Re: Is there a way to see updated contents of a DM target's underlying device while the DM target is in use?

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Subject: Re: Is there a way to see updated contents of a DM target's underlying device while the DM target is in use?
From: Alasdair G Kergon <agk@xxxxxxxxxx>
Date: Thu, 1 Jul 2010 02:01:37 +0100
Cc: "Dm-Devel Mailing List Send-To Address \(dm-devel@xxxxxxxxxx\)" <dm-devel@xxxxxxxxxx>
In-reply-to: <20100701005156.GY23989@xxxxxxxxxxxxxxxxxxxxx>
Mail-followup-to: "Riches Jr, RobertX M" <robertx.m.riches.jr@xxxxxxxxx>, "Dm-Devel Mailing List Send-To Address (dm-devel@xxxxxxxxxx)" <dm-devel@xxxxxxxxxx>
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References: <4BD43A85686FC34D819098DB1C3999D99E4199BA@xxxxxxxxxxxxxxxxxxxxxxxxxxxx> <20100630230828.GX23989@xxxxxxxxxxxxxxxxxxxxx> <4BD43A85686FC34D819098DB1C3999D99E419AA2@xxxxxxxxxxxxxxxxxxxxxxxxxxxx> <20100701005156.GY23989@xxxxxxxxxxxxxxxxxxxxx>
Reply-to: device-mapper development <dm-devel@xxxxxxxxxx>
User-agent: Mutt/1.5.18 (2008-05-17)

On Thu, Jul 01, 2010 at 01:51:57AM +0100, Alasdair G Kergon wrote:
> Add conv=odirect to dd
> Add blockdev --flushbufs after other writes.
 
Applications like lvm2 have those things built in to guarantee metadata
consistency at application level.

Alasdair

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References:
- Is there a way to see updated contents of a DM target's underlying device while the DM target is in use?
  - From: Riches Jr, RobertX M
- Re: Is there a way to see updated contents of a DM target's underlying device while the DM target is in use?
  - From: Alasdair G Kergon
- Re: Is there a way to see updated contents of a DM target's underlying device while the DM target is in use?
  - From: Riches Jr, RobertX M
- Re: Is there a way to see updated contents of a DM target's underlying device while the DM target is in use?
  - From: Alasdair G Kergon

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