So mount v4 returns 32 (probably means EPIPE) but v3 returns 0.
ubuntu@nfs:~$ sudo strace -e mount mount localhost:/home /mnt/nfs_home -o vers=4
mount.nfs: mount system call failed for /mnt/nfs_home
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1830, si_uid=0,
si_status=32, si_utime=0, si_stime=0} ---
+++ exited with 32 +++
ubuntu@nfs:~$ sudo strace -e mount mount localhost:/home /mnt/nfs_home -o vers=3
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1850, si_uid=0,
si_status=0, si_utime=0, si_stime=0} ---
+++ exited with 0 +++
Could I know the kernel version which use for below test? Seems it was tested
on 20240302.
https://autopkgtest.ubuntu.com/results/autopkgtest-noble/noble/s390x/n/nfs-utils/20240302_020943_bf464@/log.gz
And I tried with mainline/v6.8 kernel which has the same issue.
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https://bugs.launchpad.net/bugs/2060217
Title:
NFSv4 fails to mount in noble/s390x
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