| wizumwalt |
01-11-2009 01:11 AM |
diskless node mounts / as read-only
I've got a machine that boots via nfs and / is being mounted as readonly. The other partitions listed in the fstab aren't mounting at all.
I found the following in 'dmesg' output.
Code:
Root-NFS: unknown option: rw
...
VFS: Mounted root (nfs filesystem) readonly.
Freeing unused kernel memory: 436k freed.
Here's it's fstab.
Code:
10.0.0.10:/diskless/10.0.1.1 / nfs sec=sys,sync,hard,intr,rw,nolock,rsize=8192,wsize=8192,nfsvers=3 0 0
10.0.0.10:/opt /opt nfs sync,hard,intr,rw,nolock,rsize=8192,wsize=8192 0 0
10.0.0.10:/usr /usr nfs sec=sys,sync,hard,intr,ro,nolock,rsize=8192,wsize=8192,nfsvers=3 0 0
10.0.0.10:/home /home nfs sync,hard,intr,rw,nolock,rsize=8192,wsize=8192 0 0
10.0.0.10:/var/log /var/log nfs sync,hard,intr,rw 0 0
I am curious why / in the fstab above shows nfsvers=3, yet /proc/mounts below shows /dev/root as vers=2 ... is that right?
And here's /proc/mounts.
Code:
$ cat /proc/mounts
rootfs / rootfs rw 0 0
/dev/root / nfs ro,vers=2,rsize=4096,wsize=4096,namlen=255,hard,nointr,nolock,proto=udp,timeo=11,retrans=2,sec=sys,mountproto=udp,addr=10.0.0.10 0 0
proc /proc proc rw,nosuid,nodev,noexec 0 0
sysfs / sys sysfs rw,nosuid,nodev,noexec 0 0
udev /dev/ tmpfs rw,nosuid,size=1024k,mode=755 0 0
devpts /dev/pts devpts rw,nosuid,noexec,gid=5,mode=620 0 0
usbfs /proc/bus/usb usbfs rw,nosuid,noexec 0 0
I am using PXE and I see that I already have the 'rw' in the append option.
Code:
DEFAULT /bzImage
APPEND ip=dhcp rootfstype=nfs root=/dev/nfs nfsroot=10.0.0.10:/diskless/10.0.1.1,nolock,rw
However, what I don't understand is why I'm seeing the 'Root-NFS: unknown option: rw' in my dmesg output as listed above. So I think my client is seeing the 'rw', but it's not accepting it.
Another thing I see when it boots is the following ...
Code:
(can't see/copy what's on the screen at this point, then I see the following)
/lib64/udev/shell-compat.sh: line 6: /dev/null: Read-only file system
/lib64/udev/shell-compat.sh: line 6: /dev/null: Read-only file system
/lib64/udev/shell-compat.sh: line 6: /dev/null: Read-only file system
/lib64/udev/shell-compat.sh: line 6: /dev/null: Read-only file system
* Mounting /dev ... [ ok ]
* Starting udevd ... [ ok ]
* Populating /dev with existing devices through uevents [ ok ]
* Waiting for uevents to be processed ...
udevd-event][1426]: rename_netif: error changing netif name eth0 to eth2: Device or resource busy
[ ok ]
Mounting devpts at /dev/pts ... [ ok ]
* Skipping /etc/mtab initialization (ro root?)
* Updating modules.dep ...
FATAL: Could not open /lib/modules/2.6.26-gentoo-r4/modules.dep.temp for writing: Read-only file system
rm: cannot remove '/fastboot': Read-only file system
* Failed to start /etc/init.d/checkfs
* One or more critical sstartup scripts failed to start!
* Please correct this, and reboot ...
Give root password for maintenance
(or type Control-D to continue):
Any help much appreciated. |
