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--- misc_docs:auto_zfs_snapshots [2022/09/16 20:32] – [Pool Snapshots] crashtest
+++ misc_docs:auto_zfs_snapshots [2025/02/21 19:55] (current) – [Automated ZFS Snapshots for Openmediavault] crashtest
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-<html><center><strong>Automated ZFS Snapshots for Openmediavault</strong></center></html>
-{{ :zfs1.jpg?400 |}}
-====== Automated ZFS Snapshots for Openmediavault ======
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-<html><center><strong>How To setup automated, Self  Rotating and Purging ZFS snapshots</strong></center></html>
+===== Automated ZFS Snapshots for Openmediavault =====
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+{{ :zfs1.jpg?400 |}}
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-This document can be converted to a PDF file, in the user's language of choice (see the following), on Windows, Mac's and popular Linux desktop platforms. Simply select the printer icon on the upper right corner of this web page. When prompted at the client, select “print to PDF”, name and save the file.
+<html><center><span style="font-size:200%;">How To setup automated, Self  Rotating and Purging ZFS snapshots</span></center></html>
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-===== Automated ZFS Snapshots =====
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 **For ZFS users:**\\
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 **Tested:**\\
-July 2022: With openmediavault 6 and Debian 11 (Bullseye).\\
+February 2025: **With openmediavault 7** and Debian 12 (Bookworm).\\
-December 2020:  With openmediavault 5 and Debian 10 (Buster).\\
+July 2022: **With openmediavault 6** and Debian 11 (Bullseye).\\
-Tested, prior, with openmediavault 4 and Debian 9.\\
+December 2020:  **With openmediavault 5** and Debian 10 (Buster).\\
+Tested, prior, **With openmediavault 4** and Debian 9.\\
 ----
@@ Line 59: / Line 52: @@
 \\
 If the output of the above is; “''-bash: unzip: command not found''” do the following on the command line:\\
-''apt install unzip'' \\
+''apt-get install make unzip'' \\
 Then rerun the unzip command: \\
 ''unzip master.zip'' \\
@@ Line 106: / Line 99: @@
 zfs set com.sun:auto-snapshot:monthly=**false** Rocky\\
 \\
-Time intervals where a snapshot is desired are set to **true**.  Intervals that are not desired are set to false.
+Time intervals where a snapshot is desired are set to **true**.  Intervals that are not desired are set to **false**.
 In this example, with all intervals up to “weekly” set to “true”, the pool “Rocky” will have a snapshot recorded 4 times an hour (4 total), once per hour (24 total), once a day (31 total), and once a week (7 total).  In this case, it would be possible roll this pool back to any one of several snapshots taken during the past 7 weeks.
 Again, in the example above, **true** is assumed on all lines.  To turn off monthly snapshots for the pool named Rocky, a single command is required:
@@ Line 187: / Line 180: @@
 The contents of any snapshot can be copied from the snapshot to replace or overwrite any part of, or all of, the current top level file system.  (*Provided that the client has “write” access to the share.*)
-For businesses and users, going back to a time before malware existed on a share; this feature can be utilized as a ransomware or virus “Killer”.  In such a scenario, be sure to work from the server using a package like Midnight Commander (''apt-get mc'') or use a known clean mal-ware free client.
+For businesses and users, being able to rollback or restore individual files from a time before malware existed on a share; these features can be utilized as a ransomware or virus “Killer”.  In such scenarios, be sure to work from the server using a package like Midnight Commander (''apt-get mc'') or use a known clean malware free client.
 **Caution**:\\
-The above will make all of the current filesystem's files AND all past versions within snapshots look like nested but individual (separate) files and folders, complete with a unique directory structure (the snapshot names).
+The above will make all of the current filesystem's files AND all past versions within snapshots look like nested but individual (separate) files and folders, complete with a unique directory structure (the snapshot names).\\
-If the snapshot directory is visible and an rsync job or any other backup type runs, pulling files from the share, the destination will be **OVER RUN** with multiple versions of the same files and folders.  It is **IMPORTANT** to turn off any type of server share backup job before using this command.
+If the snapshot directory is **visible** and an rsync job or any other backup type runs that pulls files from the share, the destination will be **OVER RUN** with multiple versions of the same files and folders.  It is **IMPORTANT** to turn off any type of server share backup job before using this command.
 Equally important is the need for any copy, paste or replace operations, from past snapshots to the current file system, to be “//**surgical**//”.