Re: kernel client osdc ops stuck and mds slow reqs

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On 20/02/2023 22:28, Kuhring, Mathias wrote:
Hey Dan, hey Ilya

I know this issue is two years old already, but we are having similar
issues.

Do you know, if the fixes got ever backported to RHEL kernels?

It's already backported to RHEL 8 long time ago since kernel-4.18.0-154.el8.

Not looking for el7 but rather el8 fixes.
Wondering if the patches were backported and we shouldn't actually see
these issues.
Or if you could maybe resolve them with a kernel upgrade.

Most active clients are currently on kernel versions such as:
4.18.0-348.el8.0.2.x86_64, 4.18.0-348.2.1.el8_5.x86_64,
4.18.0-348.7.1.el8_5.x86_64

While the cluster runs with kernel 3.10.0-1160.42.2.el7.x86_64 and
cephadm with
ceph version 17.2.1 (ec95624474b1871a821a912b8c3af68f8f8e7aa1) quincy
(stable).

It seems not backported to el7 yet.

Thanks,

Not sure, if the cluster kernel is actually relevant here for OSD <>
kernel client connection.

Thanks you for your help.

Best, Mathias

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