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Recover SRX from snapshot on USB

‎04-10-2019 08:39 AM

Hi all,

 

I have a SRX that is in the db> mode and it doesn't recover the partitions and take me to the logon prompt. I have a snapshot of a working device saved to a USB. I would like to instruct the corrupt Juniper SRX to boot from the snapshot in USB.

 

Could you please let me know how to do that ? Is it a straightforward thing like I just plug in the USB which has the working snapshot and reboot the device manually or I need to mention the boot source as USB somewhere in the db> prompt ?

 

Please let me know ASAP.

 

Thanking you.

Regards,

Pavan 

 

 

4 REPLIES 4
SRX Services Gateway

Re: Recover SRX from snapshot on USB

‎04-10-2019 08:55 AM
Connect the USB and then reboot srx. It should boot from the USB if it has a working snapshot.
Thanks,
Nellikka
JNCIE x3 (SEC #321; SP #2839; ENT #790)
Please Mark My Solution Accepted if it Helped, Kudos are Appreciated too!!!
SRX Services Gateway
Solution
Accepted by topic author pavan430
‎04-17-2019 06:37 AM

Re: Recover SRX from snapshot on USB

‎04-10-2019 10:16 AM

Pavan,

 

 

  • Plug a USB drive into a known healthy SRX which is of the same model and configuration as the faulty device. Run the following command:

 

 

>request system snapshot media usb 

 

  • When the snapshot is complete, power down the faulty SRX. Remove the USB from the healthy SRX and plug it into the faulty SRX.


  • Power on the faulty device on and see if it will boot from the USB drive.


  • If it does, then snapshot the image from the USB drive back onto the compact flash (CF) with the following command:

 

>request system snapshot media internal 

 

This will load the image from the USB onto the SRX's internal compact flash.

 

 

  • Then reboot the device from the compact flash. Use the following command:

 

>request system reboot media internal


Note: Taking a snapshot of the healthy device will also take a snapshot of the configuration, and will load the same configuration on the faulty device.

 

Reference: https://kb.juniper.net/InfoCenter/index?page=content&id=KB29811 

 

Also if you manage to get to loader prompt, you can try: 

 

https://kb.juniper.net/InfoCenter/index?page=content&id=KB33005&cat=SRX_SERIES&actp=LIST&showDraft=f...

 

 

 

 

Pura Vida from Costa Rica - Mark as Resolved if it applies.
Kudos are appreciated too!
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Re: Recover SRX from snapshot on USB

2 weeks ago

if i snapshot from SRX110 to recovery junos on SRX300, 

it will be working?

 

thank for advance

 

last i tried,

 

the message stuct at "inet regular console"

 

Hit [Enter] to boot immediately, or space bar for command prompt.
Booting [/kernel]...
Kernel entry at 0x801000e0 ...
init regular console

SRX Services Gateway

Re: Recover SRX from snapshot on USB

2 weeks ago
if i snapshot from SRX110 to recovery junos on SRX300, 

it will be working?

No the snapshots have to be from the same model of gear.

 

It is a good idea to take a usb snapshot for recovery after upgrades and have that available.

 

 

Steve Puluka BSEET - Juniper Ambassador
IP Architect - DQE Communications Pittsburgh, PA (Metro Ethernet & ISP)
http://puluka.com/home