From: Malahal Naineni <malahal@us.ibm.com>
To: dm-devel@redhat.com
Subject: Re: Is there a way to see updated contents of a DM target's underlying device while the DM target is in use?
Date: Wed, 30 Jun 2010 17:58:11 -0700 [thread overview]
Message-ID: <20100701005811.GB24284@us.ibm.com> (raw)
In-Reply-To: <20100701102203.51d9a8fc@notabene.brown>
Neil Brown [neilb@suse.de] wrote:
> try blockdev --flushbufs
> on the device before reading it.
> Or issue the ioctl yourself.
This should help.
> Or use O_DIRECT to read.
Can this help? He is reading from logical volume lv1 but the page cache
exists for linear device fred01.
Thanks, Malahal.
prev parent reply other threads:[~2010-07-01 0:58 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-30 22:54 Is there a way to see updated contents of a DM target's underlying device while the DM target is in use? Riches Jr, RobertX M
2010-06-30 23:08 ` Alasdair G Kergon
2010-06-30 23:53 ` Riches Jr, RobertX M
2010-07-01 0:51 ` Alasdair G Kergon
2010-07-01 1:01 ` Alasdair G Kergon
2010-07-01 1:03 ` Malahal Naineni
2010-07-01 1:49 ` Alasdair G Kergon
2010-07-01 16:46 ` Riches Jr, RobertX M
2010-07-01 19:00 ` Malahal Naineni
2010-07-02 14:52 ` Hannes Reinecke
2010-07-01 0:54 ` Malahal Naineni
2010-07-01 0:22 ` Neil Brown
2010-07-01 0:58 ` Malahal Naineni [this message]
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