Warning
Running WITH_CREATE_LUN might destroy data
Only run against a fresh Fedora 39 VM.
Run:
$ WITH_CREATE_LUN=true bash test.sh
…
#
#
rw,insecure
#
#
…
+ dd if=/dev/zero of=/var/tmp/pnfs-client/data bs=1G count=1
1+0 records in
1+0 records out
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 6.63653 s, 162 MB/s
…
+ grep -E 'layout|write'
nfs v4 client layoutcommit: 11239
nfs v4 client layoutget: 449
nfs v4 client layoutreturn: 8
nfs v4 client write: 24975
nfs v4 servop layoutcommit: 11238
nfs v4 servop layoutget: 444
nfs v4 servop layoutreturn: 55
nfs v4 servop write: 24975
…
#
#
pnfs,rw,insecure
#
#
…
+ dd if=/dev/zero of=/var/tmp/pnfs-client/data bs=1G count=1
1+0 records in
1+0 records out
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 4.41001 s, 243 MB/s
…
+ grep -E 'layout|write'
nfs v4 client layoutcommit: 11247
nfs v4 client layoutget: 451
nfs v4 client layoutreturn: 8
nfs v4 client write: 24975
nfs v4 servop layoutcommit: 11246
nfs v4 servop layoutget: 446
nfs v4 servop layoutreturn: 56
nfs v4 servop write: 24975
…
$
Monitor
watch --differences "nfsstat --server | egrep --after-context=1 read\|write\|layout"