When The Hard Disk Is Removed From The Boot List; Verify That The Hard Disk Did Not Mount - Juniper M Series Monitoring And Troubleshooting Manual

When the Hard Disk Is Removed from the Boot List

Problem
Solution

Verify That the Hard Disk Did Not Mount

Problem
Solution
Copyright © 2012, Juniper Networks, Inc.
The following boot messages list on the console shows symptoms that signify a hard
disk failure. These messages are not in the
/dev/ad1s1f: CAN'T CHECK FILE SYSTEM.
/dev/ad1s1f: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY.
Can't open /dev/ad1s1f: Device not configured
WARNING:
WARNING: /var mount failed, building emergency /var
WARNING:
dumpon: sysctl: kern.dumpdev: Device not configured
mgd: commit complete
dumpon: sysctl: kern.dumpdev: Device not configured
mgd: commit complete
The boot messages show that the hard disk (ad1) was removed from the boot list (using
Junos OS, Release 6.1R1.4).
To verify that the hard disk (
user@host> show system storage
The following sample output was taken from a RE-333 Routing Engine.
user@host> show system storage
Filesystem 512-blocks
/dev/ad0s1a 218690
devfs
/dev/vn0 20044
devfs
/dev/vn1 51920
/packages/mnt/jkernel-6.1R1.4
/dev/vn2 22328
/packages/mnt/jpfe-M160-6.1R1.4
/dev/vn3
/packages/mnt/jdocs-6.1R1.4
/dev/vn4 23328
/packages/mnt/jroute-6.1R1.4
/dev/vn5
/packages/mnt/jcrypto-6.1R1.4
mfs:139 127006
/dev/ad0s1e 24234
procfs
The command shows that the hard disk (
only in the swap partition (
the next reboot.
user@host> start shell
user@host% ls -l /
total 47
-rw-r--r-- 1 root wheel
dr-xr-xr-x 2 root wheel
dr-xr-xr-x 2 root wheel
drwxr-xr-x 2 root wheel
dr-xr-xr-x 3 root wheel
boot-messages
) did not get mounted, use the following command:
ad1
Used Avail Capacity Mounted on
60294 140902
32 32
20044
32 32
51920
22328
3844 3844
23328
8820 8820
16914 99932
28 22268
8 8
) is not mounted. Instead,
ad1
), so any contents saved to
mfs:139
4735 Mar 31 2001 COPYRIGHT
512 Jan 20 2004 altconfig
512 Jan 20 2004 altroot
512 Dec 29 12:00 bin
512 Feb 4 23:16 boot
Chapter 6: Monitoring the Routing Engine
log file.
30% /
0 100% /dev/
0 100% /packages/mnt/jbase
0 100% /dev/
0 100%
0 100%
0 100%
0 100%
0 100%
14% /tmp
0% /config
0 100% /proc
now exists
/var
will not be saved at
/var
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