size of a PV > 2TB possible? (kernel with LBD support)
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Dear all!
I'm sorry I have to ask this question to this mailing list, but I have not been able to find sufficient and conclusive informaiton on the web. The mailing-list archive at redhat seems not to be searchable.
What is the maximum size of a PV in LVM2?
I run linux 2.6.24 kernel (Ubuntu server 8.04 LTS, 32bit i386) with lvm2 2.02.26 and mdadm 2.6.3.
The kernel has CONFIG_LBD=y in its configuration.
I currently use a 2TB (just under 2TB, 1.98TB actually) raid5 array /dev/mdN as the one and only PV in a VG. I would like to grow the array by addition of another disk to 3TB and then expand the PV.
As far as I understand mdadm, on a kernel with LBD support it should be able to create a blockdevice >2TB, but I am not sure that LVM2 will accept it as a PV.
The LVM2-Howto on TLDP (http://tldp.org/HOWTO/LVM-HOWTO/lvm2faq.html)
confirms that LVs can be >2TB (16TB on 32bit OS, 8EB on 64bit OS), but says nothing at all about PVs. Could somebody add that information?
thanx for support
kind regards,
Sulla
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.2.1 (MingW32)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/
iD8DBQFLPxplR6b2EdogPFsRApOQAKCq5lWWCZEU3lOqDN0yNwtjSWTx/wCfb7Bu m2SeTwsAeRU3008a1RvWBC8=
=IBoj
-----END PGP SIGNATURE-----
Yes, PV's can be larger than 2TiB. I currently have PV's around 5.46TiB here but have had them up to 10TiB on other machines. Don't know what the max size is though.
Steve
Quoted 59 lines · Sulla
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1Dear all!
I'm sorry I have to ask this question to this mailing list, but I have not been able to find sufficient and conclusive informaiton on the web. The mailing-list archive at redhat seems not to be searchable.
What is the maximum size of a PV in LVM2?
I run linux 2.6.24 kernel (Ubuntu server 8.04 LTS, 32bit i386) with lvm2 2.02.26 and mdadm 2.6.3.
The kernel hasCONFIG_LBD=yin its configuration.I currently use a 2TB (just under 2TB, 1.98TB actually) raid5 array
/dev/mdNas the one and only PV in a VG. I would like to grow the array by addition of another disk to 3TB and then expand the PV.As far as I understand mdadm, on a kernel with LBD support it should be able to create a blockdevice>2TB, but I am not sure that LVM2 will accept it as a PV.
The LVM2-Howto on TLDP (http://tldp.org/HOWTO/LVM-HOWTO/lvm2faq.html)
confirms that LVs can be>2TB (16TB on 32bit OS, 8EB on 64bit OS), but says nothing at all about PVs. Could somebody add that information?thanx for support
kind regards,
Sulla-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.2.1 (MingW32)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/iD8DBQFLPxplR6b2EdogPFsRApOQAKCq5lWWCZEU3lOqDN0yNwtjSWTx/wCfb7Bu m2SeTwsAeRU3008a1RvWBC8=
=IBoj
-----END PGP SIGNATURE-----_______________________________________________
linux-lvm mailing list
[email protected]
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/