> BTW, what kernel you are using ? And the exact version of
it ?
We use Centos7 and Rocky 8.5. Kernel versions are a mixture of:
4.18.0-348.20.1.el8_5.x86_64
3.10.0-1062.12.1.el7.x86_64
3.10.0-1127.19.1.el7.x86_64
3.10.0-1160.24.1.el7.x86_64
3.10.0-1160.31.1.el7.x86_64
3.10.0-1160.36.2.el7.x86_64
3.10.0-1160.62.1.el7.x86_64
3.10.0-957.5.1.el7.x86_64
3.10.0-957.12.1.el7.x86_64
3.10.0-957.27.2.el7.x86_64
3.10.0-957.5.1.el7.x86_64
Vlad
On 4/24/22 23:50, Xiubo Li wrote:
On 4/25/22 5:25 AM, Vladimir Brik wrote:
Hello
We are experiencing an issue where, sometimes, when users
write to cephfs an empty file is created and then the
application hangs, seemingly indefinitely. I am sometimes
able to reproduce with dd.
Does anybody know what might be going on?
Some details:
- ceph health complains about 100+ slow metadata IOs
- CPU utilization of ceph-mds is low
- We have almost 200 kernel cephfs clients
BTW, what kernel you are using ? And the exact version of it ?
Thanks
- Cephfs metadata is stored on 3 OSDs that use NVMe flash
AICs
Vlad
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