Bug 1290566 - Failed to mount /sysroot: mount: unknown filesystem type 'nfs'
Failed to mount /sysroot: mount: unknown filesystem type 'nfs'
Product: Fedora
Classification: Fedora
Component: dracut (Show other bugs)
Unspecified Unspecified
unspecified Severity unspecified
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Assigned To: dracut-maint-list
Fedora Extras Quality Assurance
Depends On:
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Reported: 2015-12-10 14:56 EST by Gregory Lee Bartholomew
Modified: 2016-12-20 11:54 EST (History)
4 users (show)

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Doc Type: Bug Fix
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Last Closed: 2016-12-20 11:54:10 EST
Type: Bug
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Description Gregory Lee Bartholomew 2015-12-10 14:56:33 EST
Description of problem:

After upgrade to Fedora 23, NBD root fails to mount.

In dracut shell, "systemctl status sysroot.mount" shows that the NBD parameters are being passed to /usr/bin/mount instead of the NBD devnode. i.e.,


/usr/bin/mount nbd:server.domain:nbd-export-name:ext4:noatime:-persist /sysroot -o ro

should be this:

/usr/bin/mount /dev/nbd0 /sysroot -o ro

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. Upgrade Fedora 22 to Fedora 23 using dnf system-upgrade on an NBD-mounted root.

Actual results:

"Failed to mount /sysroot" after reboot immediately following system-upgrade

Expected results:

Successful mount of /sysroot

Additional info:

Appears very similar to bug:

Comment 1 Harald Hoyer 2015-12-14 05:42:55 EST
yeah, systemd changed.

what you can do, until it's fixed:

root=LABEL=<myrootlabel> or root=UUID=<myuuid> or root=/dev/nbd0


Comment 2 Fedora End Of Life 2016-11-24 09:08:46 EST
This message is a reminder that Fedora 23 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 23. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
this bug will be closed as EOL if it remains open with a Fedora  'version'
of '23'.

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to a later Fedora version.

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able to fix it before Fedora 23 is end of life. If you would still like 
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of Fedora, you are encouraged  change the 'version' to a later Fedora 
version prior this bug is closed as described in the policy above.

Although we aim to fix as many bugs as possible during every release's 
lifetime, sometimes those efforts are overtaken by events. Often a 
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Comment 3 Fedora End Of Life 2016-12-20 11:54:10 EST
Fedora 23 changed to end-of-life (EOL) status on 2016-12-20. Fedora 23 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.

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