can not boot

[vofsky]

Could anyone give me a hand?We have a J6750 but today it can not start.It halted when NFS core Subsystem start,it indicates NFS core Subsystem busy and then os halted.I enter the single user mode but I can not use vi command and I have mount -a and found nothing in the /usr/bin/ directory but rsh,sh,posix...,So how can I do next?Thank you in advance!

[RAC_1]

When it comes to NFS part do a SHIFT + DEL
That will skip NFS part and boot.

Do you have NFS mounts in /etc/fstab? If yes check if those servers are accessible, can you mount manually after boot and after startinf NFS processes?

[Karthik S S]

Boot into single user mode.

Do the following,

mountall should mount all the required file systems.
TERM=vt100 (if it doesn't work try vt220 or ansi)
export TERM

I am not sure if your /usr/bin comes from a NFS share.
review /etc/fstab if it contains any NFS mounts.

Post /etc/fstab

-Karthik S S

[Steven E. Protter]

NFS problems are commonly triggered by network configuration mistakes.

/etc/rc.config.d/netconf

If you have recently made changes check the syntax. Even a misplaced dot once did this to me.

SEP

[Kent Ostby]

To break past the hang, you can also type:

shift-cntl-|

To check the integrity of the netconf config file, type:

. /etc/rc.config.d/netconf

If anything is printed other then a return to the prompt then there is a syntax error )(look for missing quote marks as a common thing) and the file should be modified.

Best regards,

Kent Ostby

[Bill Hassell]

NFS subsystem hangs are very common when rebooting if your network configurastion is incorrect (IP address, hostname too long, bad subnet mask, etc). It is best to always leave the file /etc/rc.config.c/nfsconf with all the =1 lines changed to =0

Also, you can use vi in single user mode. In single user mode, most of the mountpoints are not mounted. Just issue the commands:

mount /var
mount /tmp
mount /usr

and now vi will work just fine.