[SOLVED] change num-replicas on ceph rool online?

[blowfish]

hi to all
can I change num-replicas on pool online? I need to change it from 2 to 3 and
min_size from 1 to 2
can i do it on the fly? and if yes, than how? from gui (how?), or from console by command

ceph osd pool set data size 3
ceph osd pool set data min_size 2

thanks!

 

[ivix]

Hi,
on any ceph node you run command:

ceph osd pool set POOL_NAME size3

get message:

set pool 90 size to 3

and then:

ceph osd pool set POOL_NAME min_size 2

get message:

set pool 90 min_size to 2

Now ceph do recover objects - create new copies.

2016-02-04 12:30:14.321049 mon.0 172.16.172.1:6789/0 16026809 : cluster [INF] pgmap v51235464: 1024 pgs: 750 active+clean, 269 active+degraded, 5 active+recovering+degraded; 3218 GB data, 9663 GB used, 18192 GB / 27856 GB avail; 26543 kB/s rd, 1295 kB/s wr, 170 op/s; 1686/2474064 objects degraded (0.068%); 196 MB/s, 49 objects/s recovering
2016-02-04 12:30:18.315133 mon.0 172.16.172.1:6789/0 16026811 : cluster [INF] pgmap v51235466: 1024 pgs: 776 active+clean, 245 active+degraded, 3 active+recovering+degraded; 3218 GB data, 9664 GB used, 18191 GB / 27856 GB avail; 14416 kB/s rd, 171 kB/s wr, 54 op/s; 1540/2474064 objects degraded (0.062%); 146 MB/s, 36 objects/s recovering
2016-02-04 12:30:19.319843 mon.0 172.16.172.1:6789/0 16026812 : cluster [INF] pgmap v51235467: 1024 pgs: 776 active+clean, 244 active+degraded, 4 active+recovering+degraded; 3218 GB data, 9664 GB used, 18191 GB / 27856 GB avail; 18355 kB/s rd, 302 kB/s wr, 93 op/s; 1534/2474064 objects degraded (0.062%); 206 MB/s, 51 objects/s recovering

Anything is online and safe.

 

[blowfish]

thank you very much!

 

[jsterr]

Should I edit ceph.conf after changing replica size via cli? Because it still says replica 3 after doing
ceph osd pool set POOL_NAME size 4.