[ceph-users] Re: Current min_alloc_size of OSD?
I think this would be valuable to have easily accessible during runtime, perhaps submit a report (and patch if possible)? David On Fri, Jan 13, 2023, at 08:14, Robert Sander wrote: > Hi, > > Am 13.01.23 um 14:35 schrieb Konstantin Shalygin: > > > ceph-kvstore-tool bluestore-kv /var/lib/ceph/osd/ceph-0/ get S > > min_alloc_size > > This only works when the OSD is not running. > > Regards > -- > Robert Sander > Heinlein Consulting GmbH > Schwedter Str. 8/9b, 10119 Berlin > > http://www.heinlein-support.de > > Tel: 030 / 405051-43 > Fax: 030 / 405051-19 > > Zwangsangaben lt. §35a GmbHG: > HRB 220009 B / Amtsgericht Berlin-Charlottenburg, > Geschäftsführer: Peer Heinlein -- Sitz: Berlin > ___ > ceph-users mailing list -- ceph-users@ceph.io > To unsubscribe send an email to ceph-users-le...@ceph.io > ___ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
[ceph-users] Re: Current min_alloc_size of OSD?
Hi, Am 13.01.23 um 14:35 schrieb Konstantin Shalygin: ceph-kvstore-tool bluestore-kv /var/lib/ceph/osd/ceph-0/ get S min_alloc_size This only works when the OSD is not running. Regards -- Robert Sander Heinlein Consulting GmbH Schwedter Str. 8/9b, 10119 Berlin http://www.heinlein-support.de Tel: 030 / 405051-43 Fax: 030 / 405051-19 Zwangsangaben lt. §35a GmbHG: HRB 220009 B / Amtsgericht Berlin-Charlottenburg, Geschäftsführer: Peer Heinlein -- Sitz: Berlin ___ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
[ceph-users] Re: Current min_alloc_size of OSD?
Hi, > On 12 Jan 2023, at 04:35, Robert Sander wrote: > > How can I get the current min_allloc_size of OSDs that were created with > older Ceph versions? Is there a command that shows this info from the on disk > format of a bluestore OSD? You can see this via kvstore-tool: ceph-kvstore-tool bluestore-kv /var/lib/ceph/osd/ceph-0/ get S min_alloc_size 4096: 00 10 00 00 00 00 00 00 || 0008 65536: 00 00 01 00 00 00 00 00 || 0008 Cheers, k ___ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
[ceph-users] Re: Current min_alloc_size of OSD?
Hi, On 12/01/2023 10.26, Robert Sander wrote: Is it this line? bluestore(/var/lib/ceph/osd/ceph-0) _open_super_meta min_alloc_size 0x1000 That seems to be it: https://github.com/ceph/ceph/blob/v15.2.17/src/os/bluestore/BlueStore.cc#L11754-L11755 A few lines later it should state the same, but with function name "_set_alloc_sizes": https://github.com/ceph/ceph/blob/v15.2.17/src/os/bluestore/BlueStore.cc#L5220-L5226, althoug "dout(10)" probably means it only outputs this in a higher debug level. Best regards, Gerdriaan Mulder ___ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
[ceph-users] Re: Current min_alloc_size of OSD?
On 11.01.23 23:47, Anthony D'Atri wrote: It’s printed in the OSD log at startup. But which info is it exactly? This line looks like reporting the block_size of the device: bdev(0x55b50a2e5800 /var/lib/ceph/osd/ceph-0/block) open size 107369988096 (0x18ffc0, 100 GiB) block_size 4096 (4 KiB) non-rotational discard supported Is it this line? bluefs _init_alloc shared, id 1, capacity 0x18ffc0, block size 0x1 0x1 equals 65536 aka 64K in decimal. Is it this line? bluestore(/var/lib/ceph/osd/ceph-0) _open_super_meta min_alloc_size 0x1000 Or this one? bluestore(/var/lib/ceph/osd/ceph-0) _init_alloc loaded 100 GiB in 1 extents, allocator type hybrid, capacity 0x18ffc0, block size 0x1000, free 0x18ffbfd000, fragmentation 0 I don’t immediately see it in `ceph osd metadata` ; arguably it should be there. An entry in ceph osd metadata would be great to have. `config show` on the admin socket I suspect does not show the existing value. This show the value currently set in the configuration. 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 ___ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
[ceph-users] Re: Current min_alloc_size of OSD?
It’s printed in the OSD log at startup. I don’t immediately see it in `ceph osd metadata` ; arguably it should be there. `config show` on the admin socket I suspect does not show the existing value. > > Hi, > > Ceph 16 Pacific introduced a new smaller default min_alloc_size of 4096 bytes > for HDD and SSD OSDs. > > How can I get the current min_allloc_size of OSDs that were created with > older Ceph versions? Is there a command that shows this info from the on disk > format of a bluestore OSD? > > Regards > -- > Robert Sander > Heinlein Support GmbH > Schwedter Str. 8/9b, 10119 Berlin > > https://www.heinlein-support.de > > Tel: 030 / 405051-43 > Fax: 030 / 405051-19 > > Amtsgericht Berlin-Charlottenburg - HRB 93818 B > Geschäftsführer: Peer Heinlein - Sitz: Berlin > ___ > ceph-users mailing list -- ceph-users@ceph.io > To unsubscribe send an email to ceph-users-le...@ceph.io ___ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
