Actions
Bug #19189
closedcephfs kernel 4.9.13 file read hangs
Status:
Resolved
Priority:
Normal
Assignee:
-
Category:
-
Target version:
-
% Done:
0%
Source:
Tags:
Backport:
Regression:
No
Severity:
3 - minor
Reviewed:
Affected Versions:
ceph-qa-suite:
Crash signature (v1):
Crash signature (v2):
Description
using cephfs 10.2.5 on compute cluster with 4k cores and kernel 4.8.17 works like a charm. upgrading 3 nodes to 4.9.13 however results in hanging reads from cephfs after ~1h of activity.
One example:
dmesg:
[ 961.407146] libceph: get_reply osd174 tid 10093 data 20480 > preallocated 16384, skipping
f9nd104 ~ # cat /sys/kernel/debug/ceph/161863fa-917d-497c-aa88-ec2772c576ef.client2118648/osdc
REQUESTS 1 homeless 0
10093 osd174 3.5c062ee [174,91]/174 [174,91]/174 100071c1117.0000016b 0x400011 1 0'0 read
LINGER REQUESTS
this request hangs indefinitely.
the rest of the cephfs filesystem seems to work. also, trying to read the same file which is hanging on 4.9.13 node works without problems on any 4.8.17 node.
Actions