[dm-devel] [RFC] disk doesn't spin down with thin pool + dmeventd

[Zdenek Kabelac]

Dne 7.1.2016 v 20:31 Alan Jenkins napsal(a):
> Hi
>
> I tried using Docker on my Fedora NAS box.  It created a thin pool LV, which
> caused hard drive activity every ~10 seconds.
>
> dmeventd queries the thin pool every 10 seconds, and it causes a transaction
> commit in order to make sure the statistics are up to date. But transactions
> are already supposed to be committed after 1 second. (See
> Documentation/device-mapper/thin-provisioning.txt, "Updating on-disk metadata").
>
> It seems like a simple case of "don't do that".  The kernel already lets us
> avoid the commit.  How about it (patch below)?  If it seems reasonable, I can
> whip up a commit message for it.
>

Hi

I believe it's already solved upstream in version 2.02.133
of lvm2 package with this commit:

81e9ab3156badecc6a64447708c4ae4886e3c244
Date: Thu Oct 22 12:36:25 2015 +0200

Which version of lvm2 are you using ?

Regards

Zdenek