Re: ceph-users Digest, Vol 114, Issue 14
Hi Zitat, I'm confused - doesn't k4 m2 mean that you can loose any 2 out of the 6 osds? Cheers Dulux-Oz On 05/12/2023 20:02, ceph-users-request@ceph.io wrote:
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Today's Topics:
1. Re: EC Profiles & DR (David Rivera) 2. Re: EC Profiles & DR (duluxoz) 3. Re: EC Profiles & DR (Eugen Block)
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On 12/5/23 10:06, duluxoz wrote:
I'm confused - doesn't k4 m2 mean that you can loose any 2 out of the 6 osds?
Yes, but OSDs are not a good failure zone. The host is the smallest failure zone that is practicable and safe against data loss. Regards -- Robert Sander Heinlein Consulting GmbH Schwedter Str. 8/9b, 10119 Berlin https://www.heinlein-support.de Tel: 030 / 405051-43 Fax: 030 / 405051-19 Amtsgericht Berlin-Charlottenburg - HRB 220009 B Geschäftsführer: Peer Heinlein - Sitz: Berlin
sort of. It means you can lose 2 and have no data loss. But ceph will do it's best to protect you from dataloss by offlining the pool until the required number of chunks is up. See min_size here: https://docs.ceph.com/en/latest/rados/operations/pools/ ________________________________ From: Robert Sander <r.sander@heinlein-support.de> Sent: 05 December 2023 09:20 To: ceph-users@ceph.io <ceph-users@ceph.io> Subject: [ceph-users] Re: EC Profiles & DR CAUTION: This email originates from outside THG On 12/5/23 10:06, duluxoz wrote:
I'm confused - doesn't k4 m2 mean that you can loose any 2 out of the 6 osds?
Yes, but OSDs are not a good failure zone. The host is the smallest failure zone that is practicable and safe against data loss. Regards -- Robert Sander Heinlein Consulting GmbH Schwedter Str. 8/9b, 10119 Berlin https://www.heinlein-support.de<https://www.heinlein-support.de> Tel: 030 / 405051-43 Fax: 030 / 405051-19 Amtsgericht Berlin-Charlottenburg - HRB 220009 B Geschäftsführer: Peer Heinlein - Sitz: Berlin _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-leave@ceph.io
participants (3)
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Danny Webb
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duluxoz
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Robert Sander