Ok, I will show example: rados df pool name KB objects clones degraded unfound rd rd KB wr wr KB .log 558212 5 0 0 0 0 0 2844888 2844888 .pool 1 1 0 0 0 0 0 8 8 .rgw 0 6 0 0 0 0 0 1 0 .users 1 1 0 0 0 0 0 1 1 .users.email 1 1 0 0 0 0 0 1 1 .users.uid 2 2 0 0 0 1 0 2 2 data 0 0 0 0 0 0 0 0 0 metadata 0 0 0 0 0 0 0 0 0 rbd 0 0 0 0 0 0 0 0 0 sstest 32244226 2841055 0 653353 0 0 0 17066724 32370391 total used 324792996 2841071 total avail 31083452176 total space 33043244460
It means I have almost 3mln of objects in sstest. pg_pool 7 'sstest' pg_pool(rep pg_size 3 crush_ruleset 0 object_hash rjenkins pg_num 8 pgp_num 8 lpg_num 0 lpgp_num 0 last_change 21 owner 0) 3 copies in this pool. sstest used 32.244.226 KB + log 558.212 KB = 32.802.438 KB Total used is 324.792.996 KB and it's almost 10x more. 2011-07-27 12:57:35.541556 pg v54158: 6986 pgs: 8 active, 6978 active+clean; 32104 MB data, 310 GB used, 29642 GB / 31512 GB avail; I'am putting files beetwen 4-50KB on RADOS via s3 clilent, and radosgw. Can you explain that to me on this example from real life ?? 2011/7/27 Wido den Hollander <w...@widodh.nl>: > Hi, > > On Wed, 2011-07-27 at 12:19 +0200, Sławomir Skowron wrote: >> Thanks. >> >> 2011/7/27 Wido den Hollander <w...@widodh.nl>: >> > Hi, >> > >> > On Wed, 2011-07-27 at 07:58 +0200, Sławomir Skowron wrote: >> >> Hello. I have some questions. >> >> >> >> 1. Is there any chance to change default 4MB object size to for >> >> example 1MB or less ?? >> > >> > If you are using the filesystem, you can change the stripe-size per >> > directory with the "cephfs" tool. >> >> Unfortunately i only use rados layer in this case, and i even don't >> have any mds :) is there any chance to change this in rados layer ?? > > The RADOS gateway does NOT stripe over multiple objects. If you upload a > 1GB object through the RADOS gateway it will be a 1GB object. > > Only the RBD (Rados Block Device) and the Ceph filesystem do striping > over RADOS objects. > > RADOS itself doesn't stripe and the RADOS gateway is a almost 1:1 > mapping of pools and objects. > > Wido > >> >> >> >> >> 2. I have create cluster of two mons, and 32 osd (1TB each) on two >> >> machines. At this radosgw with apache2 for test. When i putting data >> >> from s3 client to rados, everything is ok, but when one of osd is >> >> going down all s3 clients going to be freeze for some seconds, before >> >> ceph sign this osd as down, and then everything is starting working >> >> again wit degraded osd. How can i tune this marking as a down for ms >> >> or 0 :) and not for seconds freeze ?? >> > >> > Normally a OSD should be down within about 10 seconds and shouldn't >> > affect all I/O operations. >> > >> > By default it takes 300 seconds before a OSD gets marked as "out", this >> > is handled by "mon osd down out interval" >> > >> > If you want to change the "down" reporting behaviour you could do this >> > with "osd min down reporters" and "osd min down reports". I'm not sure >> > you really want to do this, as the default values should be ok. >> >> Ok. I will check this. >> >> > Wido >> > >> >> >> >> My setup is debian 6.0, kernel 2.6.37.6 x86_64 and ceph version >> >> 0.31-10 from stable repo. >> >> >> >> Best regards >> >> >> >> Slawomir Skowron >> >> -- >> >> To unsubscribe from this list: send the line "unsubscribe ceph-devel" in >> >> the body of a message to majord...@vger.kernel.org >> >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> > >> > >> > >> > > > -- ----- Pozdrawiam Sławek "sZiBis" Skowron -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html