When mounting nfs with -overs=4,minorversion=2, want getting nfs mounts with vers=4.2, but got vers=4.0 as, # mount -t nfs -onfsvers=4,minorversion=2 127.0.0.1:/ /mnt/ # cat /proc/mounts | grep vers 127.0.0.1:/ /mnt nfs4 rw,relatime,vers=4.0,rsize=262144,wsize=262144,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,clientaddr=127.0.0.1,local_lock=none,addr=127.0.0.1 0 0 It's caused by mount.nfs writing bad vers to kernel. This patch lets mount.nfs writing signal number to kernel as command line. Note: This patch is based on my last patch, "mount: make sure mounting nfs with v4,vers=4 and nfsvers=4" Signed-off-by: Kinglong Mee <kinglongmee@xxxxxxxxx> --- utils/mount/stropts.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/utils/mount/stropts.c b/utils/mount/stropts.c index 2ae532e..c8f5a6d 100644 --- a/utils/mount/stropts.c +++ b/utils/mount/stropts.c @@ -737,8 +737,13 @@ static int nfs_do_mount_v4(struct nfsmount_info *mi, } if (mi->version.v_mode != V_SPECIFIC) { - snprintf(version_opt, sizeof(version_opt) - 1, - "vers=%lu.%lu", mi->version.major, mi->version.minor); + if (mi->version.v_mode == V_GENERAL) + snprintf(version_opt, sizeof(version_opt) - 1, + "vers=%lu", mi->version.major); + else + snprintf(version_opt, sizeof(version_opt) - 1, + "vers=%lu.%lu", mi->version.major, + mi->version.minor); if (po_append(options, version_opt) == PO_FAILED) { errno = EINVAL; -- 2.3.5 -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html