Mellanox MLNX-OS User Manual for SX1018HP Ethernet Managed Blade Switch

Rev 2.10
Mellanox Technologies
141
Mellanox Technologies Confidential
Step 5. Show all image files on the system. Run:
Step 6. Set the boot location to be the other partition (next). Run:
Step 7. Reload the switch. Run:
4.3.3.3 Switching to Partition with Older Software Version
The system saves a backup configuration file when up
grading from an older software version to a
newer one. If the system returns to the older software partition, it uses this backup configuration
file. Note that all configuration changes done with the new software are lost when returning to
the older software version.
There are 2 instances where the backup configuration file does
not exist:
• The user has run “reset factory”
command, which clears all configuration files in the
system
• The user has run “configuration switch-to” to a confi
guration file with different name
then the backup file
Also note that the configuration file
becomes empty if the switch is downgraded to a software
version which has never been installed yet.
To allow switching partition to the older software version, in these cases above, follow the steps
be
low:
switch (config) # show images
Images available to be installed:
new_image.img
<downgrade version> 2010-09-19 16:52:50
Installed images:
Partition 1:
<current version> 2010-09-19 03:46:25
Partition 2:
<downgrade version> 2010-09-19 16:52:50
Last boot partition: 1
Next boot partition: 2
No boot manager password is set.
switch (config) #
switch (config) # image boot next
There are two installed images on the system. Therefore, if one of the images gets cor-
rupted (due to power interruption, for example), in the next reboot the image will go up
from the second partition.
In case you are downloading to an older software version which has never been run yet
on the switch, use the following command sequence as well:
switch (config) # no boot next fallback-reboot enable
switch (config) # configuration write
switch (config) # reload