Hi, All
When I type 'ceph health' to get the status of cluster, it will show
some information.
Would you please to explain the term?
Ex: HEALTH_WARN 3/54 degraded (5.556%)
What does "degraded" mean ? Is it a serious error and how to
fix it ?
Ex: HEALTH_WARN 264 pgs degraded, 6/60 degraded (10.000%); 3/27
unfound (11.111%)
What does "unfound" mean? Could we recover the data?
Would it cause the whole data in rbd image corrupted and never
access ?
When I type 'ceph pg dump', it would show like this. Would you
please explain what is "hb in" and "hb out" ?
osdstat kbused kbavail kb hb in
hb out
0 17300872 1884175720 1906311168
[6,7,8,9,10,11] [6,7,8,9,10,11]
1 16661664 1884808728 1906311168
[6,7,8,9,10,11] [6,7,8,9,10,11]
2 15695664 1886027584 1906311168
[6,7,8,9,10,11] [6,7,8,9,10,11]
3 16463440 1885005328 1906311168
[6,7,8,9,10,11] [6,7,8,9,10,11]
4 14101016 1888130760 1906311168
[6,7,8,9,10,11] [6,7,8,9,10,11]
5 14015804 1888215124 1906311168
[6,7,8,9,10,11] [6,7,8,9,10,11]
6 19312280 1881660776 1906311168
[0,1,2,3,4,5] [0,1,2,3,4,5]
7 14451992 1887521200 1906311168
[0,1,2,3,4,5] [0,1,2,3,4,5]
8 16336028 1885393468 1906311168
[0,1,2,3,4,5] [0,1,2,3,4,5]
9 16697868 1884773940 1906311168
[0,1,2,3,4,5] [0,1,2,3,4,5]
10 13530456 1888695776 1906311168
[0,1,2,3,4,5] [0,1,2,3,4,5]
11 13921908 1888307364 1906311168
[0,1,2,3,4,5] [0,1,2,3,4,5]
sum 188488992 22632715768 22875734016
And from the latest document, I know we can do the cluster snapshot by
" ceph osd cluster_snap <name>"
Is that means we can rollback the data from the snapshot? Do you have
any related document to show how to operate it?
Thanks a lot!
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