For those who use ext3.
Devdas Bhagat
----- Forwarded message from Andrew McNamara <[EMAIL PROTECTED]> -----
From: Andrew McNamara <[EMAIL PROTECTED]>
Date: Wed, 17 Jul 2002 15:57:29 +1000
To: Henrique de Moraes Holschuh <[EMAIL PROTECTED]>
Cc: [EMAIL PROTECTED]
Subject: Re: FileSystem Performance ... re;Turning down logging
>> Not true.
>>
>> If you're using mmap(MAP_SHARED) and write(2) against the same fd
>> and you push it real hard you can oops data=journal in 20 minutes
>> on a 4-way. That's the only bug of which I'm aware.
>
>Then they fixed it in the current code, but 2.4.18 is broken for journaled
>data. I can oops the kernel here on demand. The access pattern that
>triggers the bug is that of Cyrus IMAPd 2.1.x, which I believe uses mmap.
>
>If Andrew Morton does not know about this bug in vanilla 2.4.18, I guess I
>will have to report it again. Darn, I hate to play russian roullete with my
>filesystems... BTW, uniprocessor Athlon 1.2GHz here, so it is not that
>hard to oops it at all.
I forwarded this off to Andrew Morton - here's the reply (for the list -
Henrique will have already seen it):
Ugh. You're right. mmap and data=journal do not mix happily.
Please send the report (messages, ksymoops output, etc) to
[EMAIL PROTECTED], but it's presumably the one we know about.
It got exposed recently by a fix for something else :(
In the meanwhile, suggest you stick with data=ordered.
--
Andrew McNamara, Senior Developer, Object Craft
http://www.object-craft.com.au/
-
To unsubscribe, send mail to [EMAIL PROTECTED] with content
(not subject): unsubscribe postfix-users
----- End forwarded message -----
-------------------------------------------------------
This sf.net email is sponsored by:ThinkGeek
Welcome to geek heaven.
http://thinkgeek.com/sf
_______________________________________________
linux-india-help mailing list
[EMAIL PROTECTED]
https://lists.sourceforge.net/lists/listinfo/linux-india-help
