From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: util-linux-owner@vger.kernel.org Received: from mx1.redhat.com ([209.132.183.28]:52930 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753841Ab1FTOFB (ORCPT ); Mon, 20 Jun 2011 10:05:01 -0400 Date: Mon, 20 Jun 2011 16:04:57 +0200 From: Karel Zak To: John Lindgren Cc: util-linux@vger.kernel.org, Andreas Dilger Subject: Re: blkid: excessive random reads probing for ZFS on NTFS filesystem Message-ID: <20110620140457.GI17967@nb.net.home> References: <4DF50D58.9020800@tds.net> <20110620111640.GE17967@nb.net.home> <4DFF3613.9050705@tds.net> <20110620124612.GF17967@nb.net.home> <4DFF45A0.1040703@tds.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <4DFF45A0.1040703@tds.net> Sender: util-linux-owner@vger.kernel.org List-ID: On Mon, Jun 20, 2011 at 09:05:36AM -0400, John Lindgren wrote: > I did try that; however, blkid checks *all* filesystems, even after it > finds a match, just in case two probes turn up positive. Even passing > "-n nozfs" doesn't actually prevent it from checking for ZFS. The name of the FS in libblkid is zfs_member :-) blkid -p -o udev -n nozfs_member Yeah, crazy name, see our TODO file: - add something like "blkid --list-known" to list all supported filesystems/raids Karel -- Karel Zak http://karelzak.blogspot.com