computing:zfsreminders
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| computing:zfsreminders [2022/08/05 20:52] – oemb1905 | computing:zfsreminders [2024/04/21 23:07] – oemb1905 | ||
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| + | ------------------------------------------- | ||
| + | * **zfsreminders** | ||
| + | * **Jonathan Haack** | ||
| + | * **Haack' | ||
| + | * **webmaster@haacksnetworking.org** | ||
| + | |||
| + | ------------------------------------------- | ||
| + | |||
| + | // | ||
| + | |||
| + | ------------------------------------------- | ||
| + | |||
| Create a pool on a single drive and specify a mountpoint for it. Note: use id, not uuid. | Create a pool on a single drive and specify a mountpoint for it. Note: use id, not uuid. | ||
| Line 34: | Line 46: | ||
| zfs load-key pool/ | zfs load-key pool/ | ||
| zfs mount pool/ | zfs mount pool/ | ||
| + | | ||
| + | If you need to delete a dataset, do the following: | ||
| + | |||
| + | zfs destroy -r pool/ | ||
| | | ||
| To create snapshots, here is a reasonable template: | To create snapshots, here is a reasonable template: | ||
| Line 44: | Line 60: | ||
| zfs list -H -o name -t snapshot | xargs -n1 zfs destroy | zfs list -H -o name -t snapshot | xargs -n1 zfs destroy | ||
| | | ||
| - | To add a zfs cache hard drive to your pool, do the following: | + | To add a zfs cache or slog hard drive to your pool, do the following: |
| zpool add pool cache / | zpool add pool cache / | ||
| + | zpool add pool log / | ||
| To view current snapshots, do the following: | To view current snapshots, do the following: | ||
| Line 57: | Line 74: | ||
| zfs list -ro space | zfs list -ro space | ||
| | | ||
| - | Next ... | + | To replace a failed drive, power down the host, remove drive, reboot, get '' |
| + | |||
| + | sudo zpool replace pool < | ||
| + | sudo zpool replace pool 3347762980558930904 / | ||
| + | |||
| + | To check the health, statistics, and basic specs of your pool: | ||
| + | |||
| + | zpool status -v | ||
| + | zpool iostat -v | ||
| + | zpool list -v | ||
| + | |||
| + | Also, to see whether cache volume is necessary, run and look at cache hit/miss ratio: | ||
| + | |||
| + | arc_summary | ||
| + | |||
| + | Change location of the keys for your encrypted datasets: | ||
| + | |||
| + | sudo zfs set keylocation=file:/// | ||
| + | |||
| + | Send and receive entire pool to new pool | ||
| + | |||
| + | zfs snapshot -r pool1@latestsnap | ||
| + | zfs send -R pool1@latestsnap | zfs receive -F pool2 | ||
| + | |||
| + | Arc information | ||
| + | |||
| + | arcstat | ||
| + | arc_summary -d | less | ||
| + | nano / | ||
| + | <# 8GB example - 8*(2^30) = below> | ||
| + | <# | ||
| + | <# Set Max ARC size => 2GB == 2147483648 Bytes> | ||
| + | <options zfs zfs_arc_max=2147483648> | ||
| + | <# Set Min ARC size => 1GB == 1073741824> | ||
| + | <options zfs zfs_arc_min=1073741824> | ||
| + | |||
| + | More examples | ||
| - | --- //[[jonathan@haacksnetworking.org|oemb1905]] | + | --- //[[webmaster@haacksnetworking.org|oemb1905]] |
computing/zfsreminders.txt · Last modified: 2024/05/11 16:48 by oemb1905
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