Hi,All.
DELL R720X8,96 OSDs, Network 2x10Gbit LACP.
When one of the nodes crashes, I get very slow I / O operations on virtual
machines.
A cluster map by default.
[ceph at ceph08 ~]$ ceph osd tree
# id weight type name up/down reweight
-1 262.1 root defaults
-2 32.76 host ceph01
0 2.73 osd.0 up 1
...........................
11 2.73 osd.11 up 1
-3 32.76 host ceph02
13 2.73 osd.13 up 1
..............................
12 2.73 osd.12 up 1
-4 32.76 host ceph03
24 2.73 osd.24 up 1
............................
35 2.73 osd.35 up 1
-5 32.76 host ceph04
37 2.73 osd.37 up 1
.............................
47 2.73 osd.47 up 1
-6 32.76 host ceph05
48 2.73 osd.48 up 1
...............................
59 2.73 osd.59 up 1
-7 32.76 host ceph06
60 2.73 osd.60 down 0
...............................
71 2.73 osd.71 down 0
-8 32.76 host ceph07
72 2.73 osd.72 up 1
................................
83 2.73 osd.83 up 1
-9 32.76 host ceph08
84 2.73 osd.84 up 1
................................
95 2.73 osd.95 up 1
If I change the cluster map on the following:
root---|
|
|-----rack1
| |
| host ceph01
| host ceph02
| host ceph03
| host ceph04
|
|-------rack2
|
host ceph05
host ceph06
host ceph07
host ceph08
What will povidenie cluster failover one node? And how much will it affect
the performance?
Thank you
--
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???.: +79229045757
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