A recent storm caused us to lose power and the next time I logged in into my SRX100H2 home router, I was greeted with this warning:
*********************************************************************** ** ** ** WARNING: THIS DEVICE HAS BOOTED FROM THE BACKUP JUNOS IMAGE ** ** ** ** It is possible that the primary copy of JUNOS failed to boot up ** ** properly, and so this device has booted from the backup copy. ** ** ** ** Please re-install JUNOS to recover the primary copy in case ** ** it has been corrupted. ** ** ** ***********************************************************************
Luckily, the fix was easy and kudos to Juniper for implementing the two-partition system. Here’s the fix:
request system snapshot slice alternate
To verify the procedure, issue the following command:
show system snapshot media internal
The results should look something like this:
Information for snapshot on internal (/dev/da0s1a) (backup) Creation date: Aug 14 18:06:53 2015 JUNOS version on snapshot: junos : 12.1X44-D35.5-domestic Information for snapshot on internal (/dev/da0s2a) (primary) Creation date: Jul 31 11:15:08 2016 JUNOS version on snapshot: junos : 12.1X44-D35.5-domestic