Project

General

Profile

Actions

Bug #36703

closed

MDS admin socket command `dump cache` with a very large cache will hang/kill the MDS

Added by Venky Shankar over 5 years ago. Updated over 5 years ago.

Status:
Resolved
Priority:
High
Assignee:
Category:
-
Target version:
% Done:

0%

Source:
Community (dev)
Tags:
Backport:
luminous,mimic
Regression:
No
Severity:
2 - major
Reviewed:
Affected Versions:
ceph-qa-suite:
Component(FS):
MDS
Labels (FS):
Pull request ID:
Crash signature (v1):
Crash signature (v2):

Description

The MDS tries to dump the cache to a formatter which will not work well if the MDS cache is too large (probably starting around 1GB).

Till we fully fix the underlying issue, MDS can err back if the cache is too large to dump. Need to do tests with large cache sizes to determine the limit.


Related issues 2 (0 open2 closed)

Copied to CephFS - Backport #37608: luminous: MDS admin socket command `dump cache` with a very large cache will hang/kill the MDSResolvedVenky ShankarActions
Copied to CephFS - Backport #37609: mimic: MDS admin socket command `dump cache` with a very large cache will hang/kill the MDSResolvedVenky ShankarActions
Actions

Also available in: Atom PDF