[Arm-dev] Kernel upgrade experience [That was exciting! :-/]

El 31/5/18 a las 12:25, Ian Pilcher escribió:
> I just did my first 7.5 kernel upgrade, and I'm happy to report that the
> system came right up into the new kernel (the first time that it's ever
> done so without manual edits to extlinux.conf).
>
There used to be a script (updateboot), but we obsoleted that one for 7.5
> In fact, I was a bit surprised that it booted the *new* kernel.  Here is
> my extlinux.conf:
>
>  # extlinux.conf generated by appliance-creator
>  ui menu.c32
>  menu autoboot Welcome to 
> CentOS-Userland-7-armv7hl-generic-Minimal-1804. Automatic boot in # 
> second{,s}. Press a key for options.
>  menu title CentOS-Userland-7-armv7hl-generic-Minimal-1804 Boot Options.
>  menu hidden
>  timeout 20
>  totaltimeout 600
>
>  default=CentOS-Userland-7-armv7hl-generic-Minimal-1804 
> (4.14.28-201.el7.centos.armv7hl)
>  label CentOS Linux (4.14.43-201.el7.armv7hl) 7 (Core)
>          kernel /vmlinuz-4.14.43-201.el7.armv7hl
>          append ro root=UUID=eb2c92c6-69cd-4a87-982d-900be79e928e 
> LANG=en_US.UTF-8
>          fdtdir /dtb-4.14.43-201.el7.armv7hl
>          initrd /initramfs-4.14.43-201.el7.armv7hl.img
>
>  label CentOS-Userland-7-armv7hl-generic-Minimal-1804 
> (4.14.28-201.el7.centos.armv7hl)
>          kernel /vmlinuz-4.14.28-201.el7.centos.armv7hl
>          append ro root=UUID=eb2c92c6-69cd-4a87-982d-900be79e928e
>          fdtdir /dtb-4.14.28-201.el7.centos.armv7hl
>          initrd /initramfs-4.14.28-201.el7.centos.armv7hl.img
>
> Based on the "default=..." line, I expected it to boot
> 4.14.28-201.el7.centos.armv7hl.  Instead it booted into
> 4.14.43-201.el7.armv7hl.
Well, that part is simple, default=... is ignored by uboot (if you look 
while booting, you'll see Ignoring unknown command: default=centos)
>
> So something still seems just a bit off.
>
Agreed, either that line should be deleted, or up to date.

Thanks.
Pablo.