Date: Sat, 19 Sep 1998 12:31:43 +0200 From: Eivind Eklund <eivind@yes.no> To: Terry Lambert <tlambert@primenet.com>, Don Lewis <Don.Lewis@tsc.tdk.com> Cc: current@FreeBSD.ORG Subject: Re: softupdates & fsck Message-ID: <19980919123143.36373@follo.net> In-Reply-To: <199809190802.BAA19430@usr08.primenet.com>; from Terry Lambert on Sat, Sep 19, 1998 at 08:02:00AM %2B0000 References: <199809190520.WAA09949@salsa.gv.tsc.tdk.com> <199809190802.BAA19430@usr08.primenet.com>
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On Sat, Sep 19, 1998 at 08:02:00AM +0000, Terry Lambert wrote: > That you are seeing these problems implies that the bwrite ordering > guarantees that the driver must provide (i.e., that the blocks will > be written in the order requested, and that the writes will not > return as completed until the data has been committed to the disk) > are not being honored. Given that most drives don't honour these guarantees [1] it may happen even without a problem with the driver. [1] This marks the point where somebody comes runing, waving standards documents and becoming more and more red in the face, while I say "Yes, I know they say the drives are supposed to - but in fact, the drives don't actually *do* what they're supposed to." Eivind. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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