data older than bdflush interval not being written to disk

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On the ext3-users list, NFS maintainer Neil Brown mentions about an ext3
bug where time stamps of some blocks are wrong so old data doesn't get
flushed out by bdflush when it should, this seems to increase memory
pressure on busy fileservers and database servers and causes writestorms
when the data is forced out on a full journal

I have filed a bugzilla report (against 7.3) for this, though even the
RH 9 kernel doesn't have this fix

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=90191

I see it in rawhide but given the recent introduction of exec-sheild in
rawhide, it's not appropiate to use this in production.

Arjan/Matt/Bill, any chance of an errata kernel which incorporates the
bdflush fix

Regards, Yusuf
-- 
Yusuf Goolamabbas      
yusufg@xxxxxxxxxxxx   





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