Add support for CRUSH tiers on pool creation #150

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joshuaboniface · 2021-12-28T03:42:32-05:00

joshuaboniface commented

2021-12-28 03:42:32 -05:00

Allow specifying a device tier (hdd, ssd, nvme) when creating Ceph storage pools.

This would need to be two-parted:

Create a crush rule with the relevant map, e.g.

ceph osd crush rule create-replicated hdd_rule default host hdd
ceph osd crush rule create-replicated ssd_rule default host ssd
ceph osd crush rule create-replicated nvme_rule default host nvme

This bit must be done at pool creation time, because the device classes must already exist (i.e. OSDs of the relevant types must have already been added).

Set the pool to use the relevant CRUSH rule, e.g.

ceph osd pool create slow 128 128 hdd_rule
ceph osd pool create fast 128 128 ssd_rule
ceph osd pool create blazing 128 128 nvme_rule

This would allow support for multi-tiered storage on nodes.

A default would always be present, and relevant flags/arguments for adding pools would need to be added along with a display in the pool output.

Allow specifying a device tier (`hdd`, `ssd`, `nvme`) when creating Ceph storage pools. This would need to be two-parted: 1. Create a crush rule with the relevant map, e.g. ``` ceph osd crush rule create-replicated hdd_rule default host hdd ceph osd crush rule create-replicated ssd_rule default host ssd ceph osd crush rule create-replicated nvme_rule default host nvme ``` This bit must be done at *pool* creation time, because the device classes must already exist (i.e. OSDs of the relevant types must have already been added). 2. Set the pool to use the relevant CRUSH rule, e.g. ``` ceph osd pool create slow 128 128 hdd_rule ceph osd pool create fast 128 128 ssd_rule ceph osd pool create blazing 128 128 nvme_rule ``` This would allow support for multi-tiered storage on nodes. A default would always be present, and relevant flags/arguments for adding pools would need to be added along with a display in the pool output.

joshuaboniface added the

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labels 2021-12-28 03:42:32 -05:00

joshuaboniface self-assigned this 2021-12-28 03:42:32 -05:00

joshuaboniface commented

2021-12-28 21:50:14 -05:00

Implemented in 0.9.47.

joshuaboniface closed this issue

2021-12-28 21:50:14 -05:00

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