Fix #41782
mds: allow stray directories to fragment and switch from 10 stray directories to 1
0%
Description
Stray directories can become too full which can result in unexpected ENOSPC errors. See for example, #41778.
Evaluate whether it's feasible to allow fragmentation on strays. It is probably a conservative barrier erected for when fragmentation wasn't considered stable (pre-luminous). The use of 10 stray directories was a workaround. Using only 1 with fragmentation is much simpler.
Related issues
History
#1 Updated by Patrick Donnelly 5 months ago
- Related to Bug #41778: 'No space left on device' due to snapshots added
#2 Updated by Patrick Donnelly 4 months ago
- Assignee set to Milind Changire
#3 Updated by Milind Changire 4 months ago
- File out.tar.bz added
please see attachment out.tar.bz which includes ceph.conf as to why `ceph status` command hangs on Fedora 30 laptop.
#4 Updated by Patrick Donnelly 4 months ago
Milind Changire wrote:
please see attachment out.tar.bz which includes ceph.conf as to why `ceph status` command hangs on Fedora 30 laptop.
perhaps it's because you aren't running "bin/ceph status"? Is ceph also installed on your system using Fedora packages?
#5 Updated by Milind Changire 3 months ago
Patrick Donnelly wrote:
Milind Changire wrote:
please see attachment out.tar.bz which includes ceph.conf as to why `ceph status` command hangs on Fedora 30 laptop.
perhaps it's because you aren't running "bin/ceph status"? Is ceph also installed on your system using Fedora packages?
this wasn't the case
I had a /etc/ceph/ceph.conf along with build/ceph.conf
Zheng pointed this case to me and it indeed being the case, my vstart cluster started working normally after I removed /etc/ceph/ceph.conf
#6 Updated by Milind Changire 2 months ago
- Status changed from New to Fix Under Review
- Pull request ID set to 31521
Update:
Stray dirs are not being dropped from 10 to 1. Zheng recommended having more stray dirs.
Only fragmentation on stray dirs is being enabled with this PR.
#7 Updated by Patrick Donnelly 23 days ago
- Target version changed from v15.0.0 to v16.0.0
We'll look at merging this at the beginning of Pacific release cycle.