From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Sat, 29 Jan 2000 12:32:15 -0800 From: "Peter C. Norton" Subject: Re: [linux-lvm] Re: (reiserfs) Re: AIX JFS dual-mount Message-ID: <20000129123215.B24375@lenin.nu> References: <20000129001449.A13523@ultraviolet.org> <20000129095403.A24375@lenin.nu> <20000129122614.C13523@ultraviolet.org> Mime-Version: 1.0 In-Reply-To: <20000129122614.C13523@ultraviolet.org>; from treed@ultraviolet.org on Sat, Jan 29, 2000 at 12:26:14PM -0800 Sender: owner-linux-lvm Errors-To: owner-linux-lvm List-Id: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Tracy R Reed Cc: linux-lvm@msede.com There does seem to be a seagate scsi drive listed that does some kind of dlocks. Dlocks may not be FC only. -Peter On Sat, Jan 29, 2000 at 12:26:14PM -0800, Tracy R Reed wrote: > 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" -- The 5 year plan: In five years we'll make up another plan. Or just re-use this one.