This article provides an example explaining the outcome when upgrading Junos OS with the partition option. According to this test there is no need to use the no-copy and unlink option when using the partition option.

For a similar example using the unlink option, see KB32191 - Example - Upgrade Junos OS with unlink option on SRX [juniper.net] .

For a similar example using the no-copy option, see KB32190 - Example - KB32190 - Example - Upgrade Junos OS with no-copy option on SRX [juniper.net] .

Note: The Installation and Upgrade Guide provides an example of the common method to upgrade Junos OS on SRX devices; however, if your installation requires using different options, these examples explain the outcome.

Below is the output when upgrading Junos OS with the partition option, on SRX branch devices.

Junos OS Upgrade With partition Option

Before Upgrade

root@SRX-345-2> show version
Hostname: SRX-345-2
Model: srx345
Junos: 15.1X49-D70.3
JUNOS Software Release [15.1X49-D70.3]

root@SRX-345-2> show system snapshot media internal 
Information for snapshot on       internal (/dev/da0s1a) (primary)
Creation date: Sep 18 08:35:24 2017
JUNOS version on snapshot:
  junos  : 15.1X49-D70.3-domestic
Information for snapshot on       internal (/dev/da0s2a) (backup)
Creation date: Sep 18 08:56:49 2017
JUNOS version on snapshot:
  junos  : 15.1X49-D70.3-domestic
 
root@SRX-345-2> file list /var/tmp/    
 
/var/tmp/:
Test upgrade with partition　<<<<<<<< Test file created show that file is deleted after install
appidd_trace_debug
cleanup-pkgs.log
eedebug_bin_file
gksdchk.log
gres-tp/
idp_license_info
install/
kmdchk.log
krt_rpf_filter.txt
nsd_restart
phone-home/
pics/
policy_status
rtsdb/
sd-upgrade/
sec-download/
spu_kmd_init
vi.recover/
vpn_tunnel-_orig.id
vpn_tunnel_orig.id
 
root@SRX-345-2> file list /var/tmp/install/           
 
/var/tmp/install/:
junos-srxsme-15.1X49-D110.4-domestic.tgz　<<<<<<Install package</span>
            
root@SRX-345-2> file list /var/sw/pkg/        
 
/var/sw/pkg/:
upgrade Junos with partition option/  <<<<<<<<Test folder</span>

root@SRX-345-2> root@SRX-345-2> request system software add no-validate partition /var/tmp/install/junos-srxsme-15.1X49-D110.4-domestic.tgz            
Checking for free space on /var/tmp/install
Copying package /var/tmp/install/junos-srxsme-15.1X49-D110.4-domestic.tgz to /var/tmp/install
Checking for basic sanity of copied package
WARNING: Installation with partition option will take several minutes to complete
WARNING: Please do not power-cycle the system till the installation is over
WARNING: A reboot is required to install the software
WARNING:     Use the 'request system reboot' command immediately

After upgrade

root@SRX-345-2> show version
Model: srx345
Junos: 15.1X49-D110.4
JUNOS Software Release [15.1X49-D110.4]

root@SRX-345-2> show system snapshot media internal 
Information for snapshot on       internal (/dev/da0s1a) (primary)
Creation date: Sep 19 02:31:19 2017
JUNOS version on snapshot:
  junos  : 15.1X49-D110.4-domestic
Information for snapshot on       internal (/dev/da0s2a) (backup)
Creation date: Sep 19 02:29:41 2017
JUNOS version on snapshot:
  junos  : 15.1X49-D110.4-domestic

In the output below, note that the test file "Test upgrade with partition" was deleted, so there is no need to use no-copy and unlink option.

root@SRX-345-2> file list /var/tmp/

/var/tmp/:
appidd_trace_debug
cleanup-pkgs.log
eedebug_bin_file
gksdchk.log
gres-tp/
idp_license_info
install/
kmdchk.log
krt_rpf_filter.txt
nsd_restart
phone-home/
pics/
policy_status
rtsdb/
sd-upgrade/
sec-download/
spu_kmd_init
vi.recover/
vpn_tunnel_orig.id

root@SRX-345-2>

In the output below, note that the install package was deleted.

root@SRX-345-2> file list /var/tmp/install/   

/var/tmp/install/:

root@SRX-345-2>

In the output below, note that the test folder "upgrade Junos with partition option" was deleted.

root@SRX-345-2> file list /var/sw/pkg/

/var/sw/pkg/:

root@SRX-345-2>