Ceph

01/05/2022

12:39 AM Ceph Bug #53758: fsync so slow

dd if=/dev/urandom of=target_disk oflag=direct bs=4096 count=1000 status=progress
3944448 bytes (3.9 MB, 3.8 MiB) co... jichan lee

12:37 AM Ceph Bug #53758: fsync so slow

Fixed.
One OSD was abnormal. But it was not marked as SLOW_OPS, so it was difficult to check on the dashboard. jichan lee

01/04/2022

08:43 AM Ceph Bug #53758: fsync so slow

# rados bench -p k8s-default-class-c-blockpool 10 write -b 4M -t 16
hints = 1
Maintaining 16 concurrent writes of 4... jichan lee

08:05 AM Ceph Bug #53758 (Resolved): fsync so slow

Docker Image: quay.io/cephcsi/cephcsi:v3.2.2
ceph version 15.2.11 (e3523634d9c2227df9af89a4eac33d16738c49cb) octopus... jichan lee

11/23/2020

02:15 PM Ceph Bug #48326 (Closed): Could not access non-public-addr.

I am using rook-ceph in the Kubernetes cluster. So, Cluster IP is NATed as Pod IP.
Arguments for ceph-mon include:... jichan lee