From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <38A6424C.F230E4C@geotec.net> Date: Sat, 12 Feb 2000 23:34:04 -0600 From: mrharris Reply-To: mrharris@geotec.net MIME-Version: 1.0 Subject: Re: [linux-lvm] Configuring boot partition with LVM (fwd) References: <38A1E06D.732A9B0@tkg.com> Content-Transfer-Encoding: 7bit Sender: owner-linux-lvm Errors-To: owner-linux-lvm List-Id: Content-Type: text/plain; charset="us-ascii" To: Linux LVM mailing list As of AIX 4.3.3 you can dump to a mirrored device, you can also now stripe and mirror with 4.3.3, a major improvement for production systems. Christopher Shaulis wrote: > > As of AIX 4.3.3, you can't boot off of a striped logical volume, > although you can have your boot partition mirrored on multiple physical > volumes. All of the physical volumes with a copy of the boot lv must be > in the boot list. Thats new as of AIX 4.2.0, although you need a couple > APARs to have it work right at that version. > > I can't remember exactly how they explained it, but IBM has a good > reason for not allowing mirrored dump devices. I think the idea is that > in order to catch the system dumping in the LVM code itself, you have to > write the dump without the aid of the LVM. I think the way that works is > that it precomputes a list of offset:extent lists for the device when it > is brought online. If anyone really wants to know what goes on behind > the scenes let me know -- I've got a couple colleagues that do AIX > kernel development at IBM. You are allowed to have a secondary dump > device but that only gets used if writing to the first device fails. > > Christopher > > From: Jens-Uwe Mager > > At least the IBM people with the AIX LVM are able to make that > > work. The only thing that they were not able for a long time is to > > make system dumps work in such a configuration. But I believe that > > even that works under AIX 4.3.x now. -- Chaos, panic, & disorder - my work here is done.