Date: Thu, 15 Oct 2009 19:42:00 +0200 From: Pawel Jakub Dawidek <pjd@FreeBSD.org> To: Solon Lutz <solon@pyro.de> Cc: freebsd-fs@FreeBSD.ORG Subject: Re: Help needed! ZFS I/O error recovery? Message-ID: <20091015174200.GB1880@garage.freebsd.pl> In-Reply-To: <572088116.20091015011137@pyro.de> References: <90685589.20091013092418@pyro.de> <20091013072712.GA1597@garage.freebsd.pl> <12910471099.20091013095322@pyro.de> <20091013075511.GC1597@garage.freebsd.pl> <1433853337.20091013100348@pyro.de> <20091013082116.GE1597@garage.freebsd.pl> <673550066.20091013133544@pyro.de> <473227349.20091014184731@pyro.de> <20091014210528.GC1727@garage.freebsd.pl> <572088116.20091015011137@pyro.de>
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[-- Attachment #1 --] On Thu, Oct 15, 2009 at 01:11:37AM +0200, Solon Lutz wrote: > >> I just tried it with more TXGs, even with a jump of -300, but it always gives > >> an "cannot iterate filesystems: I/O error" error if I try to import the pool. > > >> Also because of mounting the pool, the TXg has gone up to 13445935 from > >> initially 13462284. > > > We can try to turn off checksum verification entirely, but it will most > > likely just panic your system. > > > If you want to do this, edit > > sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/spa.h file and change > > ZIO_CHECKSUM_EQUAL() macro to something like this: > > > #define ZIO_CHECKSUM_EQUAL(zc1, zc2) (1) > > Yes, it paniced as soon as I tried zpool import. Can you tell where ZFS is taking > the information from, that there are I/O errors? Is this based on checksums or is > there some kind of I/O-error-flag? Checksum mismatch is reported as EIO error. Not sure what else we can try. I guess you are not able to snapshot problematic datasets? -- Pawel Jakub Dawidek http://www.wheel.pl pjd@FreeBSD.org http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am! [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (FreeBSD) iD8DBQFK117nForvXbEpPzQRAvYhAJkBAzP9CCdc+vxSNROLLHCwELyIlwCgh0Tk qCjt7yqW/WRDs6OyDi5uf10= =YbqB -----END PGP SIGNATURE-----
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