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Bug #64479
openMemory leak detected when accessing a CephFS volume from Samba using libcephfs
Status:
Pending Backport
Priority:
Normal
Assignee:
Category:
Performance/Resource Usage
Target version:
% Done:
0%
Source:
Tags:
backport_processed
Backport:
quincy,reef,squid
Regression:
No
Severity:
3 - minor
Reviewed:
Affected Versions:
ceph-qa-suite:
Component(FS):
libcephfs
Labels (FS):
Pull request ID:
Crash signature (v1):
Crash signature (v2):
Description
When files are continuously created and deleted from a CephFS volume accessed through Samba with libcephfs (Samba's vfs_ceph module), a steady increase of used memory is observed. The growth is relatively slow but constant and eventually it triggers the OOM killer.
The test I used to reproduce it was:
- while true; do dd if=/dev/zero of=/mnt/samba/file bs=4k count=1 status=none; rm -f /mnt/samba/file; done
This can be run in parallel using different files to make the leak to happen faster.
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