Pranith Kumar Karampuri

[Tracking][pranithk] - Performance issues - 2022

2

- [ ] https://github.com/gluster/glusterfs/issues/1591 - [ ] https://github.com/gluster/glusterfs/issues/2463 - [ ] https://github.com/gluster/glusterfs/issues/3107 - [ ] https://github.com/gluster/glusterfs/issues/3108

graph switch in glusterfs does fsync which leads to I/O freeze on the mount for extended periods

3

 On graph switch for each fd an fsync is called serially leading to high latency on the mounts during this process. This was done to make...

glusterd: Enable cluster.use-anonymous-inode for op-version >= 9

6

Problem: On upgrade even though the op-version of gluster is less than 9 cluster.use-anonymous-inode option is enabled leading to unnecessary processing by self-heal-daemon Fix: Enable this option based on op-version...

glusterfs client may crash/hang when the same file is written using different fds simultaneously when a race is hit

6

Gluster client crashed with Thread-1 ``` #0 0x00007fa9a54ec84c in __pthread_kill_implementation () from /lib64/libc.so.6 #1 0x00007fa9a549f6a6 in raise () from /lib64/libc.so.6 #2 0x00007fa9a54897d3 in abort () from /lib64/libc.so.6 #3 0x00007fa9a54896fb in...

dht: hash-mod vs hash-jump-consistent results

20

Just want to share results of some experiments I did: I added the attached patch and this is what I observed for the amount of data that is migrated with...

concurrent creates when min-free-disk is exceeded can lead to gfid mismatches between linkto and data files

6

We faced an issue in production where 28 files were in this condition where the linkto file and data files had gfid mismatch. Upon code reading we were able to...

Glusterfs regression run results on Fedora 41

14

- tests/basic/afr ``` Test Summary Report ------------------- tests/basic/afr/arbiter-statfs.t (Wstat: 256 (exited 1) Tests: 10 Failed: 1) Failed test: 10 Non-zero exit status: 1 Parse errors: Bad plan. You planned 22...

Don't fire the callback when cleanup is in progress

2

Fixes: #4525 Change-Id: I8264d21fb285a870adead71015f1fc87a4b375ab

tests/features/mandatory-lock-forced.t failures

1

``` root@glusterfs-fedora-41:/home/pk/glusterfs# prove -rfv tests/features/mandatory-lock-forced.t tests/features/mandatory-lock-forced.t .. egrep: warning: egrep is obsolescent; using grep -E egrep: warning: egrep is obsolescent; using grep -E 1..30 ok 1 [ 128/ 1017] <...

Fix use after free bug in fuse release/releasedir

2

Problem: fuse_fd_ctx_destroy() is being called in fuse_release()/fuse_releasedir() even before all the refs on the fd are released. This can lead to race situations where the fd_ctx is accessed after freeing....