Re: CentOS 5.5 does not recognise SAS drives with LSI 1068E Controller

[John R Pierce <pierce@xxxxxxxxxxxx>]

On 03/10/11 12:40 PM, Les Mikesell wrote:
> I thought there were also problems in layers like lvm that keep the OS
> from knowing exactly what happened.  And a lot of software that should
> fsync at certain points probably doesn't because linux has historically
> handled it badly.

thats another problem entirely.   both the MD and LVM layers of linux 
tend to drop write barriers which are supposed to ensure that key writes 
occur in the correct order.     this is one reason we tend to run our 
mission critical database servers on Solaris or AIX rather than Linux.


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