Boot from SSD - Outdated description?

[marcerlser]

@adminX

My real bootcmd is

bootcmd=i2c dev 1; i2c read 0x2a 0x9 1 0x00FFFFF0; setexpr.b rescue *0x00FFFFF0 ; if test $rescue -ge 1 ; then setexpr rescue $rescue - 1 ; if test $rescue -ge 1 ; then echo BOOT RESCUE ; run rescueboot ; else echo BOOT eMMC FS ; run mmcboot ; fi ; else echo BOOT SSD FS ; run ssdboot ; fi

It supports mmcboot as first rescue mode with all other rescue modes shifted upwards. I didn’t publish it back then as i was concerned someone will forget it and wonder why rescue modes not work like they should.

Does this mean there will be now 5 resue modes instead of 4? And rescue mode ‘1’ is boot to emmc, ‘2’ is reboot, etc.?

Does this command need any special setup if I already can switch between ssd & emmc with the fw_printenv stuff?

PS: I do have an old TO (so pre-2019), do this instructions apply to this hardware version?

[adminX]

@marcerlser

Does this mean there will be now 5 resue modes instead of 4? And rescue mode ‘1’ is boot to emmc, ‘2’ is reboot, etc.?

Yes, my bootcmd shifts all rescue modes and allows to boot the plain eMMC system as “rescue mode”.

@marcerlser

Does this command need any special setup if I already can switch between ssd & emmc with the fw_printenv stuff?

fw_* has the better support if there is the correct version of rescue in the flash. It should have a working rollback on the SSD. Mine does not as this was simply not needed.

@marcerlser

PS: I do have an old TO (so pre-2019), do this instructions apply to this hardware version?

The doc as it is right now only applies to the old hardware versions but not to the newer ones.

@drhm

@adminX

I just got a working rescue image done and it supports SATA and MMC but required some hacks and a small patch. I may put them untested in the bug tracker but i am not sure. I am just in a really really bad mood and totally upset by OpenWRT.

Found a bit of time and used a debian container to get it to compile. It works and the patches are sent.

[kixorz]

I’m printing and framing this great post!

[drhm]

Thank you, I am glad.

[lucenera]

It works perfectly here. If someone knows how to pass mount options for the boot disk, I can enable compress=ztds. It would be a shame not to.