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authorPaul Buetow <paul@buetow.org>2026-01-27 10:09:08 +0200
committerPaul Buetow <paul@buetow.org>2026-01-27 10:09:08 +0200
commite72404e83b0dd6953b9ee79911a5adaa3958adfe (patch)
treee739e1fd6ddc130f8f2a74f914191e109c916ffa /gemfeed
parenta856ff03051ae0ed82ef24e133b41b9a202f6d8f (diff)
Update
Diffstat (limited to 'gemfeed')
-rw-r--r--gemfeed/2025-07-14-f3s-kubernetes-with-freebsd-part-6.gmi.tpl110
1 files changed, 55 insertions, 55 deletions
diff --git a/gemfeed/2025-07-14-f3s-kubernetes-with-freebsd-part-6.gmi.tpl b/gemfeed/2025-07-14-f3s-kubernetes-with-freebsd-part-6.gmi.tpl
index 53b9a17b..7e2bf06b 100644
--- a/gemfeed/2025-07-14-f3s-kubernetes-with-freebsd-part-6.gmi.tpl
+++ b/gemfeed/2025-07-14-f3s-kubernetes-with-freebsd-part-6.gmi.tpl
@@ -60,61 +60,6 @@ paul@f1:/ % doas camcontrol devlist
<CT1000BX500SSD1 M6CR072> at scbus1 target 0 lun 0 (pass1,ada1)
```
-## Update: Upgrade to 4TB drives
-
-> Update: 27.01.2026 I have since replaced the 1TB drives with 4TB drives for more storage capacity. The upgrade procedure was different for each node:
-
-### Upgrading f1 (simpler approach)
-
-Since f1 is the replication sink, the upgrade was straightforward:
-
-* 1. Physically replaced the 1TB drive with the 4TB drive
-* 2. Re-setup the drive as described earlier in this blog post
-* 3. Re-replicated all data from f0 to f1 via zrepl
-* 4. Reloaded the encryption keys as described in this blog post
-* 5. Set the mount point again for the encrypted dataset, explicitly as read-only (since f1 is the replication sink)
-
-### Upgrading f0 (using ZFS resilvering)
-
-For f0, which is the primary storage node, I used ZFS resilvering to avoid data loss:
-
-* 1. Plugged the new 4TB drive into an external USB SSD drive reader
-* 2. Attached the 4TB drive to the zdata pool for resilvering
-* 3. Once resilvering completed, detached the 1TB drive from the zdata pool
-* 4. Shutdown f0 and physically replaced the internal drive
-* 5. Booted with the new drive in place
-* 6. Expanded the pool to use the full 4TB capacity:
-
-```sh
-paul@f0:~ % doas zpool online -e /dev/ada1
-```
-
-* 7. Reloaded the encryption keys as described in this blog post
-* 8. Set the mount point again for the encrypted dataset
-
-This was a one-time effort on both nodes - after a reboot, everything was remembered and came up normally. Here are the updated outputs:
-
-```sh
-paul@f0:~ % doas zpool list
-NAME SIZE ALLOC FREE CKPOINT EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT
-zdata 3.63T 677G 2.97T - - 3% 18% 1.00x ONLINE -
-zroot 472G 68.4G 404G - - 13% 14% 1.00x ONLINE -
-
-paul@f0:~ % doas camcontrol devlist
-<512GB SSD D910R170> at scbus0 target 0 lun 0 (pass0,ada0)
-<SD Ultra 3D 4TB 530500WD> at scbus1 target 0 lun 0 (pass1,ada1)
-<Generic Flash Disk 8.07> at scbus2 target 0 lun 0 (da0,pass2)
-```
-
-We're still using different SSD models on f1 (WD Blue SA510 4TB) to avoid simultaneous failures:
-
-```sh
-paul@f1:~ % doas camcontrol devlist
-<512GB SSD D910R170> at scbus0 target 0 lun 0 (pass0,ada0)
-<WD Blue SA510 2.5 4TB 530500WD> at scbus1 target 0 lun 0 (pass1,ada1)
-<Generic Flash Disk 8.07> at scbus2 target 0 lun 0 (da0,pass2)
-```
-
## ZFS encryption keys
ZFS native encryption requires encryption keys to unlock datasets. We need a secure method to store these keys that balances security with operational needs:
@@ -1794,6 +1739,61 @@ Important Considerations:
* Applications should handle brief NFS errors gracefully
* For zero-downtime requirements, consider synchronous replication or distributed storage (see "Future storage explorations" section later in this blog post)
+## Update: Upgrade to 4TB drives
+
+> Update: 27.01.2026 I have since replaced the 1TB drives with 4TB drives for more storage capacity. The upgrade procedure was different for each node!
+
+### Upgrading f1 (simpler approach)
+
+Since f1 is the replication sink, the upgrade was straightforward:
+
+* 1. Physically replaced the 1TB drive with the 4TB drive
+* 2. Re-setup the drive as described earlier in this blog post
+* 3. Re-replicated all data from f0 to f1 via zrepl
+* 4. Reloaded the encryption keys as described in this blog post
+* 5. Set the mount point again for the encrypted dataset, explicitly as read-only (since f1 is the replication sink)
+
+### Upgrading f0 (using ZFS resilvering)
+
+For f0, which is the primary storage node, I used ZFS resilvering to avoid data loss:
+
+* 1. Plugged the new 4TB drive into an external USB SSD drive reader
+* 2. Attached the 4TB drive to the zdata pool for resilvering
+* 3. Once resilvering completed, detached the 1TB drive from the zdata pool
+* 4. Shutdown f0 and physically replaced the internal drive
+* 5. Booted with the new drive in place
+* 6. Expanded the pool to use the full 4TB capacity:
+
+```sh
+paul@f0:~ % doas zpool online -e /dev/ada1
+```
+
+* 7. Reloaded the encryption keys as described in this blog post
+* 8. Set the mount point again for the encrypted dataset
+
+This was a one-time effort on both nodes - after a reboot, everything was remembered and came up normally. Here are the updated outputs:
+
+```sh
+paul@f0:~ % doas zpool list
+NAME SIZE ALLOC FREE CKPOINT EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT
+zdata 3.63T 677G 2.97T - - 3% 18% 1.00x ONLINE -
+zroot 472G 68.4G 404G - - 13% 14% 1.00x ONLINE -
+
+paul@f0:~ % doas camcontrol devlist
+<512GB SSD D910R170> at scbus0 target 0 lun 0 (pass0,ada0)
+<SD Ultra 3D 4TB 530500WD> at scbus1 target 0 lun 0 (pass1,ada1)
+<Generic Flash Disk 8.07> at scbus2 target 0 lun 0 (da0,pass2)
+```
+
+We're still using different SSD models on f1 (WD Blue SA510 4TB) to avoid simultaneous failures:
+
+```sh
+paul@f1:~ % doas camcontrol devlist
+<512GB SSD D910R170> at scbus0 target 0 lun 0 (pass0,ada0)
+<WD Blue SA510 2.5 4TB 530500WD> at scbus1 target 0 lun 0 (pass1,ada1)
+<Generic Flash Disk 8.07> at scbus2 target 0 lun 0 (da0,pass2)
+```
+
## Conclusion
We've built a robust, encrypted storage system for our FreeBSD-based Kubernetes cluster that provides: