On Tue, Mar 08, 2011 at 11:44:36PM +0800, Shawn Guo wrote: > On 8 March 2011 18:52, Loïc Minier <loic.min...@linaro.org> wrote: > > On Tue, Mar 08, 2011, Shawn Guo wrote: > >> Have a look at the /dev/sdb change in device report before and after > >> the command you suggest ... > > > > Interesting :-) > > > > But the linaro-media-create "size" output is probably broken for the > > same reason: sdb appears to be unavailable for some time after changing > > the partition table: > > > >> Are you 100% sure, on selecting [/dev/sdb] (y/n)? n > >> r65073@S2101-09:~/image/linaro$ sudo parted -s /dev/sdb mklabel msdos && > >> sudo sfdisk -L /dev/sdb > >> /dev/sdb: No medium found > >> > >> sfdisk: cannot open /dev/sdb read-write > > > > That's pretty convincing to me; anything relevant in dmesg? > > > > We could do something like the attached shell script; would you mind > > running it to confirm this works without removing/reinserting the MMC? > > I'm curious to see how much time your drive needs to come back. > > I'm scanning all 7 cards I have with the script wait_device, each card > with 10 iterations of the test. > > 1) Transend 4GB SD > 2) SanDisk 2GB SD > 3) KingMax MMC Mobile 2GB > > All above 3 cards passed the test with giving "Could list partitions > after 0 seconds!" > > 4) SanDisk 4GB SD > 5) SanDisk 4GB SD > 6) SanDisk 4GB SD > 7) SanDisk 4GB SD > > All above 4 cards failed with giving "Giving up after 30 seconds > failing to list partitions". The interesting thing is it does not > always fail from the beginning. Some cards can even pass the test for > 4~5 iterations, and then start failing. If it starts failing, it > always fails until I remove the card and replug it. > > Here are two more tests I will do. > > * With adding two sleep(5) in partitions.py that Zygmunt suggests, I > will run l-m-c on the failing card to see if it can get through.
As I replied Zygmunt in another message, it still fails at 'mkimage: Write error ...'. > * With the original l-m-c installation, I will run l-m-c on one of > card 1) ~ 3), probably 1) to see how l-m-c goes with the card passed > wait_device. It works good on card #1, and system boots on mx51evk board. I also did the third test below suggested by Zygmunt and David on IRC. * Create image_file and dd it to failing card I did it on the failing card I used to report the issue originally, and it works no problem, and system boots on mx51evk board. -- Regards, Shawn _______________________________________________ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
