Hi Jon, On Mon, Jan 31, 2011 at 10:15:10, Jon Povey wrote: > Gilles Chanteperdrix wrote: > > Jon Povey wrote: > >> I am seeing rare SD card write corruption on DM355 running 2.6.36. > >> The system will get itself into a state where it appears all SD > >> writes are offset by two bytes. This is using a vfat filesystem on > >> the SD, and affects the FAT and directories at least. > > > > we observe something similar with the 2.6.32 kernel. In our case, it > > happens almost systematically if we remove the SD card while > > a transfer is occuring. > > Thanks for the report. That sounds like what we are seeing. > I suspect some kind of incomplete DMA or controller state clearing > on surprise removal.
It will also be useful to see if using journalling filesystems like ext3 or ext4 helps the situation. Thanks, Sekhar > > Will see if I can debug it and post a patch if I work it out. > > -- > Jon Povey > [email protected] > > Racelogic is a limited company registered in England. Registered number > 2743719 . > Registered Office Unit 10, Swan Business Centre, Osier Way, Buckingham, > Bucks, MK18 1TB . > > The information contained in this electronic mail transmission is intended by > Racelogic Ltd for the use of the named individual or entity to which it is > directed and may contain information that is confidential or privileged. If > you have received this electronic mail transmission in error, please delete > it from your system without copying or forwarding it, and notify the sender > of the error by reply email so that the sender's address records can be > corrected. The views expressed by the sender of this communication do not > necessarily represent those of Racelogic Ltd. Please note that Racelogic > reserves the right to monitor e-mail communications passing through its > network > > > _______________________________________________ > Davinci-linux-open-source mailing list > [email protected] > http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source > _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
