On Sun, Jun 24, 2012 at 1:17 PM, Mitch Harder <[email protected]> wrote: > I haven't figured out why I'm the only one running into issues, but > here is some follow-up... > > Obviously, there must be some hardware differences between the two > boxes I can replicate with and everyone else. > > But now, I'm also suspicious of a kernel issue. > > I de-archived the initramfs for my working Sabayon-Daily-Xfce-20120527 > and the initramfs for S9-Xfce-final in order to explore for > differences. > > I found the busybox mount command always locks up (in both initramfs > versions) when I try to mount an extended partition in my custom 3.4.3 > kernel. > > In fact, it locks up so hard I can't kill the mount command even with > 'kill -s 9 <pid>', and I have to hard reset my computer instead of > being able to shut down normally. > > However, the Sabayon-Daily-Xfce-20120527 has a 3.3 kernel. If I > manually run the same busybox mount command when booted with the > Sabayon 3.3 kernel, I successfully got an error returned (which is > what's expected). > > Here are some (boring) details of how I went about my testing. > > Step One: Mount the iso image for the working S9-pre-daily and > S9-final, and copy each sabayon.igz initramfs to a separate working > directory. > > Step Two: Extract the initramfs contents > zcat sabayon.igz | (while true; do cpio -i -d -H newc > --no-absolute-filenames || exit; done) > > Step Three: > Attempt to mount /dev/sda4 (the extended partition that is giving > issues on my sytsem) with the busybox in each version as per the mount > command in the init scripts. > > The init scripts mount with something similar to: > <initramfs>/bin/mount -r -t udf /dev/sda4 /mnt/temp > > Where <initramfs>/bin/mount is actually a link to > <initramfs>/bin/busybox (busybox knows what command to run based on > the name of the static link used to start it). > > Summary of Results: > > If I run the busybox mount command booted with a 3.3 kernel, I get: > > # s9pre-xfce/bin/mount -r -t udf /dev/sda4 /mnt/temp/ > mount: mounting /dev/sda4 on /mnt/sabayon-btrfs-source/ failed: Invalid > argument > > If I run the same busybox mount command from my 3.4.3 kernel, it just > locks up, and one of my processors spins up to 100% trying to mount. > The busybox mount command can't be killed at this point.
Some further minor follow-up. If I even use the regular mount command, I get a polite failure on a 3.3 kernel, but lock up on my 3.4.3 kernel. I see a similar report on the SystemRescueCd Forums: http://www.sysresccd.org/forums/viewtopic.php?f=13&t=4511
