Snapshots are created only on Routing Engine on which the command "request system snapshot routing-engine both" was executed.
{master}
labuser@labhost-re0> show system snapshot
Nov 21 05:35:52
-------------------------------
node: re0
Current snapshot device: /dev/sdb
Snapshot boot device: sdb
List of installed version(s) in Snapshot boot device sdb:
[1] -> junos-evo-install-ptx-x86-64-21.4R3-S5.9-EVO - [2024-11-18 06:53:24]
'-' running version
'>' next boot version after upgrade/downgrade
'<' rollback boot version
node: re1
[1] -> junos-evo-install-ptx-x86-64-21.4R3-S5.9-EVO - [2024-05-24 17:01:21]
labuser@labhost-re0> request system snapshot routing-engine both
........
Starting Snapshot in device /dev/sdb
List of software versions getting copied to Snapshot...
[1] junos-evo-install-ptx-x86-64-21.4R3-S5.9-EVO
Software Snapshot completed.
[1] -> junos-evo-install-ptx-x86-64-21.4R3-S5.9-EVO - [2024-11-21 07:50:29]
Login to the backup RE either via OOB access or in-band access. Once logged in, please execute below command
{backup}
labuser@labhost-re1> request system snapshot routing-engine local
Nov 21 07:56:29
labuser@labhost-re1> show system snapshot
Nov 21 07:59:55
[1] -> junos-evo-install-ptx-x86-64-21.4R3-S5.9-EVO - [2024-11-21 07:57:03]