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IT Notes<b>Make Your Own Backup System – Part 2: Forging the FreeBSD Backup Stronghold</b><br><br><a href="https://it-notes.dragas.net/2025/07/29/make-your-own-backup-system-part-2-forging-the-freebsd-backup-stronghold/" rel="nofollow noopener" target="_blank">https://it-notes.dragas.net/2025/07/29/make-your-own-backup-system-part-2-forging-the-freebsd-backup-stronghold/</a><br><br><a href="https://snac.it-notes.dragas.net?t=itnotes" class="mention hashtag" rel="nofollow noopener" target="_blank">#ITNotes</a> <a href="https://snac.it-notes.dragas.net?t=notehub" class="mention hashtag" rel="nofollow noopener" target="_blank">#NoteHUB</a> <a href="https://snac.it-notes.dragas.net?t=backup" class="mention hashtag" rel="nofollow noopener" target="_blank">#backup</a> <a href="https://snac.it-notes.dragas.net?t=bhyve" class="mention hashtag" rel="nofollow noopener" target="_blank">#bhyve</a> <a href="https://snac.it-notes.dragas.net?t=borg" class="mention hashtag" rel="nofollow noopener" target="_blank">#borg</a> <a href="https://snac.it-notes.dragas.net?t=data" class="mention hashtag" rel="nofollow noopener" target="_blank">#data</a> <a href="https://snac.it-notes.dragas.net?t=filesystems" class="mention hashtag" rel="nofollow noopener" target="_blank">#filesystems</a> <a href="https://snac.it-notes.dragas.net?t=freebsd" class="mention hashtag" rel="nofollow noopener" target="_blank">#freebsd</a> <a href="https://snac.it-notes.dragas.net?t=jail" class="mention hashtag" rel="nofollow noopener" target="_blank">#jail</a> <a href="https://snac.it-notes.dragas.net?t=ownyourdata" class="mention hashtag" rel="nofollow noopener" target="_blank">#ownyourdata</a> <a href="https://snac.it-notes.dragas.net?t=proxmox" class="mention hashtag" rel="nofollow noopener" target="_blank">#proxmox</a> <a href="https://snac.it-notes.dragas.net?t=series" class="mention hashtag" rel="nofollow noopener" target="_blank">#series</a> <a href="https://snac.it-notes.dragas.net?t=server" class="mention hashtag" rel="nofollow noopener" target="_blank">#server</a> <a href="https://snac.it-notes.dragas.net?t=snapshots" class="mention hashtag" rel="nofollow noopener" target="_blank">#snapshots</a> <a href="https://snac.it-notes.dragas.net?t=sysadmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#sysadmin</a> <a href="https://snac.it-notes.dragas.net?t=tutorial" class="mention hashtag" rel="nofollow noopener" target="_blank">#tutorial</a> <a href="https://snac.it-notes.dragas.net?t=virtualization" class="mention hashtag" rel="nofollow noopener" target="_blank">#virtualization</a> <a href="https://snac.it-notes.dragas.net?t=vps" class="mention hashtag" rel="nofollow noopener" target="_blank">#vps</a> <a href="https://snac.it-notes.dragas.net?t=zfs" class="mention hashtag" rel="nofollow noopener" target="_blank">#zfs</a><br>
Practical ZFS - Discussions<a href="https://discourse.practicalzfs.com/t/zfs-pool-migration-on-smartos-best-way-to-migrate-data/2612" rel="nofollow noopener" target="_blank">ZFS pool migration on SmartOS: best way to migrate data</a><br> <p></p><p>Hi all,</p> <p>I’m planning to migrate off a degraded RAIDZ1 pool on aging hardware (SmartOS global zone, ~7 years old) and would appreciate input on the cleanest way to do this.</p> <p>I’ll be adding 3x new 4TB SATA enterprise disks (likely Seagate Exos), and the plan is to:</p> <ol> <li>Create a new pool with the new drives (RAIDZ1)</li> <li>Migrate all data from the current <code>zones</code> pool</li> <li>Preserve existing dataset structure and mountpoints</li> <li>Retire the old pool</li> </ol> <p>Is <code>zfs send</code> the best (and only) proper way to do this migration on SmartOS, especially for datasets like zones and images? Can I do that in a way that the new pool is called <code>zones</code> as well in the end? Ideally SmartOS would just accept the new pool after the migration.</p> <p>Anything I should watch out for?</p> <p>Also, would anyone advise against the Seagate Exos drives for this use? Didn’t buy new hardware for a while…</p> <p>Thanks,<br> Adrian</p> <p>1 post - 1 participant</p> <p><a href="https://discourse.practicalzfs.com/t/zfs-pool-migration-on-smartos-best-way-to-migrate-data/2612" rel="nofollow noopener" target="_blank">Read full topic</a></p><p></p><p><a href="https://feedsin.space/tags/zfs" class="mention hashtag" rel="nofollow noopener" target="_blank">#zfs</a></p>
JSkier :archlinux: :debian:<p>Me rebooting my <a href="https://social.linux.pizza/tags/archlinux" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>archlinux</span></a> <a href="https://social.linux.pizza/tags/zfs" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>zfs</span></a> <a href="https://social.linux.pizza/tags/nas" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>nas</span></a> box this morning after updating the kernel. </p><p>Both zpools came back up, and all containers 😀 </p><p><a href="https://social.linux.pizza/tags/homelab" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>homelab</span></a></p>
vermaden<p>Latest 𝗩𝗮𝗹𝘂𝗮𝗯𝗹𝗲 𝗡𝗲𝘄𝘀 - 𝟮𝟬𝟮𝟱/𝟬𝟳/𝟮𝟴 (Valuable News - 2025/07/28) available.</p><p> <a href="https://vermaden.wordpress.com/2025/07/28/valuable-news-2025-07-28/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">vermaden.wordpress.com/2025/07</span><span class="invisible">/28/valuable-news-2025-07-28/</span></a></p><p>Past releases: <a href="https://vermaden.wordpress.com/news/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">vermaden.wordpress.com/news/</span><span class="invisible"></span></a></p><p><a href="https://mastodon.bsd.cafe/tags/verblog" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>verblog</span></a> <a href="https://mastodon.bsd.cafe/tags/vernews" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>vernews</span></a> <a href="https://mastodon.bsd.cafe/tags/news" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>news</span></a> <a href="https://mastodon.bsd.cafe/tags/bsd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>bsd</span></a> <a href="https://mastodon.bsd.cafe/tags/freebsd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>freebsd</span></a> <a href="https://mastodon.bsd.cafe/tags/openbsd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>openbsd</span></a> <a href="https://mastodon.bsd.cafe/tags/netbsd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>netbsd</span></a> <a href="https://mastodon.bsd.cafe/tags/linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>linux</span></a> <a href="https://mastodon.bsd.cafe/tags/unix" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>unix</span></a> <a href="https://mastodon.bsd.cafe/tags/zfs" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>zfs</span></a> <a href="https://mastodon.bsd.cafe/tags/opnsense" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>opnsense</span></a> <a href="https://mastodon.bsd.cafe/tags/ghostbsd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ghostbsd</span></a> <a href="https://mastodon.bsd.cafe/tags/solaris" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>solaris</span></a> <a href="https://mastodon.bsd.cafe/tags/vermadenday" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>vermadenday</span></a></p>
vermaden<p>Latest 𝗩𝗮𝗹𝘂𝗮𝗯𝗹𝗲 𝗡𝗲𝘄𝘀 - 𝟮𝟬𝟮𝟱/𝟬𝟳/𝟮𝟴 (Valuable News - 2025/07/28) available.</p><p> <a href="https://vermaden.wordpress.com/2025/07/28/valuable-news-2025-07-28/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">vermaden.wordpress.com/2025/07</span><span class="invisible">/28/valuable-news-2025-07-28/</span></a></p><p>Past releases: <a href="https://vermaden.wordpress.com/news/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">vermaden.wordpress.com/news/</span><span class="invisible"></span></a></p><p><a href="https://mastodon.social/tags/verblog" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>verblog</span></a> <a href="https://mastodon.social/tags/vernews" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>vernews</span></a> <a href="https://mastodon.social/tags/news" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>news</span></a> <a href="https://mastodon.social/tags/bsd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>bsd</span></a> <a href="https://mastodon.social/tags/freebsd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>freebsd</span></a> <a href="https://mastodon.social/tags/openbsd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>openbsd</span></a> <a href="https://mastodon.social/tags/netbsd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>netbsd</span></a> <a href="https://mastodon.social/tags/linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>linux</span></a> <a href="https://mastodon.social/tags/unix" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>unix</span></a> <a href="https://mastodon.social/tags/zfs" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>zfs</span></a> <a href="https://mastodon.social/tags/opnsense" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>opnsense</span></a> <a href="https://mastodon.social/tags/ghostbsd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ghostbsd</span></a> <a href="https://mastodon.social/tags/solaris" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>solaris</span></a> <a href="https://mastodon.social/tags/vermadenday" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>vermadenday</span></a></p>
Stephen McNamara<p>How I'm using <a href="https://mastodon.social/tags/zfs" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>zfs</span></a> and <a href="https://mastodon.social/tags/sanoid" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sanoid</span></a> with <a href="https://mastodon.social/tags/nixos" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>nixos</span></a> to create a pre-hook for nixos-rebuild to snapshot directories prior to system builds, extending NixOS generations for rollback protection.</p><p>You are right, nixos-rebuild doesn't support pre-hook so this is a wrapper script that acts as one.</p><p><a href="https://noflcl.codeberg.page/blog/2025/07/22/more-than-generations/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">noflcl.codeberg.page/blog/2025</span><span class="invisible">/07/22/more-than-generations/</span></a></p>
@doctator (0xDEADBEEF)<p>wellp, TIL it's a lot easier to yank drives and replace them to upgrade them. <a href="https://infosec.exchange/tags/ZFS" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ZFS</span></a></p>
pilviboksi.fi<p>Miltä kuulostaisi kotimainen, edullinen rsync.net -vaihtoehto varmuuskopioille?</p><p>Ehkäpä jopa ZFS send/receive?</p><p><a href="https://sauna.social/tags/pilviboksi" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>pilviboksi</span></a> <a href="https://sauna.social/tags/zfs" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>zfs</span></a> <a href="https://sauna.social/tags/varmuuskopiot" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>varmuuskopiot</span></a></p>
Luna Lactea<p>I wish that when I add another mirror to a vdev in ZFS it would only scan that vdev to resilver because it would be way faster than scanning the entire zpool. I can't find a way to do this though. The current estimated time for resilvering less than 80GiB. is "no estimated completion time", but occasionally goes down to "3 days", even though it should take less than an hour &amp; a half.</p><p>It seems like scanning the entire zpool instead of only the affected one is wasting bandwidth, causing the resilvering data to be issued at very low speed (5MiB./s.). I bet more CPU time &amp; memory could be used for it to speed it up a little too because it's currently using very little resources. Are there some settings I can adjust to change how ZFS handles resilvering &amp; system resource usage?</p><p><a href="https://furry.engineer/tags/ZFS" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ZFS</span></a> <a href="https://furry.engineer/tags/OpenZFS" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>OpenZFS</span></a> <a href="https://furry.engineer/tags/ZFSOnLinux" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ZFSOnLinux</span></a> <a href="https://furry.engineer/tags/Linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Linux</span></a></p>
Damiano Verzulli<p>Just spent some hours writing down an <a href="https://fosstodon.org/tags/ansible" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ansible</span></a> playbook to deploy a custom image of <a href="https://fosstodon.org/tags/docker" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>docker</span></a>-volume-backup, properly built by my (self-hosted) <a href="https://fosstodon.org/tags/gitlab_ci" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>gitlab_ci</span></a> , to backup the three persistent volumes required by my (self-hosted) <a href="https://fosstodon.org/tags/passbolt" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>passbolt</span></a> instance, sending the backup to a remote <a href="https://fosstodon.org/tags/rsync" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>rsync</span></a> server, where underlying <a href="https://fosstodon.org/tags/zfs" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>zfs</span></a> will take care to snapshot and keep safely.</p><p>Bonus: during backup, required containers are stopped, and started afterwords.</p><p>...and (incredibly/amazingly!) it worked! </p><p>Time to relax :-)</p>
Helio Loureiro<p>The zfs upgrade bug has progressed quite well.</p><p>Yesterday I managed to upgrade my laptop to Ubuntu's Plucky release.</p><p><a href="https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/2110891" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">bugs.launchpad.net/ubuntu/+sou</span><span class="invisible">rce/ubuntu-release-upgrader/+bug/2110891</span></a></p><p><a href="https://mastodon.social/tags/ubuntu" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ubuntu</span></a> <br><a href="https://mastodon.social/tags/zfs" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>zfs</span></a></p>
Jeff Moss<p>Anyone have any experience running <a href="https://defcon.social/tags/ZFS" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ZFS</span></a> on Windows? It's been around a while and still under active development.</p><p>It feels not ready for production, but I'm looking for something to switch away from BTRFS on a NAS for long term storage, not highest performance.</p><p><a href="https://github.com/openzfsonwindows/openzfs" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">github.com/openzfsonwindows/op</span><span class="invisible">enzfs</span></a></p>
Tobias Schäfer<p>Unlocking Your Encrypted ZFS Root with YubiKey on Debian - How to enhance boot-time security for encrypted ZFS root filesystems on Debian using YubiKey-based two-factor authentication.</p><p><a href="https://blog.tschaefer.org/posts/2025/07/25/unlocking-your-encrypted-zfs-root-with-yubikey-on-debian/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">blog.tschaefer.org/posts/2025/</span><span class="invisible">07/25/unlocking-your-encrypted-zfs-root-with-yubikey-on-debian/</span></a></p><p><a href="https://m.fru.bar/tags/security" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>security</span></a> <a href="https://m.fru.bar/tags/zfs" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>zfs</span></a> <a href="https://m.fru.bar/tags/debian" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>debian</span></a> <a href="https://m.fru.bar/tags/yubikey" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>yubikey</span></a></p>
Practical ZFS - Discussions<a href="https://discourse.practicalzfs.com/t/best-practice-for-storing-incremental-clonezilla-images-raw-using-dd-zfs-dedup-or-snapshots/2607" rel="nofollow noopener" target="_blank">Best Practice for Storing Incremental Clonezilla Images (raw using dd): ZFS Dedup or Snapshots?</a><br> <p></p><p>Thanks in advance for any advice!</p> <p>I have an external ZFS backup pool connected via USB that I use to store Clonezilla images of entire drives (these drives aren’t ZFS, but ext4)</p> <p>My source drive is 1TB, and my destination pool is 2TB, so storage capacity isn’t an issue. I’d like to optimize for space by doing incremental backups, and initially thought deduplication would be perfect, since I’d be making similar images of the same drive with periodic updates (about once a month). The idea was to keep image files named by their backup date, and rely on deduplication to save space due to the similarity between backups.</p> <p>I tested this, and it worked quite well.</p> <p>Now I’m wondering if deduplication is even necessary if I use snapshots. For example, could I take a snapshot before each overwrite, keeping a single image filename and letting ZFS snapshots preserve historical versions automatically? The Clonezilla options I’m using create images that are non-compressed and non-encrypted. I don’t need encryption, and the pool already has compression enabled.</p> <p>Would using snapshots alone be more efficient, or is there still a benefit to deduplication in this workflow? I’d appreciate any advice! I’ve got lots of memory so that isn’t a concern. Maybe I should use both together?</p> <p>thanks!</p> <p>1 post - 1 participant</p> <p><a href="https://discourse.practicalzfs.com/t/best-practice-for-storing-incremental-clonezilla-images-raw-using-dd-zfs-dedup-or-snapshots/2607" rel="nofollow noopener" target="_blank">Read full topic</a></p><p></p><p><a href="https://feedsin.space/tags/zfs" class="mention hashtag" rel="nofollow noopener" target="_blank">#zfs</a></p>
@doctator (0xDEADBEEF)<p>join the collective. failzero<br><a href="https://discord.gg/QzqvEFpJ" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">discord.gg/QzqvEFpJ</span><span class="invisible"></span></a><br><a href="https://infosec.exchange/tags/ZFS" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ZFS</span></a> <a href="https://infosec.exchange/tags/Linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Linux</span></a> <a href="https://infosec.exchange/tags/UNIX" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>UNIX</span></a> <a href="https://infosec.exchange/tags/btrfs" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>btrfs</span></a> <a href="https://infosec.exchange/tags/bsd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>bsd</span></a> <a href="https://infosec.exchange/tags/freebsd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>freebsd</span></a> <a href="https://infosec.exchange/tags/openbsd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>openbsd</span></a> <a href="https://infosec.exchange/tags/hardenedbsd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>hardenedbsd</span></a></p>
Quentin Stafford-Fraser<p>Just upgraded my home servers to NixOS 25.05, and now I’m doing my first ZFS RAIDz expansion! Pretty wild Friday night here! </p><p>The little NUC-type machine I use as the target for my ZFS backups had 2x 8TB disks in a RAIDZ1. It now has a third. OK, OK, I know my old Synology was able to expand its RAID trivially even when I got it a decade ago, but this is still very nice to have. <a href="https://mastodon.me.uk/tags/nixos" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>nixos</span></a> <a href="https://mastodon.me.uk/tags/zfs" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>zfs</span></a></p>
@doctator (0xDEADBEEF)<p><a href="https://infosec.exchange/tags/BTRFS" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>BTRFS</span></a> ... for people who want <a href="https://infosec.exchange/tags/ZFS" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ZFS</span></a> but don't want to commit to marriage? lol</p>
@doctator (0xDEADBEEF)<p>im spoiled. I've been running <a href="https://infosec.exchange/tags/proxmox" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>proxmox</span></a> for too damn long, and I'm now tending to try to boot multiple OSes on my workstation using dual drives, like LPARs or something <a href="https://infosec.exchange/tags/IBM" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>IBM</span></a> <a href="https://infosec.exchange/tags/ZFS" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ZFS</span></a></p>
Recovered Expert<p>It’s amazing how much energy is put into half baked attempts to replicate some features of ZFS by those who refuse to use <a href="https://mastodon.social/tags/ZFS" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ZFS</span></a> .</p><p>NIH dialed to 11 🙄</p>
Practical ZFS - Discussions<a href="https://discourse.practicalzfs.com/t/zfs-bookmarks-i-dont-get-it/2603" rel="nofollow noopener" target="_blank">ZFS Bookmarks - I don't get it</a><br> <p></p><p>I’ve read <a href="https://discourse.practicalzfs.com/t/curious-as-to-the-utility-of-zfs-bookmarks/1890" class="" rel="nofollow noopener" target="_blank">Curious as to the utility of ZFS bookmarks</a> and some other stuff on the internet, and something isn’t making it through to my brain here.</p> <p>So you have a source and a destination.</p> <ul> <li>On Monday, on the source you make a pool called tank, and create a file called ONE<br> You snapshot it, and bookmark it, and send the snapshot to the destination</li> <li>On Tuesday, you repeat the process</li> <li>On Wednesday, you create a file called TWO, snapshot and bookmark on the source only</li> <li>On Thursday, you delete TWO and create THREE, snapshot and bookmark on the source only</li> <li>On Friday, delete THREE, snapshot and bookmark on the source, then delete the Monday, Tuesday and Wednesday snapshots.</li> </ul> Day Src Snap Src bookmark Destination Snap Dest Bookmark Mon x x x Tue x x x Wed x Thu x x Fri x x <p>So now it’s the weekend and we want to catch the destination up to the source.<br> They have no snapshot in common. Apparently, you do it with the bookmarks.</p> <p>The big question … How the heck can this work? TWO and THREE no longer exist on the source. There’s no snapshot holding that data. I don’t get how they can be resurrected. Do we end up with Mon, Tue, Fri snapshots and just file ONE on the dest and whatever other changes happened in the middle are gone?</p> <p>Smaller question - Do I understand correctly, syncoid will use the bookmarks automatically if they exist and are helpful?</p> <p>As I’ve written this out (thanks for being my rubber duckie) I guess I could just go do and see, but I’d still like to ask how to understand the how better.</p> <p>1 post - 1 participant</p> <p><a href="https://discourse.practicalzfs.com/t/zfs-bookmarks-i-dont-get-it/2603" rel="nofollow noopener" target="_blank">Read full topic</a></p><p></p><p><a href="https://feedsin.space/tags/zfs" class="mention hashtag" rel="nofollow noopener" target="_blank">#zfs</a></p>