From: Mike Snitzer <snitzer@redhat.com>
To: nikhil <nkshirsagar@gmail.com>
Cc: LVM general discussion and development <linux-lvm@redhat.com>
Subject: Re: [linux-lvm] persistent value of tunables for dmsetup --target=cache ?
Date: Wed, 22 Apr 2015 10:25:15 -0400 [thread overview]
Message-ID: <20150422142515.GA4468@redhat.com> (raw)
In-Reply-To: <55376E51.2040400@redhat.com>
On Wed, Apr 22 2015 at 5:48am -0400,
Zdenek Kabelac <zkabelac@redhat.com> wrote:
> Dne 21.4.2015 v 10:58 nikhil napsal(a):
> >Hello,
> >
> >how do I ensure that the tunable (for eg. dmsetup message vg02-jetcache_lv 0
> >write_promote_adjustment 0) will remain the same value even after reboot?
> >
> >Seems like the tunables values reset to earlier values upon reboot of the
> >machine.
> >
> >Help! :)
>
>
> By using them, when you create/load dm table for your cache target.
Best to use lvm2 to create/configure/tune dm-cache. Otherwise, if
you're just using the dmsetup interface directly you won't have your
tunings persist.
prev parent reply other threads:[~2015-04-22 14:25 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-21 8:58 [linux-lvm] persistent value of tunables for dmsetup --target=cache ? nikhil
2015-04-22 9:48 ` Zdenek Kabelac
2015-04-22 14:25 ` Mike Snitzer [this message]
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