Date: Thu, 13 Dec 2007 02:58:43 +0000 From: Hugo Silva <hugo@barafranca.com> To: freebsd-current@FreeBSD.ORG Cc: Benjamin Close <Benjamin.Close@clearchain.com> Subject: Re: ZFS melting under postgres... Message-ID: <47609FE3.8040606@barafranca.com> In-Reply-To: <47609F0A.7010805@clearchain.com> References: <47606C09.2070209@isc.org> <47609F0A.7010805@clearchain.com>
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Benjamin Close wrote: > Peter Losher wrote: >> Hi, >> >> As part of our testing 7.0/ZFS we tried putting it thru it's paces >> having ZFS act as our storage medium for some test pgsql db's (like for >> sqlgrey, etc) and in both BETA2 and BETA4 (amd64) we get the same >> results with a RAIDZ2 container: >> >> -=- >> Dec 12 14:24:12 nsa sqlgrey: fatal: setconfig error at >> /usr/local/sbin/sqlgrey line 186. >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad4 offset=3665128448 size=22016 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad6 offset=3665128448 size=22016 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad8 offset=3665128448 size=22016 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad10 offset=3665128448 size=22016 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad12 offset=3665128448 size=22016 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad14 offset=3665128448 size=22016 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad16 offset=3665128448 size=21504 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad18 offset=3665128448 size=21504 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad4 offset=3665128448 size=22016 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad6 offset=3665128448 size=22016 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad8 offset=3665128448 size=22016 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad10 offset=3665128448 size=22016 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad12 offset=3665128448 size=22016 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad14 offset=3665128448 size=22016 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad16 offset=3665128448 size=21504 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad18 offset=3665128448 size=21504 >> Dec 12 16:49:53 nsa root: ZFS: zpool I/O failure, zpool=vault error=86 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad4 offset=3665128448 size=22016 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad6 offset=3665128448 size=22016 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad8 offset=3665128448 size=22016 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad10 offset=3665128448 size=22016 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad12 offset=3665128448 size=22016 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad14 offset=3665128448 size=22016 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad16 offset=3665128448 size=21504 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad18 offset=3665128448 size=21504 >> Dec 12 16:49:53 nsa postgres[50527]: [5-1] PANIC: could not write to >> log file 2, segment 53 at offset 7864320, length 8192: Input/output >> error >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad4 offset=3665128448 size=22016 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad6 offset=3665128448 size=22016 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad8 offset=3665128448 size=22016 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad10 offset=3665128448 size=22016 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad12 offset=3665128448 size=22016 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad14 offset=3665128448 size=22016 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad16 offset=3665128448 size=21504 >> Dec 12 16:49:53 nsa root: ZFS: checksum mismatch, zpool=vault >> path=/dev/ad18 offset=3665128448 size=21504 >> Dec 12 16:49:53 nsa root: ZFS: zpool I/O failure, zpool=vault error=86 >> Dec 12 16:49:53 nsa postgres[50596]: [1-1] FATAL: the database system >> is starting up >> Dec 12 16:49:53 nsa kernel: pid 50527 (postgres), uid 70: exited on >> signal 6 (core dumped) >> -=- >> >> It basically corrupts the container from the inside until it fails >> completely (usually withing 24-48 hours depending on how busy the db is) >> >> I had thought it was a bad SATA replicator/controller, but we had that >> replaced w/ one from Supermicro. So it's either the disks, or something >> in ZFS. Anyone used ZFS to backend any db's (mysql or pgsql?) >> >> If you need more info, let me know... >> >> > Try turning of zil, whilst I don't use a db, I have zfs under high > load. I've found without zil turned off I see checksum corruption as > well: > > /boot/loader.conf > > vfs.zfs.zil_disable=1 > > Cheers, > Benjamin Wouldn't it be a bad idea to disable ZIL ? http://www.solarisinternals.com/wiki/index.php/ZFS_Evil_Tuning_Guide#Disabling_the_ZIL_.28Don.27t.29 Regards, Hugo > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to > "freebsd-current-unsubscribe@freebsd.org"
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