won't mount /usr...won't boot fully

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Operating Systems AIX won't mount /usr...won't boot fully
# 1  
Old 10-06-2008
won't mount /usr...won't boot fully

NOOB here. I attempted to use smit mkcd. Failed on first attempt, not enough space. 2nd attempt tried to place iso on /usr, not enough space there. Cleanup ran for about 5 minutes after aborting. Now AIX won't boot. LCD display on 7029-6E3 says: 0517 MOUNT /USR. Attempted to boot from CD AIX 5L POWER V 5.2 5765-E62 Volume 1 of 7 disk with no luck.

Apparently I'm supposed to hit F5 on keyboard when I see the word keyboard on the boot screen. It goes too fast and always boots to AIX screen:


Welcome to AIX
boot image timestamp: 15:32
closing stdin and stdout...

The drive in the machine is a DVD drive. All I want to do is boot into maintenace mode so I can hopefully clean up the /USR fs and get back up and running.

Can some please comment on the errors of my ways and point me in the right direction please?!?


# 2  
Old 10-09-2008
I believe you should be pressing "1" to go into SMS mode not F5. Once you get into maintenance mode, there is a very limited set of commands you can use if /usr cannot be mounted. Your only option may be a restore at this point.
# 3  
Old 10-09-2008
You are correct and I figured that out. I've spoken to a consultant and it looks as though a restore is needed. Thanks for the reply.
# 4  
Old 10-09-2008
did you try and fsck /usr while in maintenance mode?
# 5  
Old 10-09-2008
no i didn't. To be totally honest, I'm scared, as I don't have a great backup of this data. It has been suggested, but being a noob... I'm thinking that that the problem is the /usr fs is too full to do anything. After investigating I'm concerned the rootvg may be hosed as well. My stomach hurts....
# 6  
Old 10-09-2008
Do you get any message while /usr can't be mounted? I doubt it can't be mounted because it's full. Maybe you are better off to use fsck like dig1tal suggested. That would be what I would do in this case too. fsck will ask you if something should be tried to be fixed etc.
At least you might be able after this to reboot.

What data could be lost? Is your non-OS data in the rootvg and saved with your mksysb or being excluded and backed up by some network backup software?
# 7  
Old 10-09-2008
mount /usr
on the LCD display on the RS/6000 server
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