Switching

Through some sequence of errors I made a stand alone EX4200 see da0s1a as backup and it has now booted from da0s2a.

It does no show the "booted from backup" error. I fixed that, but cannot get it to boot from da0s1a.

Here's the output:

root> show chassis alarms
2 alarms currently active
Alarm time               Class  Description
2014-03-13 10:03:50 UTC  Major  Management Ethernet Link Down
2014-03-13 10:03:48 UTC  Major  FPC 0 PEM 0 is not powered

{master:0}
root> show system storage partitions
fpc0:
--------------------------------------------------------------------------
Boot Media: internal (da0)
Active Partition: da0s2a
Backup Partition: da0s1a
Currently booted from: active (da0s2a)

Partitions information:
  Partition  Size   Mountpoint
  s1a        183M   altroot
  s2a        184M   /
  s3d        369M   /var/tmp
  s3e        123M   /var
  s4d        62M    /config

{master:0}
root> show system snapshot media internal
fpc0:
--------------------------------------------------------------------------
Information for snapshot on       internal (/dev/da0s1a) (backup)
Creation date: Mar 13 09:52:03 2014
JUNOS version on snapshot:
  jbase  : ex-12.3R6.6
  jkernel-ex: 12.3R6.6
  jcrypto-ex: 12.3R6.6
  jdocs-ex: 12.3R6.6
  jswitch-ex: 12.3R6.6
  jpfe-ex42x: 12.3R6.6
  jroute-ex: 12.3R6.6
  jweb-ex: 12.3R6.6
  fips-mode-powerpc: 12.3R6.6
Information for snapshot on       internal (/dev/da0s2a) (primary)
Creation date: Mar 13 09:37:16 2014
JUNOS version on snapshot:
  jbase  : ex-12.3R6.6
  jkernel-ex: 12.3R6.6
  jcrypto-ex: 12.3R6.6
  jdocs-ex: 12.3R6.6
  jswitch-ex: 12.3R6.6
  jpfe-ex42x: 12.3R6.6
  jroute-ex: 12.3R6.6
  jweb-ex: 12.3R6.6
  fips-mode-powerpc: 12.3R6.6

did you try this 'request system reboot slice alternate' and the switch cannot boot from this partition because of the file system corruption?

=====

If this worked for you please flag my post as an "Accepted Solution" so others can benefit. A kudo would be cool if you think I earned it.

Yep, tried that but it still boots from da0s2a and sees da0s1a as backup.

I don't think da0s1a is corrupted, because it did upgrade to 6.6 code.

Seems like I need a command to tell it to redefine da0s1a as primary and boot from it but can't find that command.

ok..i see what you mean...this will change during upgrades.

I don't think there is a way setting which partition is the active one on the fly(without upgrade).

Check this:

[edit]
root@EX# run show system storage partitions          
Boot Media: internal (da0)
Active Partition: da0s1a
Backup Partition: da0s2a
Currently booted from: active (da0s1a)

Partitions information:
  Partition  Size   Mountpoint
  s1a        183M   /         
  s2a        184M   altroot   
  s3d        369M   /var/tmp  
  s3e        123M   /var      
  s4d        62M    /config   

[edit]
root@EX# run show system snapshot media internal
Information for snapshot on       internal (/dev/da0s1a) (primary)
Creation date: Aug 25 12:04:37 2012
JUNOS version on snapshot:
  jbase  : ex-11.4R5.5
  jcrypto-ex: 11.4R5.5
  jdocs-ex: 11.4R5.5
  jkernel-ex: 11.4R5.5
  jroute-ex: 11.4R5.5
  jswitch-ex: 11.4R5.5
  jweb-ex: 11.4R5.5
     jpfe-ex42x: 11.4R5.5
Information for snapshot on       internal (/dev/da0s2a) (backup)
Creation date: Jun 14 05:00:01 2013
JUNOS version on snapshot:
  jbase  : ex-12.3R3.4
  jcrypto-ex: 12.3R3.4
  jdocs-ex: 12.3R3.4
  jkernel-ex: 12.3R3.4
  jroute-ex: 12.3R3.4
  jswitch-ex: 12.3R3.4
  jweb-ex: 12.3R3.4
   jpfe-ex42x: 12.3R3.4

[edit]
root@EX# ....12.3R6.6-domestic-signed.tgz reboot no-validate                   
Fetching package...
/var/tmp/incoming-package.tgz  



root@EX> show system storage partitions
Boot Media: internal (da0)
Active Partition: da0s2a
Backup Partition: da0s1a
Currently booted from: active (da0s2a)

Partitions information:
  Partition  Size   Mountpoint
  s1a        183M   altroot   
  s2a        184M   /         
  s3d        369M   /var/tmp  
  s3e        123M   /var      
  s4d        62M    /config   

root@EX> show system snapshot media internal
Information for snapshot on       internal (/dev/da0s1a) (backup)
Creation date: Aug 25 12:04:37 2012
JUNOS version on snapshot:
  jbase  : ex-11.4R5.5
  jkernel-ex: 11.4R5.5
  jcrypto-ex: 11.4R5.5
  jdocs-ex: 11.4R5.5
  jswitch-ex: 11.4R5.5
  jpfe-ex42x: 11.4R5.5
  jroute-ex: 11.4R5.5
  jweb-ex: 11.4R5.5
   fips-mode-powerpc: 11.4R5.5
Information for snapshot on       internal (/dev/da0s2a) (primary)
Creation date: Mar 13 10:40:03 2014
JUNOS version on snapshot:
  jbase  : ex-12.3R6.6
  jkernel-ex: 12.3R6.6
  jcrypto-ex: 12.3R6.6
  jdocs-ex: 12.3R6.6
  jswitch-ex: 12.3R6.6
  jpfe-ex42x: 12.3R6.6
  jroute-ex: 12.3R6.6
  jweb-ex: 12.3R6.6
  fips-mode-powerpc: 12.3R6.6           
                                        
root@EX>

So in your case you will have to install one more time the software.

=====

If this worked for you please flag my post as an "Accepted Solution" so others can benefit. A kudo would be cool if you think I earned it.

Thanks. Since I'm not getting any alarms, I'm moving forward with this as is.