On 2011-Sep-07 19:35:09 +0300, Andriy Gapon <avg_at_FreeBSD.org> wrote: >Thanks to a lot of excellent testing, debugging and analysis from Sebastian >(which went behind the scenes) we now have this patch: >http://people.freebsd.org/~avg/zfs-boot-gang.diff ... >If you use compression for a filesystem where your kernel resides and >you get a problem with booting, then please test this patch and >report back. Since the problem isn't consistent (it can appear on some files but not others), I modified zfstest to take a pathname, rather than have the pathname hard-coded. Using this, I found an example file that works with the patch but not with the old ZFS code: pjdesk% ./zfstest.old /boot/kernel.old/iwn6000fw.ko.symbols /dev/ad0p3 |less ZFS: i/o error - all block copies unavailable can't lookup pjdesk% ./zfstest.old /boot/kernel.old/iwn6000fw.ko.symbols /dev/ad0p3 |less ZFS: i/o error - all block copies unavailable can't lookup pjdesk% ./zfstest.old /boot/kernel.old/iwn6000fw.ko.symbols /dev/ad0p3 |less ZFS: i/o error - all block copies unavailable can't lookup pjdesk% ./zfstest /boot/kernel.old/iwn6000fw.ko.symbols /dev/ad0p3 |less ^?ELF^B^A^A ^_at_^_at_^_at_^_at_^_at_^_at_^_at_^_at_^A^_at_>^_at_^A^_at_^_at_^_at_^_at_^_at_^_at_^_at_^_at_^_at_^_at_^_at_^_at_^_at_^_at_^_at_^_at_^_at_^_at_^_at_p ... pjdesk% ./zfstest /boot/kernel.old/iwn6000fw.ko.symbols /dev/ad0p3 | cmp - /boot/kernel.old/iwn6000fw.ko.symbols pjdesk% ./zfstest /boot/kernel.old/iwn6000fw.ko.symbols /dev/ad0p3 | cmp - /boot/kernel.old/iwn6000fw.ko.symbols pjdesk% ./zfstest.old /boot/kernel.old/iwn6000fw.ko.symbols /dev/ad0p3 | cmp - /boot/kernel.old/iwn6000fw.ko.symbols stdin /boot/kernel.old/iwn6000fw.ko.symbols differ: char 1, line 1 pjdesk% This was tested on an 8-STABLE system at r225392. I've built new bootblocks but not tested them yet - I will do that tomorrow. -- Peter Jeremy
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