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Diffstat (limited to 'doc/rados/configuration/pool-pg.conf')
| -rw-r--r-- | doc/rados/configuration/pool-pg.conf | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/doc/rados/configuration/pool-pg.conf b/doc/rados/configuration/pool-pg.conf new file mode 100644 index 000000000..34c3af9f0 --- /dev/null +++ b/doc/rados/configuration/pool-pg.conf @@ -0,0 +1,21 @@ +[global] + + # By default, Ceph makes 3 replicas of RADOS objects. If you want to maintain four + # copies of an object the default value--a primary copy and three replica + # copies--reset the default values as shown in 'osd_pool_default_size'. + # If you want to allow Ceph to write a lesser number of copies in a degraded + # state, set 'osd_pool_default_min_size' to a number less than the + # 'osd_pool_default_size' value. + + osd_pool_default_size = 3 # Write an object 3 times. + osd_pool_default_min_size = 2 # Allow writing two copies in a degraded state. + + # Ensure you have a realistic number of placement groups. We recommend + # approximately 100 per OSD. E.g., total number of OSDs multiplied by 100 + # divided by the number of replicas (i.e., osd pool default size). So for + # 10 OSDs and osd pool default size = 4, we'd recommend approximately + # (100 * 10) / 4 = 250. + # always use the nearest power of 2 + + osd_pool_default_pg_num = 256 + osd_pool_default_pgp_num = 256 |