On 23/10/2019 11:44, Chris Elvidge wrote:
....
> Try redoing your rsync from /dev/mmcblk0p2 (root partition) to /dev/sda3
> (new root partition) with -avx (x = don't cross filesystem boundaries;
> this will ignore things like /boot, /proc, /dev)
> I.e mount /dev/sda3 on (e.g.) /mnt
> Then "rsync -avx / /mnt/" (as root)
>
> My cmdline.txt now looks like (note this is all one line and I use btrfs
> on the new root partition):
> # cat /boot/cmdline.txt
> dwc_otg.lpm_enable=0 console=serial0,115200 console=tty1
> root=PARTUUID=5cf6b9c2-9894-cd47-933e-ad3840ae4e5c rootfstype=btrfs
> elevator=deadline fsck.repair=yes rootwait quiet splash
> plymouth.ignore-serial-consoles net.ifnames=0 biosdevname=0
> usbhid.mousepoll=0
>
> Don't change the original /etc/fstab file (the one on /dev/mmcblk0p2).
>
> This is on a RPi3+, boot on /dev/mmcblk0p1, root on /dev/sda2
>

Thanks for the comments (and to druck).

I've used rsync -n to cross-check the two root partitions - apart from
inconsequential stuff (/tmp, cups) they're the same.

Keeping the original (card) fstab file the same makes no difference.

I don't know if it makes a difference, but I /think/ this is a plain
pi3B. Other partitions are fine on the HD, but the only way I can make
this go is by having root on the SD card.

I'm beginning to wonder if there might be something odd about the USB
connection: I'm using a spare sata drive in a usb adapter. It works ok
on ubuntu and freebsd desktop machines though. I don't have another
spare to try.




--
Mike Scott
Harlow, England

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