Switching

IMPORTANT MODERATION NOTICE

This community is currently under full moderation, meaning  all posts will be reviewed before appearing in the community. Please expect a brief delay—there is no need to post multiple times. If your post is rejected, you'll receive an email outlining the reason(s). We've implemented full moderation to control spam. Thank you for your patience and participation.



  • 1.  error: external (/dev/da1) media missing or invalid on EX4200 switch

    Posted 05-23-2015 07:56

    hello Friends ,

     

    In the process of upgradation of EX4200 new switch from 11.2 to 12.3R6 ,  i excute the command   "request system snap shot.

     

    but i found below error .

     

    request system snapshot

    fpc0:

    --------------------------------------------------------------------------

    error: external (/dev/da1) media missing or invalid

     

     

    then i again execute the command 

     

     

    {master:0}

    1> request system snapshot media internal

    fpc0:

    --------------------------------------------------------------------------

    error: Cannot snapshot to current boot device

     

     

    please advice me solution to over come this error ,

     

     

    i want to copy Junos on both partitions .

     

     

     

     



  • 2.  RE: error: external (/dev/da1) media missing or invalid on EX4200 switch

     
    Posted 05-23-2015 18:02

    You seem to be requesting the snapshot to the current partition.  Try using this version of the command.

     

    sw>request system snapshot slice alternate


  • 3.  RE: error: external (/dev/da1) media missing or invalid on EX4200 switch

    Posted 05-24-2015 22:29

    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 .

     



  • 4.  RE: error: external (/dev/da1) media missing or invalid on EX4200 switch
    Best Answer

     
    Posted 05-25-2015 05:48

    It would appear that this swtich shipped prior to the dual boot Junos.  So in order to get the dual partitions the internal flash will need to be reformated during the Junos upgrade.  Basically, you delete and recreate all the partitions during the upgrade process.

     

    You should keep that USB snapshot backup handy in case there are issues with the process.

     

    There is an extensive kb article linked below on the subject that explains the process.

     

    http://kb.juniper.net/InfoCenter/index?page=content&id=KB21062



  • 5.  RE: error: external (/dev/da1) media missing or invalid on EX4200 switch

    Posted 05-25-2015 23:21

    hello

    Thanks for the reply , yes these are new switches and since day 1 i am facing this problem . I am agree with you if we can format the partitions and then re install the problem can be solved .

     

    can you please share the KB how to format .

     

    thanks

     

    shujaat asif

     

    NOKIA SOLUTIONS AND NETWORKS.



  • 6.  RE: error: external (/dev/da1) media missing or invalid on EX4200 switch

     
    Posted 05-26-2015 03:35

    The kb I link above has all the information detailed out which varies by model and versions of Junos.

     

    Basically, you need to:

     

    confirm the jloader version and upgrade as needed

    Confirm the upgrade path on your current device performs the dual root partition or downgrade to supported upgrade paths

     

    With a process this complicated you may want to open an offical JTAC trouble ticket and have an engineer work with you live to walk through the process.

     

    JTAC Create a Case

    https://casemanager.juniper.net/casemanager/#/create



  • 7.  RE: error: external (/dev/da1) media missing or invalid on EX4200 switch

    Posted 10-23-2015 11:27
      |   view attached

    Hi guys

     

    I have the same issue with EX4600 14.1X53-D27.

     

    I have been follow this post but also with USB plugged I cannot do snapshot.

     

    Please see attached show and if you can give me a feedback

     

    best regards

     

    Antonio

    Attachment(s)



  • 8.  RE: error: external (/dev/da1) media missing or invalid on EX4200 switch

     
    Posted 09-08-2021 08:31
    Hi all,

    Although an old link, I'm still seeing friends stumble on this one.  So to clarify, the right command for EX is "request system snapshot slice alternate" that copies the junos from primary (active) partition to the backup.

    root@jtac-ex4300-32f:RE:1% cli                                                                                                                                    
    {master:1}                                                                                                                                                                    
    root@jtac-ex4300-32f> show system snapshot media internal                                                                                                         
    fpc1:                                                                                                                                                                         
    --------------------------------------------------------------------------                                                                                                    
    Information for snapshot on       internal (/dev/da0s1a) (backup)                                                                                                             
    Creation date: Jul 16 06:35:02 2019                                                                                                                                           
    JUNOS version on snapshot:                                                                                                                                                    
      jcrypto-ex: 18.3I20190716_0533_juniper                                                                                                                                      
      jdocs-ex: 18.3I20190716_0533_juniper                                                                                                                                        
      jphone-home: 18.3I20190716_0533_juniper                                                                                                                                     
      jsd    : powerpc-18.3I20190716_0533_juniper-jet-1                                                                                                                           
      jsdn-powerpc: 18.3I20190716_0533_juniper                                                                                                                                    
      junos  : ex-18.3I20190716_0533_juniper                                                                                                                                      
      junos-ex-4300: 18.3I20190716_0533_juniper                                                                                                                                   
      jweb-ex: 18.3I20190716_0533_juniper                                                                                                                                         
    Information for snapshot on       internal (/dev/da0s2a) (primary)                                                                                                            
    Creation date: Jan 9 04:29:39 2020                                                                                                                                            
    JUNOS version on snapshot:                                                                                                                                                    
      jcrypto-ex: 17.3R3-S5.2                                                                                                                                                     
      jdocs-ex: 17.3R3-S5.2                                                                                                                                                       
      jsd    : powerpc-17.3R3-S5.2-jet-1                                                                                                                                          
      jsdn-powerpc: 17.3R3-S5.2                                                                                                                                                   
      junos  : ex-17.3R3-S5.2                                                                                                                                                     
      junos-ex-4300: 17.3R3-S5.2                                                                                                                                                  
      jweb-ex: 17.3R3-S5.2                                                                                                                                                        
    {master:1}                                                                                                                                                                    
    root@jtac-ex4300-32f> request system snapshot media internal                                                                                                      
    fpc1:                                                                                                                                                                         
    --------------------------------------------------------------------------                                                                                                    
    error: Cannot snapshot to current boot device                                                                                                                                 
                                                                                                                                                                                  
    {master:1}                                                                                                                                                                    
    root@jtac-ex4300-32f> show system snapshot                                                                                                                        
    fpc1:                                                                                                                                                                         
    --------------------------------------------------------------------------                                                                                                    
    error: external media missing or invalid                                                                                                                                      
                                                                                                                                                                                  
    {master:1}                                                                                                                                                                    
    root@jtac-ex4300-32f> show system snapshot media internal                                                                                                         
    fpc1:                                                                                                                                                                         
    --------------------------------------------------------------------------                                                                                                    
    Information for snapshot on       internal (/dev/da0s1a) (backup)                                                                                                             
    Creation date: Jul 16 06:35:02 2019                                                                                                                                           
    JUNOS version on snapshot:                                                                                                                                                    
      jcrypto-ex: 18.3I20190716_0533_juniper                                                                                                                                      
      jdocs-ex: 18.3I20190716_0533_juniper
      jphone-home: 18.3I20190716_0533_juniper                                                                                                                                     
      jsd    : powerpc-18.3I20190716_0533_juniper-jet-1                                                                                                                           
      jsdn-powerpc: 18.3I20190716_0533_juniper                                                                                                                                    
      junos  : ex-18.3I20190716_0533_juniper                                                                                                                                      
      junos-ex-4300: 18.3I20190716_0533_juniper                                                                                                                                   
      jweb-ex: 18.3I20190716_0533_juniper                                                                                                                                         
    Information for snapshot on       internal (/dev/da0s2a) (primary)                                                                                                            
    Creation date: Jan 9 04:29:39 2020                                                                                                                                            
    JUNOS version on snapshot:                                                                                                                                                    
      jcrypto-ex: 17.3R3-S5.2                                                                                                                                                     
      jdocs-ex: 17.3R3-S5.2                                                                                                                                                       
      jsd    : powerpc-17.3R3-S5.2-jet-1                                                                                                                                          
      jsdn-powerpc: 17.3R3-S5.2                                                                                                                                                   
      junos  : ex-17.3R3-S5.2                                                                                                                                                     
      junos-ex-4300: 17.3R3-S5.2                                                                                                                                                  
      jweb-ex: 17.3R3-S5.2                                                                                                                                                        
    {master:1}                                                                                                                                                                    
    root@jtac-ex4300-32f> request system snapshot ?                                                                                                                   
    Possible completions:                                                                                                                                                         
      <[Enter]>            Execute this command                                                                                                                                   
      all-members          Archive data and executable areas of all virtual chassis members                                                                                       
      config-partition     Write snapshot of config partition alone                                                                                                               
      local                Archive data and executable areas of local virtual chassis member                                                                                      
      media                Media to snapshot to                                                                                                                                   
      member               Archive data and executable areas of specific virtual chassis member                                                                                   
      partition            Partition the media                                                                                                                                    
      root-partition       Write snapshot of root partition alone                                                                                                                 
      slice                Write snapshot to specified partition                                                                                                                  
      |                    Pipe through a command                                                                                                                                 
    {master:1}                                                                                                                                                                    
    root@jtac-ex4300-32f> request system snapshot partition ?                                                                                                         
    Possible completions:                                                                                                                                                         
      <[Enter]>            Execute this command                                                                                                                                   
      all-members          Archive data and executable areas of all virtual chassis members                                                                                       
      config-partition     Write snapshot of config partition alone                                                                                                               
      local                Archive data and executable areas of local virtual chassis member                                                                                      
      media                Media to snapshot to                                                                                                                                   
      member               Archive data and executable areas of specific virtual chassis member                                                                                   
      root-partition       Write snapshot of root partition alone                                                                                                                 
      |                    Pipe through a command                                                                                                                                 
    {master:1}                                                                                                                                                                    
    root@jtac-ex4300-32f> request system snapshot partition local ?                                                                                                   
    Possible completions:                                                                                                                                                         
      <[Enter]>            Execute this command                                                                                                                                   
      config-partition     Write snapshot of config partition alone                                                                                                               
      media                Media to snapshot to                                                                                                                                   
      root-partition       Write snapshot of root partition alone                                                                                                                 
      |                    Pipe through a command                                                                                                                                 
    {master:1}                                                                                                                                                                    
    root@jtac-ex4300-32f> request system snapshot partition local                                                                                                     
    error: external (/dev/da1) media missing or invalid                                                                                                                           
                                                                                                                                                                                  
    {master:1}                                                                                                                                                                    
    root@jtac-ex4300-32f> show system snapshot media internal                                                                                                         
    fpc1:                                                                                                                                                                         
    --------------------------------------------------------------------------                                                                                                    
    Information for snapshot on       internal (/dev/da0s1a) (backup)                                                                                                             
    Creation date: Jul 16 06:35:02 2019                                                                                                                                           
    JUNOS version on snapshot:                                                                                                                                                    
      jcrypto-ex: 18.3I20190716_0533_juniper                                                                                                                                      
      jdocs-ex: 18.3I20190716_0533_juniper                                                                                                                                        
      jphone-home: 18.3I20190716_0533_juniper                                                                                                                                     
      jsd    : powerpc-18.3I20190716_0533_juniper-jet-1                                                                                                                           
      jsdn-powerpc: 18.3I20190716_0533_juniper                                                                                                                                    
      junos  : ex-18.3I20190716_0533_juniper                                                                                                                                      
      junos-ex-4300: 18.3I20190716_0533_juniper                                                                                                                                   
      jweb-ex: 18.3I20190716_0533_juniper                                                                                                                                         
    Information for snapshot on       internal (/dev/da0s2a) (primary)                                                                                                            
    Creation date: Jan 9 04:29:39 2020                                                                                                                                            
    JUNOS version on snapshot:                                                                                                                                                    
      jcrypto-ex: 17.3R3-S5.2                                                                                                                                                     
      jdocs-ex: 17.3R3-S5.2                                                                                                                                                       
      jsd    : powerpc-17.3R3-S5.2-jet-1                                                                                                                                          
      jsdn-powerpc: 17.3R3-S5.2                                                                                                                                                   
      junos  : ex-17.3R3-S5.2                                                                                                                                                     
      junos-ex-4300: 17.3R3-S5.2                                                                                                                                                  
      jweb-ex: 17.3R3-S5.2                                                                                                                                                        
                                                                                                                                  
    {master:1}                                                                                                                                                                    
    root@jtac-ex4300-32f> request system snapshot slice ?                                                                                                             
    Possible completions:                                                                                                                                                         
      alternate            Write snapshot to alternate partition                                                                                                                  
    {master:1}                                                                                                                                                                    
    root@jtac-ex4300-32f> request system snapshot slice alternate                                                                                                     
    fpc1:                                                                                                                                                                         
    --------------------------------------------------------------------------                                                                                                    
    Formatting alternate root (/dev/da0s1a)...                                                                                                                                    
    Copying '/dev/da0s2a' to '/dev/da0s1a' .. (this may take a few minutes)                                                                                                       
    The following filesystems were archived: /                                                                                                                                    
                                                                                                                                                                                  
    {master:1}                                                                                                                                                                    
    root@jtac-ex4300-32f>                                                                                                                                             
     
    {master:1}                                                                                                                                                                    
    root@jtac-ex4300-32f> show system snapshot media internal                                                                                                         
    fpc1:                                                                                                                                                                         
    --------------------------------------------------------------------------                                                                                                    
    Information for snapshot on       internal (/dev/da0s1a) (backup)                                                                                                             
    Creation date: Sep 8 10:03:55 2021                                                                                                                                            
    JUNOS version on snapshot:                                                                                                                                                    
      jcrypto-ex: 17.3R3-S5.2                                                                                                                                                     
      jdocs-ex: 17.3R3-S5.2                                                                                                                                                       
      jsd    : powerpc-17.3R3-S5.2-jet-1                                                                                                                                          
      jsdn-powerpc: 17.3R3-S5.2                                                                                                                                                   
      junos  : ex-17.3R3-S5.2                                                                                                                                                     
      junos-ex-4300: 17.3R3-S5.2                                                                                                                                                  
      jweb-ex: 17.3R3-S5.2                                                                                                                                                        
    Information for snapshot on       internal (/dev/da0s2a) (primary)                                                                                                            
    Creation date: Jan 9 04:29:39 2020                                                                                                                                            
    JUNOS version on snapshot:                                                                                                                                                    
      jcrypto-ex: 17.3R3-S5.2                                                                                                                                                     
      jdocs-ex: 17.3R3-S5.2                                                                                                                                                       
      jsd    : powerpc-17.3R3-S5.2-jet-1                                                                                                                                          
      jsdn-powerpc: 17.3R3-S5.2                                                                                                                                                   
      junos  : ex-17.3R3-S5.2                                                                                                                                                     
      junos-ex-4300: 17.3R3-S5.2                                                                                                                                                  
      jweb-ex: 17.3R3-S5.2    



    Hope this helps.
    Regards,
    -r.
    --------------------------------------------------
    If this solves your problem, please mark this post as "Accepted Solution."
    Kudos are always appreciated :).