hello
Thanks for the reply , but its not working after executing the command as you said.
But when i insert USB then it works .all commands check below please
{master:0}
nsn> request system snapshot slice alternate
fpc0:
--------------------------------------------------------------------------
Formatting alternate root (/dev/da0s1a)...
Copying '/dev/da0s2a' to '/dev/da0s1a' .. (this may take a few minutes)
The following filesystems were archived: /
{master:0}
nsn>
{master:0}
nsn> show system snapshot
fpc0:
--------------------------------------------------------------------------
Information for snapshot on external (/dev/da1s1a) (backup)
Creation date: Jun 24 08:10:30 2011
JUNOS version on snapshot:
jbase : 11.2R1.2
jkernel-ex: 11.2R1.2
jcrypto-ex: 11.2R1.2
jdocs-ex: 11.2R1.2
jswitch-ex: 11.2R1.2
jpfe-ex42x: 11.2R1.2
jroute-ex: 11.2R1.2
jweb-ex: 11.2R1.2
Information for snapshot on external (/dev/da1s2a) (primary)
Creation date: Jun 24 08:13:03 2011
JUNOS version on snapshot:
jbase : 11.2R1.2
jkernel-ex: 11.2R1.2
jcrypto-ex: 11.2R1.2
jdocs-ex: 11.2R1.2
jswitch-ex: 11.2R1.2
jpfe-ex42x: 11.2R1.2
jroute-ex: 11.2R1.2
jweb-ex: 11.2R1.2
{master:0}
you see ? but it is with the USB , and when i removed USB
request system snapshot
fpc0:
--------------------------------------------------------------------------
error: external (/dev/da1) media missing or invalid
{master:0}
1> request system snapshot media internal
fpc0:
--------------------------------------------------------------------------
error: Cannot snapshot to current boot device
i dont understand this behaviour .