Date: Sun, 24 Feb 2008 16:15:09 -0800 From: "Bruce A. Mah" <bmah@freebsd.org> To: Brian Biskeborn <bbiskebo@Princeton.EDU> Cc: freebsd-current@freebsd.org, Peter Schuller <peter.schuller@infidyne.com>, Richard Todd <rmtodd@ichotolot.servalan.com> Subject: Re: ZFS: data sometimes not getting correctly flushed to disk (possible mmap/write issue)? Message-ID: <47C2088D.2090602@freebsd.org> In-Reply-To: <47C17E2C.5040606@princeton.edu> References: <20080215231507.EAB7D641@mx2.synetsystems.com> <200802241252.52176.peter.schuller@infidyne.com> <47C17E2C.5040606@princeton.edu>
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[-- Attachment #1 --] If memory serves me right, Brian Biskeborn wrote: > This has been happening to me for a week or so (same setup - Dovecot on > ZFS). I'll disable mmap and see whether it persists. <aol>Me too.</aol> I'll give this a shot as well. (FreeBSD 7.0-PRERELEASE/amd64 from about a week ago, but I've been seeing this off and on for awhile. dovecot-1.0.10 from Ports.) Bruce. > Peter Schuller wrote: >>> 3) ktracing gen2.py shows that the py-mutagen library seems to do both >>> write()s and read/write mmap()s to the file to update the file. >> FWIW, ever since a dovecot installation of mine was moved onto ZFS one gets >> sporadic 'internel errors' from dovecot. Dovecot logs that index files are >> corrupt, and marked broken. Recovery involves re-selecting the IMAP mailbox. >> >> In response to your post, I recently turned OFF use of mmap in dovecot >> (mmap_disable = yes), and the problem seems to have gone away immediately. >> >> If it should show up again in spite of mmap being disabled I will post a >> follow-up, but it's been long enough that I believe the problem to be gone. >> > _______________________________________________ > 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" > [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFHwgiT2MoxcVugUsMRAi6nAJ0e9xqLa2WG4EA2op4EhJUzj8lBMgCg3KwC R/pjHF5xmoDqsVobEyiJno4= =qksH -----END PGP SIGNATURE-----help
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