-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Neil, On 18/06/2014 07:27, NeilBrown wrote: > On Sat, 14 Jun 2014 10:37:14 +0100 Alex Bligh <alex@xxxxxxxxxxx> > wrote: > >> I've discovered I think a peculiarity with handling mount paths >> with fsid=0. > > It looks to me like this has nothing to do with "fsid=0" and > everything to do with using the expected number of '/' characters. I don't *think* I saw the same issue without fsid=0, but I might be wrong. >> This is on Ubuntu Precise (old) but I've used 3.13 too with the >> same problem. >> >> I have an exports line like this: /storage/local >> *(rw,sync,wdelay,nohide,crossmnt,insecure,no_root_squash,no_all_squash,no_subtree_check,secure_locks,acl,fsid=0,anonuid=65534,anongid=65534) >> >> >> >> And mounted a directory like this (which succeeded) >> >> # mount -t nfs4 10.157.208.1:nfs-01 /mnt >> >> And unmount did this: >> >> # umount 10.157.208.1:nfs-01 /mnt was not found in /proc/mounts >> /mnt was not found in /proc/mounts >> >> Examination showed /proc/mounts contained the line: >> >> 10.157.208.1:/nfs-01 /mnt nfs4 >> rw,relatime,vers=4.0,rsize=262144,wsize=262144,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=10.157.208.1,local_lock=none,addr=10.157.208.1 >> 0 0 >> >> Whereas the outptut of 'mount' contained the line: >> >> 10.157.208.1:nfs-01 on /mnt type nfs4 >> (rw,addr=10.157.208.1,clientaddr=10.157.208.1) >> >> There is a difference here between "/nfs-01" and "nfs-01". >> >> This might merely be an annoying bug, where it not for the fact >> that as far as I can tell the mount is now cannot be unmounted >> with userspace tools. No amount of --fake and -n appears to help. >> System reset required. > > Doesn't umount /mnt work? No, umount /mnt gives the same error. > > >> >> Of course had I typed: >> >> # mount -t nfs4 10.157.208.1:/nfs-01 /mnt >> >> all would have been well. >> >> I suspect something should be canonicalising the path >> consistently. >> > > I agree there. > > NeilBrown > - -- Alex Bligh -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.22 (Darwin) Comment: GPGTools - https://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCgAGBQJTouWDAAoJEBPm5K7i9iORxgMQAJmkJj1vz2ghKOYxcFqpFh/d ZM0jncL40CB+50yLeGOBPlJshx2tvX0hKdMUQa0JWy0+IBi8QhuEtmU7lXB/Ifri CEoBVIV2dNRQgGcYUpRjszsSc+vEvWIfOZ/oLpq7JFI10LFGzmUZXS4cNdtNqnDv L4Yejlvj0O33zwolHFaVnaAg21Ybzg20TtVnWsQPgNcnQljPVD9lr1kmXDAqA1kx SfQ+2HccjaRFawf9Y5m+o29D/I0D0k23O4Zxjk/Bvv4xiQ2jXfCokWXeVLYbuzdm 7sEVEkncNnOaBAxWH54+F3YYzS6w9lXMP3MrE1NCPFGMvGvwBqfKC3gEE/ZTNMQ6 jvzZuQVVqSic9E8LHjlQ7x/SAhUXJkUojokRKnoje3m2MWjqY0tOJfZnQG3E15Zo jHVT16gHkNgsWNmny/cUtQTcg2l1GCDwAzY7HtdtVAHQrMd0jgx8wqFU5/7D9iuf IxakWABbJ3pa6p1g8NkaDELDcXZMMXWzucst763ke8BwDPnTzJFxgQnw0LcxaRPU FutJRpHh0y8JLda//aYB00qEiBRxk6CheqrQfiOAdHIBqghT451SreH2BY4FqT2v YXEwgrCj9WyCqFIJrkZEr5WvXYkAryi32E2daeU7qdMQbj0DCHsjFjw8OMRGCQjQ TqinXeStk19lDrNcnXEI =5HjR -----END PGP SIGNATURE----- -- 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
