| Description | We are facing server hang issue with CentOS7.7 server configured in kubernetes cluster with below error messages in system logs
Sep 24 05:38:39 fmk8lab02 kernel: XFS: runc:[1:CHILD](29133) possible memory allocation deadlock in kmem_zone_alloc (mode:0x8250)
Sep 24 05:38:41 fmk8lab02 kernel: XFS: runc:[1:CHILD](29133) possible memory allocation deadlock in kmem_zone_alloc (mode:0x8250)
Sep 24 05:38:43 fmk8lab02 kernel: XFS: runc:[1:CHILD](29133) possible memory allocation deadlock in kmem_zone_alloc (mode:0x8250)
I tried to drop caches, but it doesn't seem to help.
echo 1 > /proc/sys/vm/drop_caches
echo 2 > /proc/sys/vm/drop_caches
echo 3 > /proc/sys/vm/drop_caches
Doesn’t seems to be filesystem fragmentation issue as the frag factor is below 1% on the disk data is getting written, more looks like memory fragmentation issue.
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