Bug 1012371 - Cannot set root device on kernel command line
Cannot set root device on kernel command line
Product: Fedora
Classification: Fedora
Component: dracut (Show other bugs)
Unspecified Unspecified
unspecified Severity unspecified
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Assigned To: dracut-maint
Fedora Extras Quality Assurance
Depends On:
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Reported: 2013-09-26 07:14 EDT by David Woodhouse
Modified: 2015-02-17 12:21 EST (History)
3 users (show)

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Doc Type: Bug Fix
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Last Closed: 2015-02-17 12:21:36 EST
Type: Bug
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Description David Woodhouse 2013-09-26 07:14:26 EDT
My hard drive died. I did a full restore to a different drive.

The UUID of my root file system is now different, so mount-by-UUID fails. Not a problem; I'll just edit the command line in grub, and change the existing 'root=UUID=...' on the command line to 'root=/dev/sda7'.

Would be nice if the initrd actually *honoured* this, instead of still finding that original UUID somewhere and trying to mount that.

I eventually resorted to *changing* the file system's UUID to match the old one, because I couldn't work out how to make it mount the *right* file system and continue. I really shouldn't have had to do that.
Comment 1 Kay Sievers 2013-09-26 09:03:33 EDT
Isn't that just caused by the entry in /etc/fstab; the file on the rootfs not
inside dracut?

I personally just have:
  ROOT / auto defaults                               0 0
there, because the actual device field is not needed at all, and ignored if it
does not start with /.

Dracut, or the kernel, has mounted the device already, so the duplicated
entry seems pointless, and might just be the cause of your problem.

If that is the reason, anaconda should probably stop doing that.
Comment 2 Harald Hoyer 2013-10-14 04:30:23 EDT

Boot speed is improved by removing unused features from the initramfs. If new hardware is added, boot into the rescue initramfs and use the command dracut --regenerate-all --force to rebuild and replace the old initramfs.
Comment 3 Fedora End Of Life 2015-01-09 14:59:19 EST
This message is a notice that Fedora 19 is now at end of life. Fedora 
has stopped maintaining and issuing updates for Fedora 19. It is 
Fedora's policy to close all bug reports from releases that are no 
longer maintained. Approximately 4 (four) weeks from now this bug will
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Comment 4 Fedora End Of Life 2015-02-17 12:21:36 EST
Fedora 19 changed to end-of-life (EOL) status on 2015-01-06. Fedora 19 is
no longer maintained, which means that it will not receive any further
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