* [linux-lvm] Re: your mail [not found] <99021711471501.00456@piglet> @ 1999-02-17 13:05 ` Heinz Mauelshagen 1999-02-17 13:13 ` Michael Marxmeier 0 siblings, 1 reply; 5+ messages in thread From: Heinz Mauelshagen @ 1999-02-17 13:05 UTC (permalink / raw) To: marka, linux-lvm; +Cc: mge > > Hello, > > Firstly great product, Thanks. > but have a couple of questions > > 1. will we be able to use this as our boot disk [vg00] Yes, but not supported with the standard distribution. Hope to have supprt in the next release. > > 2. has anyone tested if lilo can handle /dev/vg00/lvol1 so it knows how to No, it can't because it deals with sectors on a single boot disk. You have to have a (small) boot partition (for eg. /dev/sda5) to boot from and have to change to the real-root-dev in a LV after activating volume groups. > boot the kernel, I would assume changes would need to be made to allow > lilo to issue a vgchange on the [vg00] volume group. LILO had to be enhanced to be able to load sectors from multiple disks if the root logical volume is not continuous. If it must stay continuous for LILO to be able to address kernel sectors to load there would not be a real enhancement compared to booting from a hard disk partition. On Intel compatible PCs BIOS restrictions limiting the number of BIOS addressable disks apply too (LILO uses the BIOS). > Or could we leave > /boot as a disk section and build into the kernel the ability to active > [vg00] ?? Yes, we could boot with LILO form a partition based boot FS and enhance the LVM driver init stuff to activate LV root. But this driver overhead is not necessary, if we boot from a small partition based fs anyway. OTOH it would make sense if LILO could directly load the kernel image from a LV. > > 3. are there plans for LVM-MIRRORING Yes, but no fixed time frame 8*( > > 4. for allowing root on lvm, is their anny recommended file system sizes and > should contingous be set for /boot ? /boot must be in a regular disk partition containing basic commands, device specials and LVM driver/commands. About 20-30MB should be sufficient to set this up. > > Sorry if some of these questions have been duplicated, at time of writing > couldn't see anything in the archive listing. > Maybe you like to subscribe to our new linux-lvm maling list at linux-lvm@msede.com by sending a "subscribe linux-lvm" in the body of the mail to majordomo@msede.com. Regards, Heinz -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Systemmanagement C/S Deutsche Telekom AG Entwicklungszentrum Darmstadt Heinz Mauelshagen Otto-Roehm-Strasse 71c Senior Systems Engineer Postfach 10 05 41 64205 Darmstadt mge@ez-darmstadt.telekom.de Germany +49 6151 886-425 FAX-386 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [linux-lvm] Re: your mail 1999-02-17 13:05 ` [linux-lvm] Re: your mail Heinz Mauelshagen @ 1999-02-17 13:13 ` Michael Marxmeier 1999-02-17 15:02 ` Thomas Haas 1999-02-17 21:49 ` [linux-lvm] Re: your mail Shawn Leas 0 siblings, 2 replies; 5+ messages in thread From: Michael Marxmeier @ 1999-02-17 13:13 UTC (permalink / raw) To: mauelsha; +Cc: marka, linux-lvm, mge Heinz wrote: > /boot must be in a regular disk partition containing basic commands, > device specials and LVM driver/commands. > About 20-30MB should be sufficient to set this up. IMO this could even be less if initrd is used. We may need about 1-2 MB per kernel image + 1-2 MB for the initial utilities (shell, vgchange, mount). Michael -- Michael Marxmeier Marxmeier Software GmbH E-Mail: mike@msede.com Besenbruckstrasse 9 Voice : +49 202 2431440 42285 Wuppertal, Germany Fax : +49 202 2431420 http://www.msede.com/ ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [linux-lvm] Re: your mail 1999-02-17 13:13 ` Michael Marxmeier @ 1999-02-17 15:02 ` Thomas Haas 1999-02-17 16:13 ` [linux-lvm] LVM, MD and LLD Hwa Jin Bae 1999-02-17 21:49 ` [linux-lvm] Re: your mail Shawn Leas 1 sibling, 1 reply; 5+ messages in thread From: Thomas Haas @ 1999-02-17 15:02 UTC (permalink / raw) To: linux-lvm Hi I am using the md raid stuff (http://www.kernel.org/pub/linux/daemons/raid/) right now. For the md stuff both problems (booting md root device and shutdown) were solved in one way or another. The last time I checked initrd had been used for booting. I have not tracked how the shutdown problem has been resolved. Some cleanup may be moved into the unmount call. As I used AIX before I am waiting for LVM since a long time. I am glad it is finally here. Now, only JFS must be implemented. Anyone on more details on this (URLs)? tnx for the great work - tom Michael Marxmeier wrote: > Heinz wrote: > > /boot must be in a regular disk partition containing basic commands, > > device specials and LVM driver/commands. > > About 20-30MB should be sufficient to set this up. > > IMO this could even be less if initrd is used. > We may need about 1-2 MB per kernel image + 1-2 MB for the initial > utilities (shell, vgchange, mount). > > Michael > > -- > Michael Marxmeier Marxmeier Software GmbH > E-Mail: mike@msede.com Besenbruckstrasse 9 > Voice : +49 202 2431440 42285 Wuppertal, Germany > Fax : +49 202 2431420 http://www.msede.com/ -- * Thomas Haas <mailto:haas@softwired-inc.com> * SoftWired AG <http://www.softwired-inc.com/> * Technoparkstr. 1 *** CH-8005 Zurich *** +41-1-4452370 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [linux-lvm] LVM, MD and LLD 1999-02-17 15:02 ` Thomas Haas @ 1999-02-17 16:13 ` Hwa Jin Bae 0 siblings, 0 replies; 5+ messages in thread From: Hwa Jin Bae @ 1999-02-17 16:13 UTC (permalink / raw) To: linux-lvm Hello, I have been reading LVM and MD code. It looks like both of these can be merged eventually. The code changes in ll_rw_block for LVM and MD are similar, and it would be nice to have coherent single RAID subsystem in the kernel. Also, I'm not sure how many of you are aware of LLD work from MIT. LLD is "Logical Disk" which tries to solve problems that are usually solved by LFS or other extent based FS with journaling. The neat idea behind LLD is that rather than motifying the FS or writing a new FS to support large extent based I/O coupled with journaling, you can do this at block I/O level, under FS layer. The example software implementation is based on MINIX and a bit outdated. However, it seems reasonable to start looking into merging this into LVM framework. Of course, given the "free time" if I can manage, I would be very willing to help in the effort, since I am interested in such a thing. Finally, great work all you LVM folks! -- Hwa Jin Bae PSO Systems Inc hjb@pso.com http://www.pso.com ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [linux-lvm] Re: your mail 1999-02-17 13:13 ` Michael Marxmeier 1999-02-17 15:02 ` Thomas Haas @ 1999-02-17 21:49 ` Shawn Leas 1 sibling, 0 replies; 5+ messages in thread From: Shawn Leas @ 1999-02-17 21:49 UTC (permalink / raw) To: Michael Marxmeier; +Cc: mauelsha, marka, linux-lvm, mge On Wed, 17 Feb 1999, Michael Marxmeier wrote: > Heinz wrote: > > /boot must be in a regular disk partition containing basic commands, > > device specials and LVM driver/commands. > > About 20-30MB should be sufficient to set this up. > > IMO this could even be less if initrd is used. > We may need about 1-2 MB per kernel image + 1-2 MB for the initial > utilities (shell, vgchange, mount). How about a special boot area inside a boot-configured root volume group? That way, lilo could be modified to run the second stage boot loader which could then be as heavyweight as anyone needs it. Isn't this sort of how hpux handles it? -Shawn <=========== America Held Hostage ===========> Day 2219 for the poor and the middle class. Day 2238 for the rich and the dead. 703 days remaining in the Raw Deal. <============================================> ^ permalink raw reply [flat|nested] 5+ messages in thread
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[not found] <99021711471501.00456@piglet>
1999-02-17 13:05 ` [linux-lvm] Re: your mail Heinz Mauelshagen
1999-02-17 13:13 ` Michael Marxmeier
1999-02-17 15:02 ` Thomas Haas
1999-02-17 16:13 ` [linux-lvm] LVM, MD and LLD Hwa Jin Bae
1999-02-17 21:49 ` [linux-lvm] Re: your mail Shawn Leas
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