From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Sat, 29 Jan 2000 12:26:14 -0800 From: Tracy R Reed Subject: Re: [linux-lvm] Re: (reiserfs) Re: AIX JFS dual-mount Message-ID: <20000129122614.C13523@ultraviolet.org> References: <20000129001449.A13523@ultraviolet.org> <20000129095403.A24375@lenin.nu> Mime-Version: 1.0 In-Reply-To: <20000129095403.A24375@lenin.nu>; from spacey@lenin.nu on Sat, Jan 29, 2000 at 09:54:03AM -0800 Sender: owner-linux-lvm Errors-To: owner-linux-lvm List-Id: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: "Peter C. Norton" Cc: linux-lvm@msede.com On Sat, Jan 29, 2000 at 09:54:03AM -0800, Peter C. Norton wrote: > GFS seems to require some support from hardware in the way of "dlocks", a > not-too widely supported standard. I think you'd need to have drives that > implement dlocks, and that the lvm would have to know about them. What > would need to be done to the volume stuff to support dlocks? Could any > filesystem be built on top of a volume manager with dlock support? There are two options: You can use dlocks with special drive firmware or you can use a global lock manager over TCP with one of the hosts running the lock manager. I was thinking the latter way might be possible for non-fibrechannel setups. -- Tracy Reed http://www.ultraviolet.org "She moves in mysterious ways"