DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=9.04
DISTRIB_CODENAME=jaunty
DISTRIB_DESCRIPTION="Ubuntu 9.04"
Linux rambc 2.6.28-14-generic #47-Ubuntu SMP x86_64 GNU/Linux
Terminal server using Ubuntu Desktop install
I have found this bug to exist on a server that was upgraded from 7.04
directly to 9.04 (in steps). The problem was noticed after the upgrades
were finished (the system was barely used in between upgrades). System
is very customized as it is a terminal server. I have a LUN copy of the
original 7.04 machine running on a blade if comparison is needed.
The problem appears to possibly be DNS related, but is definitely a race
at boot. I use /etc/network/interfaces to hard code the static IP to
the network interface (NetworkManager not installed). The NFS mount
points were and still are in /etc/fstab, exactly has they have been (no
change in upgrade). The NFS mounts use the server name via DNS to
mount. The /proc/mounts does not show traces of "half mounted"
filesystems.
If I put the NFS server name in /etc/hosts, the filesystems will automatically
mount.
If I remove the NFS server name from /etc/hosts, the filesystems will not mount.
Adding "mount -a" in /etc/rc.local does not work.
Adding individual mount commands in /etc/rc.local does not work.
If I wait until the system is fully booted, "mount -a" will work.
Lines from /etc/fstab are pretty normal (all on one line, broken for ease of
sight):
nas-03:/u64dev-s
/home/shared nfs rw,rsize=8192,wsize=8192,hard,intr,timeo=14,bg
0 0
nas-03:/PSExport-ACCT
/home/shared/PSExport/ACCT nfs
rw,rsize=8192,wsize=8192,hard,intr,timeo=14,bg 0 0
nas-03:/PSExport-HR
/home/shared/PSExport/HR nfs
rw,rsize=8192,wsize=8192,hard,intr,timeo=14,bg 0 0
Line required in /etc/hosts contains an IP for "nas-03". This kludge is
highly not preferred.
Lines from /etc/network/interfaces (munged):
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 10.11.12.20
netmask 255.255.255.0
gateway 10.11.12.1
This bug will very soon be affecting us on another 17 servers, all being
upgraded from v6.06 and v7.04 to v9.04. Hard coding multiple DNS entries will
cause massive loss of hair and years off life. Not now, and possibly not for
me, but someone at some random point in the future.
--
nfs mounts specified in fstab is not mounted on boot.
https://bugs.launchpad.net/bugs/275451
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