Following notice is seen after JUNOS upgrade
--- NOTICE: System is running on alternate media device (/dev/mirror/rd0s1a).
After upgrading to certain releases in JUNOS 8.5 or higher, and enabling mirror-flash-on-disk is configured under the [system] hierarchy, the following message is displayed on the CLI prompt on logging into the node:
mirror-flash-on-disk
[system]
geg@austria-re0> request routing-engine login other-routing-engine € --- JUNOS 8.5R4.3 built 2008-08-12 23:16:55 UTC --- --- NOTICE: System is running on alternate media device (/dev/mirror/rd0s1a). --- geg@austria-re1> geg@austria-re1> show configuration system mirror-flash-on-disk mirror-flash-on-disk;
rd0s1a
geg@austria-re1> show system storage Filesystem Size Used Avail Capacity Mounted on /dev/mirror/rd0s1a 885M 98M 716M 12% / devfs 1.0K 1.0K 0B 100% /dev devfs 1.0K 1.0K 0B 100% /dev/ /dev/md0 23M 23M 0B 100% /packages/mnt/jbase /dev/md1 80M 80M 0B 100% /packages/mnt/jkernel-8.5R4.3 /dev/md2 8.8M 8.8M 0B 100% /packages/mnt/jpfe-M7i-8.5R4.3 /dev/md3 3.5M 3.5M 0B 100% /packages/mnt/jdocs-8.5R4.3 /dev/md4 28M 28M 0B 100% /packages/mnt/jroute-8.5R4.3 /dev/md5 8.8M 8.8M 0B 100% /packages/mnt/jcrypto-8.5R4.3 /dev/md6 37M 37M 0B 100% /packages/mnt/jpfe-common-8.5R4.3 /dev/md7 504M 8.0K 463M 0% /tmp /dev/md8 504M 458K 463M 0% /mfs /dev/mirror/rd0s1e 98M 28K 90M 0% /config procfs 4.0K 4.0K 0B 100% /proc /dev/ad1s1f 35G 308M 32G 1% /var geg@austria-re1>
This is a cosmetic issue and does not have any other side effects than the printed notice. The issue has been introduced with the fix for PR/268474. The issue is tracked via PR/311768. Please check the below link for information in which JUNOS releases this cosmetic issue is fixed.