256Gb limit problem
Hello I've got a problem using LVM
I want to do a virtual group of more than 256 GB and when i create a virtual group it tells me that there 's a limit to 256 Gb How can i pass it ?
Is it a Ext3 problem or LVM one ?
Thanks a Lot
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I want to do a virtual group of more than 256 GB and when i create a virtual group it tells me that there 's a limit to 256 Gb
Hi!
No, there is no limit in lvm or ext2 at 256GB. You just will have to increase the
size of your physical extents. This is done when you create the volume group
(man vgcreate), the PE-size is defined with -s (as_many_MB_as_you_want). Take a look at the manpage (man vgcreate).
My configuration (LVM on Serveraid/RAID5, reiserfs):
/home/lars # vgdisplay
--- Volume group ---
VG Name RAID VG Access read/write VG Status available/resizable VG # 0 MAX LV 255 Cur LV 9 Open LV 9 MAX LV Size 1023.97 GB Max PV 255 Cur PV 2 Act PV 2 VG Size 410.14 GB PE Size 16.00 MB Total PE 26249 Alloc PE / Size 25408 / 397.00 GB Free PE / Size 841 / 13.14 GB VG UUID xxxxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xxxxxx
So, you see, I have a physical extent size of 16MB, and could have one a volume of one Terabyte - if I just had enough disks ;-) You also see that I don't
have all PEs in use, in fact, there are 13,14 GB PEs "free" (that's not the free
space on the filesystems, but the space on the volume group not allocated for
use by LVs). That's because I have to create Logical Volumes from time to time
if a department here needs space for a project.
Take a look at the documentation on www.sistina.com!
CU Lars.
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