A quick heads up -- we've seen Jon Nettleton hit some disk corruption repeatedly on his development/test machine. Diagnosis of the prob led us to http://dev.laptop.org/ticket/11210 (erase-blocks doesn't work with Toshiba eMMC devices - which is what we have on SKU 198 - membrane kb units) but it is unclear whether that is the issue.
This is one of our current risks -- it is a concern because we need to know real soon whether this is a hw issue (related to the eMMC parts) or not. We have hit corruption issues with ext4 in the past (#9513) and fell back to ext3. It is not clear however that ext4 is suspect: the whole 11.2.0 dev cycle was done under ext4 and no disk corruption incidents were reported AFAIK. >From IRC discussion -- he seemed to hit it while: - developing, compiling, - using an ext SD card - running a patched kernel and xorg - presumably crashing a lot We need to consider action around this - try to force the error -- I'll set up a test rig for this, applying unclean shutdowns on a couple of SKU198 units - keep our eyes open for disk corruption reports, specially in builds including the new gfx code - potentially switch back to ext3 in OOB It is very hard to prove a negative - tracking this at http://dev.laptop.org/ticket/11220 cheers, m -- [email protected] -- Software Architect - OLPC - ask interesting questions - don't get distracted with shiny stuff - working code first - http://wiki.laptop.org/go/User:Martinlanghoff _______________________________________________ Devel mailing list [email protected] http://lists.laptop.org/listinfo/devel
