mount.nfs currently expects mount(2) to fail with EPROTONOSUPPORT if the kernel doesn't understand the requested NFS version. Unfortunately if the requested minor is not known to the kernel it returns -EINVAL. In kernels since 3.11 this can happen in nfs4_alloc_client(), if compiled without NFS_V4_2. More generally it can happen in in nfs_validate_text_mount_data() when nfs_parse_mount_options() returns 0 because nfs_parse_version_string() didn't recognise the version. EPROTONOSUPPORT is only returned if NFSv4 support is completely compiled out. So nfs_autonegotiate needs to check for EINVAL as well as EPROTONOSUPPORT. URL: https://bugzilla.opensuse.org/show_bug.cgi?id=959211 Reported-by: Takashi Iwai <tiwai@xxxxxxxx> Signed-off-by: NeilBrown <neilb@xxxxxxxx> --- utils/mount/stropts.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/utils/mount/stropts.c b/utils/mount/stropts.c index c8f5a6d223e7..86829a902bfd 100644 --- a/utils/mount/stropts.c +++ b/utils/mount/stropts.c @@ -841,6 +841,9 @@ check_result: case EPROTONOSUPPORT: /* A clear indication that the server or our * client does not support NFS version 4 and minor */ + case EINVAL: + /* A less clear indication that our client + * does not support NFSv4 minor version. */ if (mi->version.v_mode == V_GENERAL && mi->version.minor == 0) return result; -- 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
