linux-kernel - Re: Why minor is still 8 bit?

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Message-ID: <4FCD5869.8000306@zytor.com>
Date:	Mon, 04 Jun 2012 17:52:57 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	George Shuklin <george.shuklin@...il.com>
CC:	Casey Schaufler <casey@...aufler-ca.com>,
	Al Viro <viro@...IV.linux.org.uk>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: Why minor is still 8 bit?

On 06/04/2012 11:59 AM, George Shuklin wrote:
> Very simple sample: I'd like to create shared storage to publish volumes
> via ISCSI. ~60Tb of drives, ~2Gb average disk size = 30k disk images.
> Can I just create a bunch of LV and export them by iet or scst? Nope:
> There is a serious limit for amount of active LV per host. Yes, I can
> create filesystem, put images (as file) to that filesystem and publish
> them back, but why FS is needed to do such simple task?

You realize that with that many volumes, a logical volume manager *is* a
filesystem, right?

	-hpa
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