> On Fri, Apr 23, 2021 at 07:04:41PM +0200, Petr Vorel wrote: > > Hi Bruce, > > > On Fri, Apr 23, 2021 at 04:17:52AM +0200, Petr Vorel wrote: > > > > Hi, > > > > > On Thu, Apr 22, 2021 at 09:18:03PM +0200, Petr Vorel wrote: > > > > > > LTP NFS tests (which use netns) fails on tmpfs since d4066486: > > > > > > mount -t nfs -o proto=tcp,vers=4.2 10.0.0.2:/tmp/ltp.nfs01.nfs-4.2/LTP_nfs01.UF6gRZCy3O/4.2/tcp /tmp/ltp.nfs01.nfs-4.2/LTP_nfs01.UF6gRZCy3O/4.2/0 > > > > > > mount.nfs: mounting 10.0.0.2:/tmp/ltp.nfs01.nfs-4.2/LTP_nfs01.UF6gRZCy3O/4.2/tcp failed, reason given by server: No such file or directory > > > > > We should figure out the reason for the failure. A network trace might > > > > > help. > > > > Anything specific you're looking for? > > > Actually I was thinking of capturing the network traffic, something > > > like: > > > tcpdump -s0 -wtmp.pcap -i<interface> > > > then try the mount, then kill tcpdump and look at tmp.pcap. > > I don't see anything suspicious, can you please have a look? > > https://gitlab.com/pevik/tmp/-/raw/master/nfs.v3.pcap > > https://gitlab.com/pevik/tmp/-/raw/master/nfs.v4.pcap > > https://gitlab.com/pevik/tmp/-/raw/master/nfs.v4.1.pcap > > https://gitlab.com/pevik/tmp/-/raw/master/nfs.v4.2.pcap > It might be the "hide" option, that's odd: > > exportfs -v > > /tmp/LTP_nfs01.xkKpqpRikV/4.2/tcp > > <world>(sync,wdelay,hide,no_subtree_check,fsid=7239,sec=sys,rw,secure,no_root_squash,no_all_squash) NOTE: hide is also in v3, which is working. I can provide you even setup. I thought it's related to mount.nfs change (I tested it on openSUSE and Debian, with various kernel versions), but the real cause might be in kernel or elsewhere. Kind regards, Petr > --b.
