evms or lvm?
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
I'm planing to move to 2.6x kernels and I don't know what should I use, lvm or evms, any 1 could help me to decide?
I've heard that evms will not continue with 2.6, is it true? Best regards
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.2 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
iD8DBQE/RzR+kj4I0Et8EMgRAuV6AKDr3PioD0U+cdpQBJAOYpy2uzYLrQCg0UWt tGyRpNsrIg2ET1TAwtMm9Pw=
=+pRf
-----END PGP SIGNATURE-----
Quoted 5 lines · Voicu Liviu
I'm planing to move to 2.6x kernels and I don't know what should I use, lvm or evms, any 1 could help me to decide?
I've heard that evms will not continue with 2.6, is it true? Best regards
2.6.0 will have many changes with respect to LVM and EVMS. LVM is updated to newer version 2 (LVM2), based on DM (Device Mapper), sort of a simplified in-kernel LVM that just handles discovering the drives. Updated userspace utilities (LVM2) are already available to drive this.
On the other part, EVMS was completely redesigned. Former EVMS implementation was duplicating too much code, and in general it was regarded as a bad implementation on a very good idea, so the people at IBM in charge on EVMS development took what it look to everyone as a very clever move, and for 2.6.x they implemented EVMS on top of DM. User space utilities for EVMS are (from the user's point of view) the same as before, but now the inner details are different: no reimplementation of software RAID, no reimplementation of LVM, etc.
Have a look at both projects websites to get more accurate and detailled information about them:
http://evms.sourceforge.net/
http://www.sistina.com/products_lvm.htm
Regards,
Signature · 2 lines
Jose Luis Domingo Lopez Linux Registered User #189436 Debian Linux Sid (Linux 2.6.0-test3-mm2)
Quoted 5 lines
2.6.0 will have many changes with respect to LVM and EVMS. LVM is updated to newer version 2 (LVM2), based on DM (Device Mapper), sort of a simplified in-kernel LVM that just handles discovering the drives. Updated userspace utilities (LVM2) are already available to drive this.
Quoted 8 lines
On the other part, EVMS was completely redesigned. Former EVMS implementation was duplicating too much code, and in general it was regarded as a bad implementation on a very good idea, so the people at IBM in charge on EVMS development took what it look to everyone as a very clever move, and for 2.6.x they implemented EVMS on top of DM. User space utilities for EVMS are (from the user's point of view) the same as before, but now the inner details are different: no reimplementation of software RAID, no reimplementation of LVM, etc.
I noticed the kernel doesn't have LVM as an option now. Does both projects just use the DM from userspace?
Signature · 1 line
Lab tests show that use of micro$oft causes cancer in lab animals
Quoted 2 lines · Previously Wakko Warner
I noticed the kernel doesn't have LVM as an option now. Does both projects just use the DM from userspace?
Yes.
Wichert.
Signature · 2 lines
Wichert Akkerman <[email protected]> It is simple to make things. http://www.wiggy.net/ It is hard to make things simple.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Wichert Akkerman wrote:
| Previously Wakko Warner wrote: | |>I noticed the kernel doesn't have LVM as an option now. Does both projects |>just use the DM from userspace? | | | Yes.
Ok, what this means? Just to be sure I've understand... Thanks
| | Wichert. |
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.2 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
iD8DBQE/R4c0kj4I0Et8EMgRAnkjAJ9L890j4QuUeVkV1TM+8oWzpKdEfQCgqjk9 vkewfIk4aO9lThUnc2W2hgs=
=j6tc
-----END PGP SIGNATURE-----
Quoted 3 lines · Voicu Liviu
Ok, what this means? Just to be sure I've understand... Thanks
In 2.6.x there is just support for Device Mapper. From "Multi-device support (RAID and LVM)" you can see:
x x <M> Device mapper support
x x [*] ioctl interface version 4
Both LVM2 and EVMS (from version 2.0.0) use Device Mapper. For LVM2 you just need to get updated userspace tools from your vendor or directly from www.sistina.com. For EVMS to work, see:
http://evms.sourceforge.net/install-2.0.html
Signature · 2 lines
Jose Luis Domingo Lopez Linux Registered User #189436 Debian Linux Sid (Linux 2.6.0-test4)