Turning on "compression_algorithm" old pool with 500TB usage
Hello. I have a erasure pool and I didn't turn on compression at the beginning. Now I'm writing new type of very small data and overhead is becoming an issue. I'm thinking to turn on compression on the pool but in most filesystems it will effect only the new data. What is the behavior in ceph?
The same. You need to rewrite all your data k Sent from my iPhone
On 4 Jun 2021, at 15:08, mhnx <morphinwithyou@gmail.com> wrote:
Hello. I have a erasure pool and I didn't turn on compression at the beginning. Now I'm writing new type of very small data and overhead is becoming an issue. I'm thinking to turn on compression on the pool but in most filesystems it will effect only the new data. What is the behavior in ceph?
On Mon, Jun 07, 2021 at 06:22:07AM +0300, Konstantin Shalygin <k0ste@k0ste.ru> wrote:
The same. You need to rewrite all your data
You can do that without user interaction too, if you recreate all affected OSDs. That way the data on the OSD is recreated and thus compressed because it is "new". Florian
participants (3)
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Florian Pritz
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Konstantin Shalygin
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mhnx