Similar to T257153 but for EX switches.
We need to:
1/ go over all the EX switches and run show system snapshot media internal and check if there are any discrepancies between the primary and the backup partitions.
For example:
fpc8: -------------------------------------------------------------------------- Information for snapshot on internal (/dev/da0s1a) (primary) Creation date: Mar 22 10:46:30 2017 JUNOS version on snapshot: jdocs-ex: 14.1X53-D42.3 junos : ex-14.1X53-D42.3 junos-ex-4300: 14.1X53-D42.3 jweb-ex: 14.1X53-D42.3 Information for snapshot on internal (/dev/da0s2a) (backup) Creation date: Dec 1 16:00:58 2016 JUNOS version on snapshot: jdocs-ex: 15.1R4.6 junos : ex-15.1R4.6 junos-ex-4300: 15.1R4.6 jweb-ex: 15.1R4.6
If any, run request system snapshot slice alternate member X (no impact)
Note that the QFXs and EX4600 only support snapshots on USB drives.
2/ Update the doc (done)