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Bug #40527
openmerge_from: both pgs incomplete but incorrectly uses the source
Status:
Need More Info
Priority:
Normal
Assignee:
-
Category:
-
Target version:
-
% Done:
0%
Source:
Tags:
Backport:
Regression:
No
Severity:
3 - minor
Reviewed:
Affected Versions:
ceph-qa-suite:
Component(RADOS):
Pull request ID:
Crash signature (v1):
Crash signature (v2):
Description
this one has me scratching my head...
-1034> 2019-06-22T11:25:29.642+0000 7f7995a2c700 1 osd.2 258 advance_pg merging 2.4
-1033> 2019-06-22T11:25:29.642+0000 7f7995a2c700 10 osd.2 pg_epoch: 257 pg[2.4( empty local-lis/les=0/0 n=0 ec=21/21 lis/c 210/210 les/c/f 211/211/0 254/256/255) [1,0] r=-1 lpr=256 pi=[210,256)/1 crt=0'0 unknown NOTIFY mbc={}] merge_from from {2.14=0xdb91400} split_bits 4
-1031> 2019-06-22T11:25:29.642+0000 7f7995a2c700 10 osd.2 pg_epoch: 257 pg[2.4( empty local-lis/les=0/0 n=0 ec=21/21 lis/c 210/210 les/c/f 211/211/0 254/256/255) [1,0] r=-1 lpr=256 pi=[210,256)/1 crt=0'0 unknown NOTIFY mbc={}] merge_from target version doesn't match expected 248'102
-1030> 2019-06-22T11:25:29.642+0000 7f7995a2c700 10 trim proposed trim_to = 0'0
-1029> 2019-06-22T11:25:29.642+0000 7f7995a2c700 10 osd.2 pg_epoch: 257 pg[2.4( empty local-lis/les=0/0 n=0 ec=21/21 lis/c 210/210 les/c/f 211/211/0 254/256/255) [1,0] r=-1 lpr=256 pi=[210,256)/1 crt=0'0 unknown NOTIFY mbc={}] merge_from source 2 incomplete
-1028> 2019-06-22T11:25:29.642+0000 7f7995a2c700 10 osd.2 pg_epoch: 257 pg[2.4( empty local-lis/les=0/0 n=0 ec=21/21 lis/c 210/210 les/c/f 211/211/0 254/256/255) [1,0] r=-1 lpr=256 pi=[210,256)/1 crt=0'0 unknown NOTIFY mbc={}] merge_from source version doesn't match expected 248'102
-1027> 2019-06-22T11:25:29.642+0000 7f7995a2c700 10 trim proposed trim_to = 0'0
so far so good, but hte next line is
-1026> 2019-06-22T11:25:29.642+0000 7f7995a2c700 10 osd.2 pg_epoch: 257 pg[2.4( DNE empty lb MIN (NIBBLEWISE) local-lis/les=0/257 n=0 ec=0/0 lis/c 0/0 les/c/f 257/257/0 0/0/0) [1,0] r=-1 lpr=256 pi=[210,256)/1 crt=0'0 unknown NOTIFY mbc={}] merge_from set les/c to 257/257 from pool last_dec_*, source pg history was ec=0/0 lis/c 0/0 les/c/f 0/0/0 0/0/0
but that path of code is only taken if info.last_epoch_started == 0, and I can see nothing in merge_from that would clear it. :/
/a/sage-2019-06-21_16:36:51-rados:thrash-wip-sage2-testing-2019-06-20-2154-distro-basic-smithi/4057753
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