Bug#717547: nfs-common: simple remount returns an error
Package: nfs-common
Version: 1:1.2.6-4
Severity: normal
Dear Maintainer,
I met a strange behavour of mount.nfs.
When I run "mount -o remount /nfs/mntpnt", it terminated silently but
the exit status was 32. Actually when I add "-v" option, it prints
"mount.nfs: mount(2): Invalid argument".
Here is what I did.
$ mkdir /tmp/4751.exp /tmp/4751.mnt
$ sudo exportfs -i -o rw,async,no_subtree_check,no_root_squash localhost:/tmp/4751.exp
$ sudo exportfs -f
$ sudo mount -t nfs -o intr,nfsvers=3 localhost:/tmp/4751.exp /tmp/4751.mnt
$ sudo mount -o remount /tmp/4751.mnt
(silently terminates)
$ sudo mount -v -o remount /tmp/4751.mnt
mount.nfs: mount(2): Invalid argument
I expect such simple remount causes VFS to flush the caches on that
filesystem. Actually older Debian (at least v5 lenny) surely
worked. Upgrading to v7 (wheezy), then mount.nfs retuns an error.
-- Package-specific info:
-- rpcinfo --
program vers proto port
100000 4 tcp 111 portmapper
100000 3 tcp 111 portmapper
100000 2 tcp 111 portmapper
100000 4 udp 111 portmapper
100000 3 udp 111 portmapper
100000 2 udp 111 portmapper
100024 1 udp 42522 status
100024 1 tcp 34284 status
100021 1 udp 39173 nlockmgr
100021 3 udp 39173 nlockmgr
100021 4 udp 39173 nlockmgr
100021 1 tcp 60767 nlockmgr
100021 3 tcp 60767 nlockmgr
100021 4 tcp 60767 nlockmgr
100003 2 tcp 2049 nfs
100003 3 tcp 2049 nfs
100003 4 tcp 2049 nfs
100227 2 tcp 2049
100227 3 tcp 2049
100003 2 udp 2049 nfs
100003 3 udp 2049 nfs
100003 4 udp 2049 nfs
100227 2 udp 2049
100227 3 udp 2049
100005 1 udp 51129 mountd
100005 1 tcp 58113 mountd
100005 2 udp 51458 mountd
100005 2 tcp 34458 mountd
100005 3 udp 47395 mountd
100005 3 tcp 55559 mountd
-- /etc/default/nfs-common --
NEED_STATD=
STATDOPTS=
NEED_IDMAPD=
NEED_GSSD=
-- /etc/idmapd.conf --
[General]
Verbosity = 0
Pipefs-Directory = /var/lib/nfs/rpc_pipefs
[Mapping]
Nobody-User = nobody
Nobody-Group = nogroup
-- /etc/fstab --
jrosysadm:/sysadm /sysadm nfs ro,soft,intr,bg,proto=udp 0 3
jroproj:/proj /proj nfs ro,soft,intr,bg,proto=udp 0 3
jroproj:/proj/aufs /proj/aufs nfs ro,soft,intr,bg,proto=udp 0 3
jroproj:/proj/open-e /proj/open-e nfs ro,soft,intr,bg,proto=udp 0 3
jrosrc:/src /src nfs ro,soft,intr,bg,proto=udp 0 3
jrosrc:/src/linux-2.6 /src/linux-2.6 nfs ro,soft,intr,bg,proto=udp 0 3
-- /proc/mounts --
rpc_pipefs /var/lib/nfs/rpc_pipefs rpc_pipefs rw,relatime 0 0
jrosysadm:/sysadm /sysadm nfs ro,relatime,vers=3,rsize=32768,wsize=32768,namlen=255,soft,proto=udp,timeo=11,retrans=3,sec=sys,mountaddr=192.168.1.4,mountvers=3,mountport=46065,mountproto=udp,local_lock=none,addr=192.168.1.4 0 0
jroproj:/proj /proj nfs ro,relatime,vers=3,rsize=32768,wsize=32768,namlen=255,soft,proto=udp,timeo=11,retrans=3,sec=sys,mountaddr=192.168.1.6,mountvers=3,mountport=46065,mountproto=udp,local_lock=none,addr=192.168.1.6 0 0
jroproj:/proj/aufs /proj/aufs nfs ro,relatime,vers=3,rsize=32768,wsize=32768,namlen=255,soft,proto=udp,timeo=11,retrans=3,sec=sys,mountaddr=192.168.1.6,mountvers=3,mountport=46065,mountproto=udp,local_lock=none,addr=192.168.1.6 0 0
jroproj:/proj/open-e /proj/open-e nfs ro,relatime,vers=3,rsize=32768,wsize=32768,namlen=255,soft,proto=udp,timeo=11,retrans=3,sec=sys,mountaddr=192.168.1.6,mountvers=3,mountport=46065,mountproto=udp,local_lock=none,addr=192.168.1.6 0 0
jrosrc:/src /src nfs ro,relatime,vers=3,rsize=32768,wsize=32768,namlen=255,soft,proto=udp,timeo=11,retrans=3,sec=sys,mountaddr=192.168.1.7,mountvers=3,mountport=46065,mountproto=udp,local_lock=none,addr=192.168.1.7 0 0
jrosrc:/src/linux-2.6 /src/linux nfs ro,relatime,vers=3,rsize=32768,wsize=32768,namlen=255,soft,proto=udp,timeo=11,retrans=3,sec=sys,mountaddr=192.168.1.7,mountvers=3,mountport=46065,mountproto=udp,local_lock=none,addr=192.168.1.7 0 0
nfsd /proc/fs/nfsd nfsd rw,relatime 0 0
localhost:/tmp/4751.exp /tmp/4751.mnt nfs rw,relatime,vers=3,rsize=262144,wsize=262144,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=127.0.0.1,mountvers=3,mountport=47395,mountproto=udp,local_lock=none,addr=127.0.0.1 0 0
-- System Information:
Debian Release: 7.1
APT prefers stable
APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 3.2.0-4-amd64 (SMP w/2 CPU cores)
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/dash
Versions of packages nfs-common depends on:
ii adduser 3.113+nmu3
ii initscripts 2.88dsf-41
ii libc6 2.13-38
ii libcap2 1:2.22-1.2
ii libcomerr2 1.42.5-1.1
ii libdevmapper1.02.1 2:1.02.74-7
ii libevent-2.0-5 2.0.19-stable-3
ii libgssglue1 0.4-2
ii libk5crypto3 1.10.1+dfsg-5+deb7u1
ii libkeyutils1 1.5.5-3
ii libkrb5-3 1.10.1+dfsg-5+deb7u1
ii libmount1 2.20.1-5.3
ii libnfsidmap2 0.25-4
ii libtirpc1 0.2.2-5
ii libwrap0 7.6.q-24
ii lsb-base 4.1+Debian8+deb7u1
ii rpcbind 0.2.0-8
ii ucf 3.0025+nmu3
Versions of packages nfs-common recommends:
ii python 2.7.3-4
Versions of packages nfs-common suggests:
pn open-iscsi <none>
pn watchdog <none>
Versions of packages nfs-kernel-server depends on:
ii libblkid1 2.20.1-5.3
ii libc6 2.13-38
ii libtirpc1 0.2.2-5
ii libwrap0 7.6.q-24
ii lsb-base 4.1+Debian8+deb7u1
ii ucf 3.0025+nmu3
-- no debconf information
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