On 19 October 2015 at 17:22, Richard Weinberger richard@nod.at wrote:
Am 19.10.2015 um 15:47 schrieb Ezequiel Garcia:
After some further investigation, printing the counters as Richard suggested I found it was a bug on my side :-( The Linux partition and the U-Boot partition had different size (i.e. PEB count) and so Fastmap complained :-(
We trimmed the Linux partition size, and forgot to change U-Boot's (or thought it wouldn't matter).
Sorry for the noise guys!
Good to know. :)
Let me find a way to detect and report this kind of user error better. The WARN_ON() is only meant for bad internal errors.
Sure. In case it's not clear, let me clarify what the issue was: the MTD partition has one size in Linux (4072 EB) and another size in U-Boot (4076 EB).
When the map was built by Linux's Fastmap, it contained a number of PEBs that conflicted with the number of PEBs U-Boot's Fastmap code was expecting (becase Linux EB != U-Boot EB).
Not sure how you would detect such a mismatch, but it was a very good idea to print a noisy warning :-)
We were effectively running without fastmap so far, becasue neither U-Boot nor Linux could find a proper fastmap and attach the UBI partition using it.
Hope it's clear.