[j-nsp] Software Upgrade failures on EX4200

Kamal Dissanayaka kamalasiri at gmail.com
Wed Sep 27 01:56:17 EDT 2017

Hi Experts

Has anyone experience if error "*g_vfs_done():da1[READ(offset=4194304,
length=16384)]error = 6" *when upgrading EX4200 switches? The switch will
not boot after reboot though it suggest to reboot. We can manually boot it
through console and the see the partition that was backup before upgrade is

The issue with this is remote upgrades. Remote upgrades fails randomly and
some has to visit the sit to fix it. Is there any way fix it ?

1.  Upgrade

root> request system software add

umass1: at uhub0 port 1 (addr 3) disconnected

(da1:umass-sim1:1:0:0): lost device

umass1: detached

Checking pending install on fpc0

Validating on fpc0

Done with validate of
</var/tmp/jinstall-ex-4200-15.1R2.9-domestic-signed.tgz> on VC members


Verify the signature of the new package

*g_vfs_done():da1[READ(offset=4194304, length=16384)]error = 6*

Verified jinstall-ex-4200-15.1R2.9-domestic.tgz signed by
PackageProductionRSA_2015 method RSA2048+SHA1

WARNING: A reboot is required to install the software

WARNING:     Use the 'request system reboot' command immediately


2. Upgrade finally fail and stop at


tunefs: soft updates remains unchanged as enabled

[: -eq: unexpected operator

Installing disk0s3d:/jinstall-ex-4200-15.1R2.9-domestic-signed.tgz

gzip: stdin: invalid compressed data--format violated

tar: Unexpected EOF in archive

tar: Unexpected EOF in archive

tar: Error is not recoverable: exiting now

*** The installer exited with status 2 ***

*** The installation is unsuccessful!!! ***

A shell has been started. type exit<cr> to reboot:


3. when you exit it will boot with old image, and

> show system storage partitions



Boot Media: internal (da0)

Active Partition: da0s2a

Backup Partition: da0s1a

Currently booted from: active (da0s2a)

Partitions information:

  Partition  Size   Mountpoint

  s1a        183M   altroot

  s2a        184M   /

  s3d        369M   /var/tmp

  s3e        123M   /var

  s4d        62M    /config




root> show system snapshot media internal



error: /dev/da0s1a is not a JUNOS snapshot


root> show system snapshot



error: external media missing or invalid

Thank you


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