Gopi Desaboyina Solaris Blogs

Just another weblog

Mounting root on rpool/ROOT/<BE NAME> with filesystem type zfs is not supported

root device: disk1:a  File and args:
SunOS Release 5.10 Version Generic_144488-17 64-bit
Copyright (c) 1983, 2011, Oracle and/or its affiliates. All rights reserved.
SC Alert: Failed to send email alert for recent event.
Mounting root on rpool/ROOT/20110809 with filesystem type zfs is not supported

panic[cpu0]/thread=180e000: vfs_mountroot: cannot remount root

000000000180b950 genunix:vfs_mountroot+398 (60031d00080, 18ea700, 190e150, 1934800, 193cc00, 18e5470)
  %l0-3: 0000060031d00080 000000000129a800 00000000018e4f28 0000060031d00080
  %l4-7: 000000000190e150 0000000000002420 0000000000000420 0000000000002000
000000000180ba10 genunix:main+100 (183fa20, 183f800, 1888740, 10b5800, 0, 1)
  %l0-3: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
  %l4-7: 0000000000000000 0000000000000000 0000000000000000 0000000000000000

syncing file systems… done
skipping system dump – no dump device configured

SC Alert: Host System has Reset

Normally this problem happens when /etc/system has svm root dev & vfstab has entries for root with md. it supposed to have rpool entries.
1. Boot from Alternative/CD. import the rpool & mount it on /a
2. vi /a/etc/system and make sure you don’t have any SVM md as root dev. rootdev:xxxxxxx . Delete this line
3. check /a/etc/vfstab and make necessary changes to reflect the correct device.


August 29, 2011 - Posted by | Solaris


  1. You have saved me twice in 1 week.
    I thank you

    Comment by Rick Watson | December 1, 2011 | Reply

    • Glad that my blog was helpful Rick

      Comment by Gopi | December 4, 2011 | Reply

  2. Hi,
    You put your link as a comment to my blog
    I think your explanation is very plausible however in my case the server was a SunFire 280R. Could a SunFire 280R ever boot from a ZFS fliesystem?
    I would expect Live Update to get the system file right. I certainly didn’t edit it by hand. It’s too late now anyway, I won’t be revisiting that server.
    It looks like you have a good Blog here, all the best with it.

    Comment by ontapunshelled | November 7, 2012 | Reply

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s

%d bloggers like this: