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ceph ec: fix typos and reword some sections

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Signed-off-by: Aaron Lauterer <a.lauterer@proxmox.com>
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Aaron Lauterer 2022-06-27 15:16:30 +02:00 committed by Thomas Lamprecht
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commit 42135e5844
1 changed files with 6 additions and 7 deletions
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pveceph.adoc
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@ -556,7 +556,7 @@ to recover from a certain amount of data loss. Erasure coded pools can offer
more usable space compared to replicated pools, but they do that for the price more usable space compared to replicated pools, but they do that for the price
of performance. of performance.
For comparision: in classic, replicated pools, multiple replicas of the data For comparison: in classic, replicated pools, multiple replicas of the data
are stored (`size`) while in erasure coded pool, data is split into `k` data are stored (`size`) while in erasure coded pool, data is split into `k` data
chunks with additional `m` coding (checking) chunks. Those coding chunks can be chunks with additional `m` coding (checking) chunks. Those coding chunks can be
used to recreate data should data chunks be missing. used to recreate data should data chunks be missing.
@ -567,9 +567,9 @@ losing any data. The total amount of objects stored is `k + m`.
Creating EC Pools Creating EC Pools
^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^
You can create erasuce coded (EC) through using the `pveceph` CLI tooling. As Erasure coded (EC) pools can be created with the `pveceph` CLI tooling.
EC code work different than replicated pools, planning a setup and the pool Planning an EC pool needs to account for the fact, that they work differently
parameters used needs to adapt. than replicated pools.
The default `min_size` of an EC pool depends on the `m` parameter. If `m = 1`, The default `min_size` of an EC pool depends on the `m` parameter. If `m = 1`,
the `min_size` of the EC pool will be `k`. The `min_size` will be `k + 1` if the `min_size` of the EC pool will be `k`. The `min_size` will be `k + 1` if
@ -627,9 +627,8 @@ pveceph pool create <pool-name> --erasure-coding profile=<profile-name>
Adding EC Pools as Storage Adding EC Pools as Storage
^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^
You can also add an already existing EC pool as storage to {pve}, it works the You can add an already existing EC pool as storage to {pve}. It works the same
same as adding any `RBD` pool but requires to pass the extra `data-pool` way as adding an `RBD` pool but requires the extra `data-pool` option.
option.
[source,bash] [source,bash]
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