Hi,
I have a question about tcp connection.
In the test environment, openstack uses ceph RBD as backend storage.
I created a VM and attache a volume/image to the VM.
I monitored how many fd was used by Qemu process.
I used the command dd to fill the whole volume/image.
I found that the FD count was increased, and stable at a fixed value after some time.
I think when reading/writing to volume/image, tcp connection needs to be established which needs FD, then the FD count may increase.
But after reading/writing, why the FD count doesn't descrease?
Thanks in advance.
BR.
Yafeng
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