Hi Jan, On Feb 5, 2007, at 12:36 PM, Jan Iven wrote: > On 05/02/07 16:39, Devin Bougie wrote: > .. > >> The 3ware controller splits this 6.82TB RAID volume into >> 2TB volumes (sd[c-f]) that we combine into one volume group. > .. > >> Please let me know if there's any other information we can >> provide. Any >> suggestions or help would be greatly appreciate. > > What is the physical extent size of your volume group? 32M (I think everything I didn't list is the default). > the default 32M > would limit you to ~2TB (~64k extents per volume group, see vgcreate > (1)). > > I believe the 2.4 kernels have a 2TB limit per block device. > http://www.redhat.com/rhel/details/limits/#five > agrees with this. Correct; which is why the 3ware controller splits the RAID array into 2TB volumes. The operating system sees 3ware array as three 2TB and one 800GB block devices. [root@lnx113 root]# vgdisplay vg1 --- Volume group --- VG Name vg1 VG Access read/write VG Status available/resizable VG # 1 MAX LV 256 Cur LV 2 Open LV 2 MAX LV Size 2 TB Max PV 256 Cur PV 4 Act PV 4 VG Size 6.82 TB PE Size 32 MB Total PE 223510 Alloc PE / Size 124800 / 3.81 TB Free PE / Size 98710 / 3.01 TB VG UUID Mcy66r-Dtge-05od-TAvJ-724U-0HZ1-DK4qgG [root@lnx113 root]# pvscan pvscan -- reading all physical volumes (this may take a while...) pvscan -- WARNING: physical volume "/dev/sda4" belongs to a meta device pvscan -- WARNING: physical volume "/dev/sdb4" belongs to a meta device pvscan -- ACTIVE PV "/dev/sdc" of VG "vg1" [2 TB / 0 free] pvscan -- ACTIVE PV "/dev/sdd" of VG "vg1" [2 TB / 195.94 GB free] pvscan -- ACTIVE PV "/dev/sde" of VG "vg1" [2 TB / 2 TB free] pvscan -- ACTIVE PV "/dev/sdf" of VG "vg1" [840.78 GB / 840.78 GB free] pvscan -- ACTIVE PV "/dev/md2" of VG "vg" [68.72 GB / 49.17 GB free] pvscan -- total: 7 [6.89 TB] / in use: 7 [6.89 TB] / in no VG: 0 [0] Devin