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| -rw-r--r-- | doc/rados/configuration/pool-pg.conf | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/doc/rados/configuration/pool-pg.conf b/doc/rados/configuration/pool-pg.conf new file mode 100644 index 00000000000..6d2844592f5 --- /dev/null +++ b/doc/rados/configuration/pool-pg.conf @@ -0,0 +1,20 @@ +[osd] + + # By default, Ceph makes 2 replicas of objects. If you want to make three + # copies of an object the default value--a primary copy and two 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 = 1 # Allow writing one copy 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 = 3, we'd recommend approximately + # (100 * 10) / 3 = 333. + + osd pool default pg num = 333 + osd pool default pgp num = 333
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