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RE: [linux-lvm] Limits

Title: Limits

Here is your answer taken from a document that helped me with the same question…


The extent size determines the maximum size that a logical volume can be. As you can see from the above output, a 4 MB extent size imposes a logical volume size limitation of 256 Gigabytes, which is an easily attainable logical volume size if you're adding several high-capacity drives to your volume group. If your volumes could end up being greater than 256 GB apiece, I recommend specifying a larger extent size at vgcreate time. Extents can range anywhere from 8 KB to 512 MB, and must always be a multiple of two. By increasing the extent size above 4 MB, the maximum physical volume size will be scaled accordingly, up to a maximum of 1 Petabyte (although the current real-world size limit is 2 Terabytes on x86 systems). For example, if I wanted to create a volume group with 32 Megabyte extents, I'd type:

# vgcreate -s 32M main /dev/hda5





-----Original Message-----
From: Luke Reeves [mailto:luke oceanlake com]
Sent: Friday, September 27, 2002 2:55 PM
To: 'linux-lvm sistina com'
Subject: [linux-lvm] Limits


What are the current limits (specifically on LVM 1.0.5) of each volume/disk?  I read 255GB in one of the docs.  Can anyone fill me in?  Thanks.

        Luke Reeves
luke oceanlake com

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