[fedora-arm] cloned sd card is not booting

[Niels de Vos]

On Mon, Aug 04, 2014 at 01:49:03PM -0400, Robert Moskowitz wrote:
> I am getting far enough into my system build that I don't want to go
> back to square one everytime I mess up.  So I decided I SHOULD be
> able to clone my boot drive with:
> 
> sudo dd if=/dev/sdb of=/dev/sdc bs=4096 conv=notrunc,noerror; sync
> 
> And I did check that my working card is in sdb and the target is
> sdc.  Note that the target drive has been used for prior testing.
> 
> But this cloned card fails to boot, so there is something wrong with
> the above command.  Here is the end of what I am seeing on the
> console in the boot:
> 
...
> [   13.911063] systemd-fsck[368]: _/: The filesystem size (according
> to the superblock) is 3587707 blocks
> [  OK  ] Started dracut pre-mount hook.
> [   13.919598] systemd-fsck[368]: The physical size of the device is
> 3548795 blocks
> [   13.937109] systemd-fsck[368]: Either the superblock or the
> partition table is likely to be corrupt!
...
> [   14.571964] EXT4-fs (mmcblk0p3): bad geometry: block count
> 3587707 exceeds size of device (3548795 blocks)
> [FAILED] Failed to mount /sysroot.

During boot, is is detected that the size of the filesystem (stored in 
the filesystems meta-data) is larger than the partition where it is 
located. This suggests that the 'clone' is written to a smaller sd-card 
than the original.

You might be able to 'fix' your working card, by resizing the filesystem 
of the 3rd partition. In the system where you do the 'dd', the partition 
would be '/dev/sdb3' and the commands you can use are 'resize2fs' or 
'parted'.

Good luck,
Niels


> See 'systemctl status sysroot.mount' for details.
> [DEPEND] Dependency failed for Initrd Root File System.
> [DEPEND] Dependency failed for Reload Configuration from the Real Root.
> [  OK  ] Stopped dracut pre-pivot and cleanup hook.
> [  OK  ] Stopped target Initrd Default Target.
> [  OK  ] Stopped dracut mount hook.
> [  OK  ] Reached target Initrd File Systems.
> [  OK  ] Stopped target Basic System.
> [  OK  ] Stopped target System Initialization.
>          Starting Emergency Shel
> Generating "/run/initramfs/rdsosreport.txt"
> 
> 
> Entering emergency mode. Exit the shell to continue.
> Type "journalctl" to view system logs.
> You might want to save "/run/initramfs/rdsosreport.txt" to a USB
> stick or /boot
> after mounting them and attach it to a bug report.
> 
> 
> :/# [   17.458499] systemd-udevd (321) used greatest stack depth:
> 5248 bytes left
> [   17.497871] systemd-udevd (320) used greatest stack depth: 5020
> bytes left
> 
> ============================================
> 
> I see these stack messages regularly even when things are working.
> 
> I hope someone can help me with the cloning, as it will really
> simplify my testing.
> 
> thanks
> 
> 
> 
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