29 lines
1.7 KiB
Markdown
29 lines
1.7 KiB
Markdown
**Purpose**:
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The purpose of this workflow is to illustrate the process of expanding storage for a Linux server that uses an iSCSI-based ZFS storage. We want the VM to have more storage space, so this document will go over the steps to expand that usable space.
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!!! info "Assumptions"
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It is assumed you are using an Ubuntu based operating system, as these commands may not be the same on other distributions of Linux.
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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.
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## Increase iSCSI Disk Size
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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.
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## Extend ZFS Pool
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This step goes over how to increase the usable space of the ZFS pool within the server itself after it was expanded.
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``` sh
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iscsiadm -m session --rescan # (1)
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parted /dev/sdX # (2)
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unit TB # (3)
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resizepart X XXTB # (4)
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zpool online -e <POOL-NAME> /dev/sdX # (5)
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zpool scrub <POOL-NAME> # (6)
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```
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1. Re-scan iSCSI targets for changes.
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2. Open partitioning utility on the ZFS volume / LUN / iSCSI disk. Replace `dev/sdX` with the actual device name.
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3. Self-explanatory storage measurement.
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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`.
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5. Brings the ZFS Pool back online. Replace `<POOL-NAME>` with the actual name of the ZFS pool.
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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. |