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Update Workflows/Linux/Expand iSCSI-Based ZFS Filesystem.md

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Nicole Rappe
2025-01-14 18:28:34 -07:00
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Workflows/Linux/Expand iSCSI-Based ZFS Filesystem.md
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@ -7,23 +7,34 @@ The purpose of this workflow is to illustrate the process of expanding storage f
This document also assumes you did not enable Logical Volume Management (LVM) when deploying your server. If you did, you will need to perform additional LVM-specific steps after increasing the space.
## Increase iSCSI Disk Size
This part should be fairly straight-forward. Using whatever hypervisor/storage appliance hosting the iSCSI target, expand the disk space of the LUN to the desired size.
This part should be fairly straight-forward. Using whatever hypervisor / storage appliance hosting the iSCSI target, expand the disk space of the LUN to the desired size.
## Extend ZFS Pool
This step goes over how to increase the usable space of the ZFS pool within the server itself after it was expanded.
``` sh
iscsiadm -m session --rescan # (1)
parted /dev/sdX # (2)
unit TB # (3)
resizepart X XXTB # (4)
zpool online -e <POOL-NAME> /dev/sdX # (5)
zpool scrub <POOL-NAME> # (6)
lsblk # (2)
parted /dev/sdX # (3)
unit TB # (4)
resizepart X XXTB # (5)
zpool list # (6)
zpool online -e <POOL-NAME> /dev/sdX # (7)
zpool scrub <POOL-NAME> # (8)
```
1. Re-scan iSCSI targets for changes.
2. Open partitioning utility on the ZFS volume / LUN / iSCSI disk. Replace `dev/sdX` with the actual device name.
3. Self-explanatory storage measurement.
4. Resizes whatever partition is given to fit the new storage capacity. Replace `X` with the partition number. Replace `XXTB` with a valid value, such as `10TB`.
5. Brings the ZFS Pool back online. Replace `<POOL-NAME>` with the actual name of the ZFS pool.
6. This tells the system to scan the ZFS pool for any errors or corruption and correct them. Think of it as a form of housekeeping.
2. Leverage `lsblk` to ensure that the storage size increase from the hypervisor / storage appliance reflects correctly.
3. Open partitioning utility on the ZFS volume / LUN / iSCSI disk. Replace `dev/sdX` with the actual device name.
4. Self-explanatory storage measurement.
5. Resizes whatever partition is given to fit the new storage capacity. Replace `X` with the partition number. Replace `XXTB` with a valid value, such as `10TB`.
6. This will allow you to list all ZFS pools that are available for the next command.
7. Brings the ZFS Pool back online. Replace `<POOL-NAME>` with the actual name of the ZFS pool.
8. This tells the system to scan the ZFS pool for any errors or corruption and correct them. Think of it as a form of housekeeping.
## Check on Scrubbing Progress
At this point, the ZFS pool has been expanded and a scrub task has been started. The scrubbing task can take several hours / dayas to run, so to keep track of it, you can run the following command to check the status of the ZFS pool / scrubbing task.
```sh
zpool status
```