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Bug #49489

Getting Long heartbeat and slow requests on ceph luminous 12.2.13

Added by ceph ceph about 2 months ago. Updated about 2 months ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
OSD
Target version:
% Done:

0%

Source:
other
Tags:
Long hearbeat, NVME cached SSD pool, osd flaps
Backport:
Regression:
No
Severity:
1 - critical
Reviewed:
Affected Versions:
ceph-qa-suite:
ceph-deploy
Pull request ID:
Crash signature (v1):
Crash signature (v2):

Description

1. Current environment is integrated with ceph and openstack
2. It has NVME and SSD disks only
3. We have create following pool - 1. NVME cached ssd where NVME acts are cache tier and SSD as main storage
2. Pure SSD pool
3. Pure NVME pool

4. Creating vms from pure ssd and nvme has no issues
5. Creating vms from NVME cached SSD showing long heartbeats on back and front network as well as slow requests
6. Pool are in write back mode
7. Then we are also seeing OSD flaps, mon down also

WhatsApp Image 2021-02-22 at 9.15.48 PM.jpeg View - actual screenshot from ceph (49.3 KB) ceph ceph, 02/25/2021 09:23 AM

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