Nexus 5548UP Downgrade from 5.1.3.N1.1 to 5.0.3.N2.2b fails -- SRG file not present/cannot be opened

[catbrownhd]

I am attempting to downgrade from 5.1.3.N1.1 to 5.0.3.N2.2b for standards compliance.

When following the ISSU steps for validation of the install all command I receive the following error on the following command:

sh install all impact kickstart bootflash:n5000-uk9-kickstart.5.0.3.N2.2b.bin system bootflash:n5000-uk9.5.0.3.N2.2b.bin

Verifying image bootflash:/n5000-uk9-kickstart.5.0.3.N2.2b.bin for boot variable "kickstart".

[####################] 100% -- SUCCESS

Verifying image bootflash:/n5000-uk9.5.0.3.N2.2b.bin for boot variable "system".

[####################] 100% -- SUCCESS

Verifying image type.

[####################] 100% -- SUCCESS

Extracting "system" version from image bootflash:/n5000-uk9.5.0.3.N2.2b.bin.

[#                   ]   0% -- FAIL. Return code 0x404F0003 (SRG file not present/cannot be opened).

I followed some recommendations from this post https://supportforums.cisco.com/thread/2108814

• reload to clear temp and cache
• show system internal flash
• checked md5sum of image

I found this information http://www.cisco.com/en/US/docs/switches/datacenter/nexus5000/sw/deferral/Deferral_Advisory_Notice_N5K.html

I am unsure of how to upgrade when the steps to validate indicate a problem with the upgrade/downgrade.

I still receive the error.

Any help would be greatly appreciated.

Attached are the steps done so far and outputs.

[catbrownhd]

Update: I am able to downgrade to 5.0.3.N1.1b with no issues.

This appears to be an issue with going from N1 to N2.

Can any elloborate on this?

[Oleksandr Nesterov]

Hello Heath

Please open a TAC case to work on this - there may be many reasons for such behavior.

Also  as Krun proposed - you can set boot variables manually, then reload the  switch. And after that do not forget to run "install all" command to  ensure that everything has downgraded properly.

HTH,

Alex

[krun_shah]

You can set boot variable manually and reload switch

Sent from Cisco Technical Support iPhone App

[vdsudame]

can you please send us output of following

show system internal flash
  show system internal dir /var/tmp

also we dont recommend to change boot variables and reload. 
This might cause some other problems after you downgrade.
We would rather fix the problem first and then downgrade 
using install all. 

Vinayak

Cisco TAC

[catbrownhd]

I had already created a case with our reseller.  The engineer there had me reload the 5ks and attempt the show install all impact again.  When I did it was successful.

I was able to then downgrade to 5.0.3.N2.2b.  I am currently working to duplicate the issue by going back to 5.1.3.N1.1.

The engineer also stated that I was probably running into this bug:

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsw25835

Here is the contents of the sh system internal flash and show system internal dir /var/tmp:

Mount-on                  1K-blocks      Used   Available   Use%  Filesystem

/                            409600     72564      337036     18   /dev/root

/proc                             0         0           0      0   proc

/post                          2048         4        2044      1   none

/var                         409600     72564      337036     18   none

/sys                              0         0           0      0   none

/isan                       1536000    409628     1126372     27   none

/var/tmp                     307200        72      307128      1   none

/var/sysmgr                 1024000         0     1024000      0   none

/var/sysmgr/ftp              409600        68      409532      1   none

/var/sysmgr/ftp/cores        102400         0      102400      0   none

/callhome                     61440         0       61440      0   none

/dev/shm                     524288    126552      397736     25   none

/volatile                    153600         0      153600      0   none

/debug                        20480         0       20480      0   none

/dev/mqueue                       0         0           0      0   none

/debugfs                          0         0           0      0   nodev

/mnt/plog                     49024      1300       47724      3   /dev/mtdblock2

/mnt/cfg/0                   114909      4274      104702      4   /dev/sda5

/mnt/cfg/1                   112920      4274      102816      4   /dev/sda6

/var/sysmgr/startup-cfg      409600      2104      407496      1   none

/dev/pts                          0         0           0      0   devpts

/mnt/pss                     114917      5923      103060      6   /dev/sda4

/bootflash                  1609984    779460      748740     52   /dev/sda3

                                                                ./         640

                                                               ../         240

                                                   bootloader_ver            0

                                           util_cli_history_admin           48

                                                            mysrg         1664

                                                    mcm_ascii.log         1019

                                                 m2rib_ascii.3248           68

                                                           arping          101

                                                        stp.log.1         3836

                                                         fwm1.out            0

                                                    cmp_slot_id.1            0

                                                           ntpd_1            0

                                                     ntp_client_1            0

                                                 ntp__libdapi.log            0

                                                 igmp_restart.log            0

                                                 radius_debug.log          232

                                                      cfs_mac.log          166

                                                       climib.log         1416

                                                          lcc.log          694

                                                  security_stderr           77

                                                  security_stdout            0

                                                    aaa_debug.log          519

                                               security_debug.log          647

                                                        evmc.3005           31

                                                       idehsd.log          602

                                                        mvsh.3000            0

                                                        lockcisco            0

                                                          .flexlm/          60

                                                             logs@          20

                                                  first_setup.log         2981

                                                  boot_uptime.log           56

                                                              vsh/          40

[vdsudame]

I am assuming this output you sent me is after the reload ? Did you collect this before the reload? Also that bug is not really a bug, it just documents the condition for which we see the problem. ie if the files in one of the directories are full then it impacts the upgrade/downgrade. The action plan would be to get with Cisco TAC, load a dplug and clean out the files for the concerned directories via dplug. Not sure if this was done. But a reboot will also clean out the files hence you did not see the issue after reload.

V.