On Wed, Jan 04, 2017 at 11:32:42AM +0530, Chandan Rajendra wrote: > On Wednesday, January 04, 2017 04:18:08 PM Anton Blanchard wrote: > > I'm consistently seeing ext4 filesystem corruption using a mainline > > kernel. It doesn't take much to trigger it - download a ppc64le Ubuntu > > cloud image, boot it in KVM and run: > > > > sudo apt-get update > > sudo apt-get dist-upgrade > > sudo reboot > > > > And it never makes it back up, dying with rather severe filesystem > > corruption. > > The patch at https://patchwork.kernel.org/patch/9488235/ should fix the > bug. It looks like this patch is already queued up on the "for-linus" branch on the linux-block.git tree. Chandra, thanks for pointing this out! I had missed your e-mail from Christmas day, and it was on my todo list to figure out why I was seeing lots of 1k block regressions on gce-xfstests post-merge window that wasn't showing up on the ext4.git tree before I sent my pull request to Linus. Jens, could you expedite a pull request to Linus? This is affecting ext4 on 1k block file systems on x86/x86_64, so this is not a ppc-only regression. Anton or Chandan, could you do me a favor and verify whether or not 64k block sizes are working for you on ppcle on ext4 by running xfstests? Light duty testing works for me but when I stress ext4 with pagesize==blocksize on ppcle64 via xfstests, it blows up. I suspect (but am not sure) it's due to (non-upstream) device driver issues, and a verification that you can run xfstests on your ppcle64 systems using standard upstream device drivers would be very helpful, since I don't have easy console access on the machines I have access to at $WORK. :-( And of course, if there are still blocksize==pagesize issues on ext4 on ppc64le, it would be good to know that too. Many thanks!! - Ted P.S. And for those people who are doing storage work, let me put in a plug for "gce-xfstests full". It's cheap and finds lots of problems before I and others have to. And if the $1.50 USD is the problem, let me know and I'll try to work something out. :-) :-) -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
