* Reiser4 on top of software raid 1 - synchronous write "problem"?
@ 2006-06-29 21:44 Diego Pinheiro
2006-06-30 10:37 ` Alexander Zarochentsev
0 siblings, 1 reply; 2+ messages in thread
From: Diego Pinheiro @ 2006-06-29 21:44 UTC (permalink / raw)
To: reiserfs-list
Hi all,
I got a ZAM-1055 "disable_write_barrier", "using synchronous write" notice when trying to use a reiser4 on top of a software raid 1 (dmraid).
I know it's just a notice, but should I experiment any performance loss because of the synchronous writes?
Thanks,
Diego
PS. kernel 2.6.16.20 with reiser4-for-2.6.16-4 patch
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Reiser4 on top of software raid 1 - synchronous write "problem"?
2006-06-29 21:44 Reiser4 on top of software raid 1 - synchronous write "problem"? Diego Pinheiro
@ 2006-06-30 10:37 ` Alexander Zarochentsev
0 siblings, 0 replies; 2+ messages in thread
From: Alexander Zarochentsev @ 2006-06-30 10:37 UTC (permalink / raw)
To: reiserfs-list; +Cc: Diego Pinheiro
On Friday 30 June 2006 01:44, Diego Pinheiro wrote:
> Hi all,
>
> I got a ZAM-1055 "disable_write_barrier", "using synchronous write"
> notice when trying to use a reiser4 on top of a software raid 1
> (dmraid).
> I know it's just a notice, but should I experiment any performance
> loss because of the synchronous writes?
I don't think so. A number of optimizations (copy on capture, for
example) should be done in reiser4 to see any effect of working write
barrier support.
Best,
Alex.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2006-06-29 21:44 Reiser4 on top of software raid 1 - synchronous write "problem"? Diego Pinheiro
2006-06-30 10:37 ` Alexander Zarochentsev
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