Junos OS

Dear sir,

 

I upgrade the Junos (M10i) ,when I reboot the router , the router stayed at "debugging subshell" .Below is the log.

 

_________________

ad1: 38154MB <HTE541040G9AT00> [77520/16/63] at ata0-slave using UDMA33
Mounting root from cd9660:/dev/md0c
Disabling watchdog
=================== Bootstrap installer starting ===================
Initialized the environment
Routing engine model is RE-850
Sourcing /sbin/RE-850
Discovered that flash disk = ad0 , hard disk = ad1
WARNING: R/W mount of /var denied.  Filesystem is not clean - run fsck
mount: /dev/ad1s1f: Operation not permitted
ERROR: mount_partition: Mount /dev/ad1s1a /mnt failed
You are now in a debugging subshell (you may not see a prompt)...
#

 

_______________-

 

How I can do to reboot the router at nomal.

The boot failed because one of the filesystems is in an inconsistent state.  You'll need to manually run fsck on the /var partition (/dev/ad1s1f) and get things cleaned up before it will boot normally.

Thanks for Bantoph & Loup2.

I had solved this case.

 

First  I used command" fsck /dev/ad1s1a"  It would't run

Then I used command" fsck -y ufs /dev/ad1s1a" and "fsck -y ufs /dev/ad1s1f"

Then reboot the router.

 

And then I was OK.

 

Hi,

I have a similar problem and followed the same suggested solution but the router still returns to debugging subshell after a reboot. 

 

Timecounter "TSC" frequency 398935746 Hz quality 800
Timecounters tick every 1.000 msec
md0: Preloaded image </boot/modules/mdimg> 5783552 bytes at 0xc09ed554
ad1: 38154MB <FUJITSU MHV2040AS 00000096> at ata0-slave UDMA33
Trying to mount root from cd9660:/dev/md0
Disabling watchdog
=================== Bootstrap installer starting ===================
Initialized the environment
Routing engine model is RE-5.0
Discovered that flash disk = ad0 , hard disk = ad1
ERROR: discover_install_drive: tmp/preinstall/install.conf not found
You are now in a debugging subshell (you may not see a prompt)...
# 

 

This is in the debugging subshell prompt with the directories output.

 

# pwd
/
# ls
anim        dev        mnt        tmp
bin        etc        packagemnt    usr
boot        instrootmnt    sbin        var
# df -k
Filesystem  512-blocks   Used    Avail Capacity  Mounted on
/dev/md0         11296  11296        0   100%    /
devfs                2      2        0   100%    /dev
devfs                2      2        0   100%    /dev
/dev/ad1s1f   73308120 643000 66800472     1%    /mnt

 

 

 

I was able to run the fsck in /dev/ad1s1f  but it failed when I ran it in /dev/md0.

 

# fsck -y /dev/admd0
fsck: exec fsck_cd9660 for /dev/md0: No such file or directory
# fsck /-y /dev/ad1s1f
** /dev/ad1s1f (NO WRITE)
** Last Mounted on /mnt
** Phase 1 - Check Blocks and Sizes
** Phase 2 - Check Pathnames
** Phase 3 - Check Connectivity
** Phase 4 - Check Reference Counts
** Phase 5 - Check Cyl groups
200 files, 160750 used, 18166280 free (464 frags, 2270727 blocks, 0.0% fragmentation)

 

My customer had a similar issue on a MX960 with RE-1800 and we fix it by

doing a “request system snapshot”.

Hi

 

Which versions of Junos where you starting at and moving to ?

 

We've had one problem (complete crash after upgrade) when we moved from V8.2 to V8.5

We had the command mirror-flash-on disk in the global "system" configuration of the router and the M10i was stuck in the db prompt after upgrade.

 

I think the simpliest way to start your router back is to use a reinstall media software on a PCMCIA compact flash:

 

See the posts regarding this kind of installation:

http://forums.juniper.net/jnet/board/message?board.id=JUNOS&message.id=204

http://forums.juniper.net/jnet/board/message?board.id=JUNOS&message.id=208

 

I don't know if you are in the same case as I was ?

HTH