I've never had to boot HP-UX in a "rescue" mode, but with AIX, it's mainly there to mount the root volume group. I would imagine that HP would be similar. I don't think I've ever to to modify the LVM config in rescue mode. Sarwer On Thu, 29 Nov 2001, Steve Wray wrote: > Sounds to me like Linux is a sort of in-betweeny here! > > I assume that its possible to boot HP-UX and AIX machines > from their 'rescue' media and have full and easy access > Sounds to me like Linux is a sort of in-betweeny here! > > I assume that its possible to boot HP-UX and AIX machines > from their 'rescue' media and have full and easy access > to the LVM structure? > > > > > From: linux-lvm-admin@sistina.com [mailto:linux-lvm-admin@sistina.com]On > > Behalf Of Sarwer Zafiruddin > > > > IMHO (which shouldn't mean much to anyone), a few Unix platforms out > there > > do use LVM for their root/OS filesystems, like HP HP-UX and IBM AIX. My > > experience with both are that they are very useful for OS filesystem > > issues (especially for failing disks). The reason LVM works so well in > > these platforms is that the kernel, bootup sequences, and installation > > media all have tight LVM intergration. On the other hand I have also > seen > > piss poor implimentation of LVM with the OS filesystems, like > > Solaris/Veritas root encapsulation (when it works...it's good, when it's > > broke...prepare for a major headache). I am hopefull as Linux LVM > matures, > > major distributions will intergrate it as a critical feature of > > the OS. That > > will also be a major step in making the Linux a more viable OS solution > in > > the Enterprise. > > > > Sarwer > > > > On Thu, 29 Nov 2001, Steve Wray wrote: > > > > > > From: linux-lvm-admin@sistina.com > > [mailto:linux-lvm-admin@sistina.com]On > > > > Behalf Of mitch@mdmiller.com > > > > > (b) dynamically expand the amount of space available to the > > > > root partition. > > > > > > > > Pardon me for being a neophyte here, but what else goes on the root > > > > partition which takes any significant or dynamic amount of > > space? Isn't > > > > the root just a place to put all the top level directories, > > the contents > > > > of which are typically all on another partition anyway? > > > > > > Exactly; virtually all the content of the root partition should > > > be describable as "static/unshareable" which means that it doesn't > > > need snapshotting in case you accidentally delete something, > > > or dynamically resizable. > > > > > > Another of the purposes of the root filesystem is to provide > > > an island of sanity in a sea of madness when things go wrong; > > > typically the ideal is to have a system that can easily be > > > booted into a rescue mode from the root partition only. > > > In this setup one has "ghost" /usr/*bin et al directories > > > that are on the root filesystem but get mounted over > > > when you boot the system for real. These can provide the > > > tools you need to rescue the system. > > > > > > Having root LVM just means that if anything goes wrong > > > with the LVM subsystem then you *need* the system to > > > be bootable from floppy or CDROM, and that is sometimes > > > less practical than having root *not* be LVM in the > > > first place! > > > :) > > > anyhow this is getting away from the topic (which I'm really > > > interested in); LVM on mandrake 8.1 with devfs... > > > > > > > > > > > -- Mitch > > > > > > > > > > > > > > > > _______________________________________________ > > > > linux-lvm mailing list > > > > linux-lvm@sistina.com > > > > http://lists.sistina.com/mailman/listinfo/linux-lvm > > > > read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html > > > > > > > > > > > > > > _______________________________________________ > > > linux-lvm mailing list > > > linux-lvm@sistina.com > > > http://lists.sistina.com/mailman/listinfo/linux-lvm > > > read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html > > > > > > > > > > -- > > -------------------------- > > System Administrator > > Rune Information Services > > http://www.rune.org > > e-mail: sarwer@rune.org > > -------------------------- > > > > > > _______________________________________________ > > linux-lvm mailing list > > linux-lvm@sistina.com > > http://lists.sistina.com/mailman/listinfo/linux-lvm > > read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html > > > > > > -- -------------------------- System Administrator Rune Information Services http://www.rune.org e-mail: sarwer@rune.org --------------------------
