On Tue, Apr 08, 2014 at 09:42:03AM +0800, Qu Wenruo wrote: > >I had debian add this to the initramfs initrd by default so that someone > >can recover their root filesystem with this command if it won't mount. > > > >What got fixed is the kernel used to oops and crash, and now it gives a > >nice "can't mount" error message. > > > >Marc > Thanks for the note. > > After reading following up mails on the thread, I agree that the note is > needed. > > But I would like to add more method to judge whether to call > btrfs-zero-log or other tools like btrfsck. Sounds like a good idea. It may also make sense in places to have the man page point to the btrfs wiki for more detailled info since it's easier to update the wiki than to update the man page on thousands or millions of systems :) I wrote http://marc.merlins.org/perso/btrfs/2014-03.html#Btrfs-Tips_-Btrfs-Scrub-and-Btrfs-Filesystem-Repair which is linked off https://btrfs.wiki.kernel.org/index.php/Btrfsck which I just updated with more details. It would be great to put a pointer to the official wiki in the man page, and also in the btrfsck man page which currently doesn't warn people enough that they have many other options to try before btrfsck. Now that I updated the official wiki page, would you agree that it would be good to link to it in the man page? > It would be quite nice if any one can provide a log-tree-broken small > btrfs image for me to test? > (Personally, I would prefer using dmesg warning/backtrace and btrfsck > result to make sure to call btrfs-zero-log) Unfortunately, my broken SSD that was generating that corruption has been returned to the vendor, and my new SSD doesn't crash anymore, so I don't have such broken filesystem anymore. > P.S: If btrfs can be automatically mounted as RO when log tree is > broken, it would be better. > But it also seems log tree related things will be improved sooner or > later, it may not be so urgent. I agree this is a great idea, especially if it's the root filesystem without which you can't fix the machine that's broken. Thank you, Marc -- "A mouse is a device used to point at the xterm you want to type in" - A.S.R. Microsoft is to operating systems .... .... what McDonalds is to gourmet cooking Home page: http://marc.merlins.org/ -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
