From: Joe Thornber <thornber@redhat.com>
To: LVM general discussion and development <linux-lvm@redhat.com>
Subject: Re: [linux-lvm] Strange dm-cache activity at startup
Date: Fri, 11 Sep 2015 13:51:05 +0100 [thread overview]
Message-ID: <20150911125104.GA8027@rh-vpn> (raw)
In-Reply-To: <CAAxjCEwMqpAWFc+BBNW6bLUC7mkjkjdvFkRz66WnZEB__qW2dw@mail.gmail.com>
On Thu, Sep 10, 2015 at 11:30:27AM +0200, Stefan Ring wrote:
> Is this normal/expected? What does it do? Why does it write back huge
> amounts of data to the HDD after each system start?
No, this is not expected. The most likely cause is your system was
not shutdown cleanly so dm-cache has no choice but to assume all
blocks are dirty and need writing back. Make sure your volumes are
being deactivated as part of shutdown.
- Joe
next prev parent reply other threads:[~2015-09-11 12:51 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-10 9:30 [linux-lvm] Strange dm-cache activity at startup Stefan Ring
2015-09-10 12:59 ` Zdenek Kabelac
2015-09-10 13:11 ` Stefan Ring
2015-09-10 13:48 ` Zdenek Kabelac
2015-09-11 12:51 ` Joe Thornber [this message]
2015-09-11 13:28 ` John Stoffel
2015-09-11 14:50 ` Simon O'Riordan
2015-09-11 15:32 ` John Stoffel
2015-09-16 7:48 ` Stefan Ring
2015-09-17 15:08 ` Stefan Ring
2015-10-16 17:54 ` [linux-lvm] LVM cache (or dm-cache) shutdown Ian Pilcher
2015-10-17 17:49 ` Zdenek Kabelac
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