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[GH-ISSUE #21] SLOG and L2ARC setup not described #21

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opened 2026-05-05 03:29:32 -06:00 by gitea-mirror · 5 comments
gitea-mirror commented 2026-05-05 03:29:32 -06:00
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Originally created by @severgun on GitHub (Jan 17, 2019).
Original GitHub issue: https://github.com/ewwhite/zfs-ha/issues/21

You describe hardware, but there is no description how to set them.

Once there's some idea of the SAS address layout of the drives, we can create a zpool.
...
The result:

BOOM!
cache spares logs
what? where? how?
Could it be added later? Should it be shared or hostbased?

Originally created by @severgun on GitHub (Jan 17, 2019). Original GitHub issue: https://github.com/ewwhite/zfs-ha/issues/21 You describe hardware, but there is no description how to set them. > Once there's some idea of the SAS address layout of the drives, we can create a zpool. > ... > The result: BOOM! cache spares logs what? where? how? Could it be added later? Should it be shared or hostbased?
gitea-mirror commented 2026-05-05 03:29:40 -06:00
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@ewwhite commented on GitHub (Jan 17, 2019):

Spares are just pool drives.

Cache can be shared (SAS) or independent (one per host).

Logs need to be shared SAS disks.

I can look into updating this...

<!-- gh-comment-id:455079576 --> @ewwhite commented on GitHub (Jan 17, 2019): Spares are just pool drives. Cache can be shared (SAS) or independent (one per host). Logs need to be shared SAS disks. I can look into updating this...
gitea-mirror commented 2026-05-05 03:29:43 -06:00
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@severgun commented on GitHub (Jan 17, 2019):

I understand this from other isssue here.
I mean there is no instructions how to set them up. Just result.
Also. What about using vdev_id.conf aliases? Is it acceptable?

<!-- gh-comment-id:455080326 --> @severgun commented on GitHub (Jan 17, 2019): I understand this from other isssue here. I mean there is no instructions how to set them up. Just result. Also. What about using vdev_id.conf aliases? Is it acceptable?
gitea-mirror commented 2026-05-05 03:29:45 -06:00
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@ewwhite commented on GitHub (Jan 17, 2019):

What do you need help with?

<!-- gh-comment-id:455083848 --> @ewwhite commented on GitHub (Jan 17, 2019): What do you need help with?
gitea-mirror commented 2026-05-05 03:29:48 -06:00
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@severgun commented on GitHub (Jan 17, 2019):

Is it acceptable to use /dev/disk/by-vdev/*** names to create HA pool and in pcs?
/dev/disk/by-vdev/*** names generated based on vdev_id.conf
https://github.com/zfsonlinux/zfs/wiki/FAQ#selecting-dev-names-when-creating-a-pool
As I understand conf should be same on both head nodes.

<!-- gh-comment-id:455109599 --> @severgun commented on GitHub (Jan 17, 2019): Is it acceptable to use /dev/disk/by-vdev/*** names to create HA pool and in pcs? /dev/disk/by-vdev/*** names generated based on vdev_id.conf https://github.com/zfsonlinux/zfs/wiki/FAQ#selecting-dev-names-when-creating-a-pool As I understand conf should be same on both head nodes.
gitea-mirror commented 2026-05-05 03:29:50 -06:00
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@ewwhite commented on GitHub (Apr 3, 2019):

I'd recommend /dev/mapper multipath devices for zpool creation.

<!-- gh-comment-id:479589844 --> @ewwhite commented on GitHub (Apr 3, 2019): I'd recommend /dev/mapper multipath devices for zpool creation.
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