Bug 969648

Same problem here. I solved this by replacing this entry in my /etc/fstab:

UUID=6b694b71-bc0d-4290-a3cf-2c561a281ab1      /       ext4    relatime,journal_async_commit,delalloc,auto_da_alloc,discard,data=writeback 1 1

with this simple one:

/dev/sda1  /    ext4    defaults        1 1

I don't know if it was because of the UUID instead of the device or the excessive options, though.

If this doesn't help, you could try to hack your /usr/lib/systemd/upgrade-prep.sh by insert a "mount -o remount,rw /" before the  line running new-kernel-pkg, this is really ugly though.

I can confirm the same issue, although I have UEFI disabled.

Fedup from 17 to 18 = worked fine

To update to 19 I had to change my /etc/fstab from:

/dev/mapper/vg_bullet-lv_root /                       ext4    defaults,discard,noatime,nodiratime,barrier=0,data=writeback        1 1

to:

/dev/mapper/vg_bullet-lv_root /                       ext4    defaults 1 1

x86_64 Same here. I had:

UUID=.....      /        ext4    noatime,data=writeback,acl,user_xattr  1 1

..and changing to.. 

/dev/sda3   /   ext4     defaults     1 1

..fixed it.

The issue is data=writeback, the rest of the options work fine.

It's also the only option you all have in common.

What happens if you add "data=writeback" back to your fstab after the upgrade? Does your root device end up being read-only again?

data=writeback in the fstab causes problems in F19, with root being left mounted read only.

The error is because ext4 refuses to remount with different 'data' mount option. So something is mounting it without the data option in F19. This can be verified by looking at the /proc/mounts listing.


This is as I understand it not a new thing with ext4 (google finds errors going back several years). No idea why it worked in F18, maybe the fstab entry is used somewhere else (initramfs?) or maybe F18 had some kernel patch to allow it. I did not have any mount options listed in my grub.cfg kernel command line.

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