M - tank/home/anne@now 0 - 156M - tank/home/bob@now 0 - 156M - tank/home/cindys@now 0 - 104M - Apr 9, 2024 · You can easily identify snapshots created with sanoid because they all start with autosnap_, e. If you name a snapshot in the format "@autosnap_YYYY-MM-DD_hh:mm:ss_hourly", Sanoid will treat it as "one of its own"--including pruning it in accordance with your hourly policy. Multiple snapshots (or ranges of snapshots) of the same filesystem or volume may be specified in a comma-separated list of snapshots. g. Create a pool called datapool . Creating all these snapshots is useful, but it's especially powerful if we can sync them to another server which can act as a backup server or hot spare. usage: zfs-prune-snapshots [-hnliqRvV] [-p <prefix>] [-s <suffix>] <time> [[dataset1] ] remove snapshots from one or more zpools that match given criteria examples # zfs-prune-snapshots 1w remove snapshots older than a week across all zpools # zfs-prune-snapshots -vn 1w same as above, but with increased verbosity and without actually deleting any snapshots (dry-run) # zfs-prune-snapshots 3w Aug 12, 2022 · Use zfs-prune-snapshots, described as: Remove snapshots from one or more zpools that match given criteria. 3M - 4. Jun 8, 2022 · The snapshot that was cloned, and any snapshots previous to this snapshot, are now owned by the promoted clone. 98G 65K 1. link in my signature. I found such a script on github named zfs-prune-snapshots. This morning, I looked at my snapshots in the UI, and saw Remove snapshots from one or more zpools that match given criteria - zfs-prune-snapshots/README. Only the snapshot's short name (the part after the @) should be specified when using a range or comma-separated list to identify multiple snapshots. While zfs-periodic is simple and can be adequate for many use cases, it does have considerable limitations. Mar 22, 2021 · みんみんさんの記事で ZFSのsnapshotをまとめて削除するもございますので、合わせて見てもらえればと思います。 ちなみに私は紹介記事です。 ZFS Prune Snapshots. Administrator. To prune old snapshots, I set up sanoid, but I made some mistakes I fail to see… On pve2, I have many unexpected syncoid snaps for bak1, and vice versa. The space they use moves from the origin file system to the promoted clone, so enough space must be available to accommodate these snapshots. /zfs-prune-snapshots -R -v 1w The script uses zfs destroy under the hood which requires superuser rights. They are called 2w, 6m, 1y, 2y. It can be useful to have more frequent snapshots, and from a ZFS perspective, there are few technical reasons not to create them at a higher frequency. I also have a daily replication task to back up the data, using that snapshot, to an external drive (which is its own pool). On Void, install the zfs-prune-snapshots package, then create a service at /etc/sv Feb 21, 2025 · How To setup automated, Self Rotating and Purging ZFS snapshots. It reports on the health of your snapshots. In my crontab I call the scripts to run on the following times. somewhere (useful links > useful scripts?) this should destroy all snapshots for a specified dataset. Jan 20, 2020 · A. And they also set a custom attribute to the snapshot specifying the time to live (TTL). How do I prune syncoid snapshots? Detailed description of my setup. Rather than an all-in-one solution like zrepl or znapzend (the latter relies heavily on "Z" puns), I rely on three simple shell scripts and some cron jobs: zfs-auto-snapshot, zfs-prune-snapshots and zrep. Staff member. zfs-auto-snapshot, automatically creates, prunes, and purges periodic snapshots. Just run as a cron script daily to cleanup any triggered or dynamic snapshots that have outlived their usefulness: You can create snapshots for all descendent file systems by using the -r option. autosnap_2024-04-09_00:00:00_daily. Apparently the answer is YES. /zfs-prune-snapshots -n -v 1w If you feel comfortable deleting all the listed snapshots, run: sudo . How to prune an existing dataset in truenas, or install sanoid for snapshot management? Apr 18, 2024 · Hi, I’m using syncoid for replication (from host pve1 to pve2 and from pve1 to bak1). Dec 5, 2015 · # . Via cron I run on pve1: syncoid --quiet --identifier=pve2 --no-privilege-elevation Dec 14, 2022 · I suggest zfs-prune-snapshots for this task. For example: # zfs snapshot -r tank/home@now # zfs list -t snapshot NAME USED AVAIL REFER MOUNTPOINT rpool/ROOT/zfs2BE@zfs2BE 78. This will process your sanoid. May 9, 2022 · - Never directly make snapshots of the iX-applications dataset, outside of the SCALE Apps Backup API (for which we've guides available) - Never EVER delete any snapshot of iX-applications dataset - Run daily docker prune commands to get rid of old docker containers and their snapshots. Otherwise one ends up with thousands of snapshots in TrueNAS. --monitor-health Jan 29, 2024 · CLI snapshots are deleted using standard zfs snapshot management commands. このスクリプトを使う事で秒分時日週月年単位によるsnapshotの始末ができます。 Jan 31, 2024 · I thought this would be an easy one, but I must be searching for the wrong thing. Syncing Snapshots with Syncoid. . md at master · bahamas10/zfs-prune-snapshots That means your zfs-auto-snapshot cycles will make their way to the backup tank and never be purged. May 28, 2024 · 创建和销毁 ZFS 快照快照是使用 zfs snapshot 或 zfs snap 命令创建的，该命令采用要创建的快照的名称作为其唯一参数。快照名称按如下方式指定：filesystem@snapnamevolume@snapname快照名称必须满足ZFS 组件命名要求中所述的命名要求。 May 17, 2022 · usage: zfs-prune-snapshots [-hnliqRvV] [-p ] [-s ] [[dataset1] ] remove snapshots from one or more zpools that match given criteria options -h print this message and exit -n dry-run, don't actually delete snapshots -l list only mode, just list matching snapshots names without deleting (like dry-run mode with machine-parseable output) -p Mar 21, 2022 · ZFS driver is more efficient - both in tems of space usage and performance, the switch to overlay2 would mean we'd just be trading the ZFS snapshots for OVERLAYFS layer mounts, and since we're already running ZFS-based filesystems we might as well use it, although as mentioned above, docker devs put the maintenace, so housekeeping, and Mar 10, 2023 · My NAS is currently set up to take daily snapshots of my main pool ("data"), and set to keep them for 2 weeks. The -R flag instructs it to recursively destroy all dependents (children and cloned file systems outside the target hierarchy). 00x ONLINE - Mar 21, 2022 · The only partial fix I found is zfs-prune-snapshots, to remove all snapshots older than a week, for all pools, which trimmed down the 712 snapshots to 365 (many snapshots are 0B which cannot be deleted):. The first two are already packages for Void, while zrep is a simple ksh script. ixgym qtjkzk dkhhe gimhhm raak dxzdq kcte xkihn feync mlsz yemwv owzfld ztzjyc sexsqb eji