[linux-lvm] Mirroring implementation

brem belguebli brem.belguebli at gmail.com
Tue Jul 28 13:50:54 UTC 2009

Hi Roy,

I would be better indeed, but practically, even if it is supposed to request
both disks (san arrays) in //, the closest array  will almost always be the
first to answer unless it is overloaded.

What I'm looking for is the behaviour for writes, as I don't want to deal
with failure scenarios in which I could find outdated data on my last
remaining mirror leg.

2009/7/28, Roy Sigurd Karlsbakk <roy at karlsbakk.net>:
> On 27. juli. 2009, at 15.56, malahal at us.ibm.com wrote:
> It writes in parallel. Reads from a single device (switches on a device
>> failure only).
> Wouldn't it be better to read in parallel, from different places? I've
> heard some controllers can do this, so that the reading will be somehow like
> reading from a RAID-0 stripe.
> roy
> --
> Roy Sigurd Karlsbakk
> (+47) 97542685
> roy at karlsbakk.net
> http://blogg.karlsbakk.net/
> --
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> er et elementært imperativ for alle pedagoger å unngå eksessiv anvendelse av
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> og relevante synonymer på norsk.
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