fc2 & lvm2 MAX LV
From "On Fri, Mar 26, 2004 at 10:16:44AM -0600, AJ Lewis wrote:" <snip>
The PE size limitation isn't present in lvm2 (The version of lvm that works in 2.6) if you use the native lvm2 format. So you should be able to create larger than 2TB LVs with LVM2. Just FYI.
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I recently setup a test box with FC1 and lvm1 with a PE size of 32MB yielding a MAX LV of 2TB. I then installed FC2 on that box, thinking that if I were to specify PE of 64MB I could get a 4TB limit.
However, running vgdisplay seems to be telling me that I only have a MAX LV of 255 GB, as follows:
# vgdisplay --- Volume group --- VG Name Volume00 System ID Format lvm2 Metadata Areas 2 Metadata Sequence No 3 VG Access read/write VG Status resizable MAX LV 255 Cur LV 2 Open LV 2 Max PV 255 Cur PV 2 Act PV 2 VG Size 220.50 GB PE Size 64.00 MB Total PE 3528 Alloc PE / Size 3526 / 220.38 GB Free PE / Size 2 / 128.00 MB
What does this mean? Do I have more LV space available, but it only tells me what my current limit is based on installed drives?
Should I reinstall with at smaller, and presumably more efficient, PE Size?
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Dan Fleischer Bank & Trust Co. PO Box 467 900 W. Main St. Carlinville, IL 62626 Ph. 217-854-3554 Fax 217-854-3244 http://www.bank-and-trust.com
Quoted 3 lines · Dan Fleischer
a MAX LV of 255 GB, as follows:
MAX LV 255
A configurable maximum of 255 logical volumes, not GB.
Try out
vgchange -l
Alasdair
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Quoted 2 lines · Dan Fleischer
Should I reinstall with at smaller, and presumably more efficient, PE Size?
A bigger PE size is more efficient for tools performance. PE size is irrelevant to I/O performance.
LVs should go up to 16TB OK, though filesystems might not.
Alasdair
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