Date: Fri, 17 Sep 1999 09:11:03 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: Julian Elischer <julian@whistle.com> Cc: Dan Nelson <dnelson@emsphone.com>, Brad Knowles <blk@skynet.be>, Thomas Dean <tomdean@ix.netcom.com>, freebsd-current@FreeBSD.ORG Subject: Re: More benchmarking stuff... Message-ID: <199909171611.JAA53554@apollo.backplane.com> References: <Pine.BSF.4.05.9909170855210.13667-100000@home.elischer.org>
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:> files sitting in unflushed disk caches and you reboot, those files are
:> lost. Softupdated just guarantees that the disk will be in a stable
:> state after a crash, not that all data written before the crash will be
:> available.
:>
:
:Soft updates guarantees that when an fsync() is done, it's on disk...
Actually.... it doesn't. I wish it did. All softupdates does is
guarentee that the on-disk image is stable, it doesn't guarentee
that the on-disk image has been synchronized to what the program
thinks it has written to the file.
-Matt
Matthew Dillon
<dillon@backplane.com>
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