On 12/28/2012 05:47 PM, Chris Murphy wrote: > > On Dec 28, 2012, at 1:39 AM, Ed Greshko <[email protected]> wrote: > >> On 12/28/2012 12:31 AM, Chris Murphy wrote: >>> >>> If you mean you want a single partition consuming the whole disk, all of it >>> in the VG, but to specify LVs that don't use all of the space in the VG, no >>> you can't do that within anaconda. You'd need to do that in a shell first: >>> partition, make it a pv, add it to a VG, then run anaconda. Any mount >>> points you create will by default become LV's using that VG. >> >> Your last paragraph says it all.... "you can't do that in anaconda". >> *Previously*, you could…. > > It seems more likely that's incidental behavior, than designed behavior. It's > an installer. Its job is to install a system. > > >> >> From an F17 system .... >> >> [root@f17dt ~]# pvscan >> PV /dev/sda3 VG vg_A lvm2 [196.91 GiB / 28.31 GiB free] >> PV /dev/sda2 VG vg_B lvm2 [58.56 GiB / 14.59 GiB free] >> Total: 2 [255.47 GiB] / in use: 2 [255.47 GiB] / in no VG: 0 [0 ] >> [root@f17dt ~]# lvscan >> ACTIVE '/dev/vg_A/lv01' [97.66 GiB] inherit (/home) >> ACTIVE '/dev/vg_A/lv00' [1.97 GiB] inherit (swap) >> ACTIVE '/dev/vg_A/lv02' [68.97 GiB] inherit (/usr/local) >> ACTIVE '/dev/vg_B/lv01' [34.19 GiB] inherit (/opt) >> ACTIVE '/dev/vg_B/lv00' [9.78 GiB] inherit (/) > >> It was easy to create 2 PV's on one disk and then several LV's within the >> PV. As you can see, I've got free space on both PV's which can be added to >> what LV I want online. > > I see confusion. Do you realize you effectively have 10 partitions, that we > know of, on a single disk? What's the advantage of sda2 and sda3 being > separate instead of in a single VG? You're basically increasing your overall > system latency by having multiple PV's on a single spindle. In any case, this > is the domain of a different application, not an OS installer.
How does having two PVs on the same spindle increase latency? It certainly doesn't decrease it but it shouldn't make a difference whether you make two writes to a single PV or two different PVs in this case as these writes end up on the same spindle either way. Regards, Dennis -- test mailing list [email protected] To unsubscribe: https://admin.fedoraproject.org/mailman/listinfo/test
