so as not to duplicate effort, I see there is a request for enhancement
over at Redhat: https://bugzilla.redhat.com/show_bug.cgi?id=1801326
** Bug watch added: Red Hat Bugzilla #1801326
https://bugzilla.redhat.com/show_bug.cgi?id=1801326
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OK, to set a random nfs4_unique_id you can just cat/echo a string like
this:
cat /proc/sys/kernel/random/uuid |tr -d '\n' >
/sys/module/nfs/parameters/nfs4_unique_id
so long as you do this before your first NFS mount, which in my case is
not a problem.
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I have found the root cause, in my test environment the clients are all
clones with unique machine-id but the same hostname. The issue is
resolve by either changing the hostname of each client, or by setting a
unique value here:
echo options nfs nfs4_unique_id=[string] >
/etc/modprobe.d/nfsclient.
apport information
** Tags added: apport-collected focal uec-images
** Description changed:
I am seeing an issue with NFSv4 performance on Ubuntu 20.04.3 LTS on both
clients and server (tested kernels 5.4 to 5.16), where the server is connected
by 10Gbit Ethernet and with multiple clients co
apport-collect 1960826 just writings out "." endlessly. The
documentation says that apport-bug collects the same info so I have
manually created a file locally which I have attached here. HTH, if
something else is required please let me know.
** Attachment added: "1960826.apport"
https://b
** Package changed: ubuntu => linux (Ubuntu)
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https://bugs.launchpad.net/bugs/1960826
Title:
NFSv4 performance problem with newer kernels
Status in linux package in Ubuntu
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