On Sat, 2006-07-08 at 14:13 -0400, William L. Maltby wrote:
On Sat, 2006-07-08 at 21:01 +0300, Itay wrote:
On Sat, 2006-07-08 at 19:48 +0300, Itay wrote:
From: William L. Maltby BillsCentOS@triad.rr.com
<snip>
Us n00bs have to stick together here! :-)
Yup!
And being n00bs, we are permitted to expound at length with guesses about what might be going on, giving the wizened cranky old pros someone to pick on and soothe their savage egos! ;-) I've not read any devel docs yet, so there may be a lot more going on.
From rom my reading, I think the device mapper (?) needs to see a partition 86 to know to look inside the partition for the meta-data (placed there by pvcreate/lvcreate?) that is used to generate the devices. My *guess* is if no type 86 is found it means no pvdata is garnered and no /dev/mapper/VolGroup* and no /dev/VolGroup* symlinks are made (or wrong ones are made or left over from elsewhere?).
I think if it finds one or more type 86 partitions, it builds all the /dev/mapper lvms and symlinks it needs. This includes proper association of minor device to vg so you don have multiple physical vols switching places on you every time you boot.
Anyway, that's my SWAG (Scientific Wild-Assed Guess) about what's going on.
This is far-far better than my guess. I understand very little of all this volume management and device mapping.
When it's all working, be sure and post with a "[SOLVED]" added to the subject and a summary of your fixes as a courtesy to other list members and future searchers.
Sure.
Itay