Date: Thu, 8 Sep 2011 15:50:16 +1000 From: Peter Jeremy <peterjeremy@acm.org> To: Andriy Gapon <avg@FreeBSD.org> Cc: freebsd-fs@FreeBSD.org, freebsd-current@FreeBSD.org, Sebastian Chmielewski <chmiels@o2.pl> Subject: Re: ZFS: i/o error - all block copies unavailable after upgrading to r225312 Message-ID: <20110908055016.GB28874@server.vk2pj.dyndns.org> In-Reply-To: <4E679D3D.1000007@FreeBSD.org> References: <20110901223646.14b8aae8@o2.pl> <4E60DBBD.1040703@FreeBSD.org> <4E679D3D.1000007@FreeBSD.org>
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[-- Attachment #1 --] On 2011-Sep-07 19:35:09 +0300, Andriy Gapon <avg@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 ^@^@^@^@^@^@^@^@^A^@>^@^A^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@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 [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (FreeBSD) iEYEARECAAYFAk5oV5gACgkQ/opHv/APuIcQdACfUxBjX4w30gt+5BaxZRWHVMpe KmoAnAz8ki7P18u8cIGN4a4Gkbc2uC1H =Ov79 -----END PGP SIGNATURE-----help
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