[LEDE-DEV] Recent issues w/ sysupgrade

[Ryan Mounce]

On 31 August 2017 at 04:11, Philip Prindeville
<philipp_subx at redfish-solutions.com> wrote:
> Looking a little further into the console logging, what I’m seeing after a “dd” directly onto the flash is this:
>
> Press the [f] key and hit [enter] to enter failsafe mode
> Press the [1], [2], [3] or [4] key and hit [enter] to select the debug level
> [    6.299598] mount_root: loading kmods from internal overlay
> [    6.307977] kmodloader: loading kernel modules from //etc/modules-boot.d/*
> [    6.316014] kmodloader: done loading kernel modules from //etc/modules-boot.d/*
> [    6.459868] block: attempting to load /etc/config/fstab
> [    6.472689] block: extroot: not configured
> [    6.488330] mount_root: rootdisk overlay filesystem has not been formatted yet
> [    6.517993] blk_update_request: I/O error, dev loop0, sector 0
> [    6.724898] block: attempting to load /etc/config/fstab
> [    6.730248] block: extroot: not configured
> [    6.734560] mount_root: overlay filesystem has not been fully initialized yet
> [    6.741823] mount_root: switching to f2fs overlay
>
>
> if I take the exact same image and try to reinstall it with sysupgrade, I see this:
>
>
> Press the [f] key and hit [enter] to enter failsafe mode
> Press the [1], [2], [3] or [4] key and hit [enter] to select the debug level
> [    5.319594] mount_root: loading kmods from internal overlay
> [    5.328062] kmodloader: loading kernel modules from //etc/modules-boot.d/*
> [    5.336078] kmodloader: done loading kernel modules from //etc/modules-boot.d/*
> [    5.480712] block: attempting to load /etc/config/fstab
> [    5.493487] block: extroot: not configured
> [    5.498237] random: procd: uninitialized urandom read (4 bytes read)
> [    5.515173] mount_root: rootdisk overlay filesystem has not been formatted yet
>
>
> it’s tough to reproduce, which makes me wonder if it’s either a race condition or an uninitialized variable.

I can consistently reproduce this issue when testing my Turris Omnia
patch set, hopefully I can help to narrow it down.

A couple of times interrupting boot into failsafe and then running
mount_root has fixed things, however more often than not mount_root
hangs in the same way.

This appears to have been introduced in the last couple of months so I
will try to bisect it.

>
> This was after I rebased to:
>
> 2f0a855 lantiq: ACMP252: clean up device modules
>
> What would be significantly different about dd’ing an image onto the CF versus the copy that sysupgrade performs?
>
> -Philip
>
>
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