Re: [gentoo-user] Upgrade query
On Thu, 21 Jul 2011 20:01:31 +0200 Volker Armin Hemmann volkerar...@googlemail.com wrote: On Thursday 21 July 2011 10:01:10 j...@jdm.myzen.co.uk wrote: A little advice please? I am about to build a new box going from athlon dual core to phenom six core. Including new sata drives and motherboard. I was going to clone all my partitions and the re emerged all packages with march native Firstly would you reccommend cloning and if so what is best technology? Second is a complete reinstall a better option or safer? are you using ACLs? if not a good old cp -auv is sufficient. But.. why clone the system? This is a good chance to get rid of cruft and forgotten packages. A clean installation (and copied /etc) might not be a bad choice. Thanks Gentoo. A combination of a new install, rsyncing all personal data, distfiles, /etc has worked wonders. Its nice to see that it is quicker to install Gentoo and get it up and running pretty much as previously than installing another well known operating system which took hours to download updates and hours of searching the web for right drivers. And this is totally free. LONG LIVE GENTOO
Re: [gentoo-user] Upgrade query
On Thursday, July 21 at 10:01 (+), j...@jdm.myzen.co.uk said: A little advice please? I am about to build a new box going from athlon dual core to phenom six core. Including new sata drives and motherboard. I was going to clone all my partitions and the re emerged all packages with march native Firstly would you reccommend cloning and if so what is best technology? When I move to a different machine, I just * boot into a live cd * back up all the partitions with rsync (or use tar or similar if you need compression) to an external (USB) drive. * boot new machine into livcd * repartion, copy backed up files * install bootloader (and reconfigure/build kernel if necessary) If both source and target are on the same network you can probably also get away with rsync'ing over the LAN instead of using an external drive. As for what technology is best, they are not going to make a whole lot of difference, IMO. I find rsync/cp easier to work with (you can manipulate files before copying them to the new box). tar is more efficient if you need compression. dd, would be the least efficient in my opinion, because it's going to clone the entire partition, including unused blocks, when you're really only concerned about the files. Tools like partimage, etc. can clone a partition smartly but I tend to use those tools less often as I'm really only concerned about the files, not the partitions. Unless your source and target partitions are going to have the exact same geometry, I don't see the benefit if cloning partitions. Just my 2¢ -a
Re: [gentoo-user] Upgrade query
Am 21.07.2011 12:01, schrieb j...@jdm.myzen.co.uk: A little advice please? I am about to build a new box going from athlon dual core to phenom six core. Including new sata drives and motherboard. I was going to clone all my partitions and the re emerged all packages with march native Firstly would you reccommend cloning and if so what is best technology? Second is a complete reinstall a better option or safer? Cloning works fairly well. Especially for architectures that are so close to each other as Athlon X2 and Phenom. I've done it for an upgrade from one of the original Athlon 64 to a Phenom just a few months ago. Just make sure your kernel contains all necessary drivers. Also, udev will usually detect your network interfaces as new interfaces and give them different numbers (eth1 instead of eth0 and so on). Regards, Florian Philipp signature.asc Description: OpenPGP digital signature
Re: [gentoo-user] Upgrade query
Thanks. Rsync sounds like a good option as I can boot pc with old hard disks installed. I assume that rsync works ok with ntfs? Jdm Sent from my BlackBerry® smartphone on O2 -Original Message- From: Albert Hopkins mar...@letterboxes.org Date: Thu, 21 Jul 2011 06:18:53 To: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Upgrade query On Thursday, July 21 at 10:01 (+), j...@jdm.myzen.co.uk said: A little advice please? I am about to build a new box going from athlon dual core to phenom six core. Including new sata drives and motherboard. I was going to clone all my partitions and the re emerged all packages with march native Firstly would you reccommend cloning and if so what is best technology? When I move to a different machine, I just * boot into a live cd * back up all the partitions with rsync (or use tar or similar if you need compression) to an external (USB) drive. * boot new machine into livcd * repartion, copy backed up files * install bootloader (and reconfigure/build kernel if necessary) If both source and target are on the same network you can probably also get away with rsync'ing over the LAN instead of using an external drive. As for what technology is best, they are not going to make a whole lot of difference, IMO. I find rsync/cp easier to work with (you can manipulate files before copying them to the new box). tar is more efficient if you need compression. dd, would be the least efficient in my opinion, because it's going to clone the entire partition, including unused blocks, when you're really only concerned about the files. Tools like partimage, etc. can clone a partition smartly but I tend to use those tools less often as I'm really only concerned about the files, not the partitions. Unless your source and target partitions are going to have the exact same geometry, I don't see the benefit if cloning partitions. Just my 2¢ -a
Re: [gentoo-user] Upgrade query
j...@jdm.myzen.co.uk writes: A little advice please? I am about to build a new box going from athlon dual core to phenom six core. Including new sata drives and motherboard. I was going to clone all my partitions and the re emerged all packages with march native Firstly would you reccommend cloning and if so what is best technology? I'd plug the new system drive into the old PC and clone with dd. You can even make the partitions larger and use resize2fs (in case of ext3/4) to enlarge the space after cloning. Once caveat: Your new SATA drives are probably using a block size of 4K instead of 512 bytes, internally. To the OS they still look like they have 512 bytes. But when the partitions are not aligned to 4K boundaries (and I think this is still the case when using fdisk), there is a big performance loss. I also would make sure the whole drive is being written to once, in order to detect bad blocks. badblocks -sw device will do this. Second is a complete reinstall a better option or safer? I'd say just clone it. Remove your /etc/udev/rules.d/*-persistent-*.rules files, so your network interfaces will not be renamed from eth0 to eth1. If you change your CFLAGS, emerge -e world. I'm not sure if you better emerge -e system before (once or even twice) so the toolchain is already compiled with the new settings, maybe someone else will say something about this. Wonko
Re: [gentoo-user] Upgrade query
On Thursday, July 21 at 11:10 (+), j...@jdm.myzen.co.uk said: Well, depends on your definition of works. AFAIK linux does not expose the NFTS permission system fully, because they are very different and there is no 1:1 mapping between them. So while the *data* may be copied over, the permissions will likely only be copied as far as how the linux filesystem layer sees them, and may not be preserved 100%. There are NTFS tools afaik though, (ntfsclone). Since I don't actually use NTFS for anything, someone else may better be able to assist.
Re: [gentoo-user] Upgrade query
On Thursday 21 July 2011 12:20:30 Florian Philipp wrote:
Also, udev will usually detect your network interfaces as new interfaces
and give them different numbers (eth1 instead of eth0 and so on).
You can solve this by deleting the respective entries in the udev config:
**
$ cat /etc/udev/rules.d/70-persistent-net.rules
# This file was automatically generated by the /lib64/udev/write_net_rules
# program run by the persistent-net-generator.rules rules file.
#
# You can modify it, as long as you keep each rule on a single line.
# PCI device 0x1234:0x1234 (eth-device)
SUBSYSTEM==net, DRIVERS==?*, ATTR{address}==00:11:22:33:44:55,
KERNEL==eth*, NAME=eth0
***
Removing this file or just the entries should force udev to reuse the network-
device-names.
--
Joost
Re: [gentoo-user] Upgrade query
On Thursday 21 July 2011 10:01:10 j...@jdm.myzen.co.uk wrote: A little advice please? I am about to build a new box going from athlon dual core to phenom six core. Including new sata drives and motherboard. I was going to clone all my partitions and the re emerged all packages with march native Firstly would you reccommend cloning and if so what is best technology? Second is a complete reinstall a better option or safer? are you using ACLs? if not a good old cp -auv is sufficient. But.. why clone the system? This is a good chance to get rid of cruft and forgotten packages. A clean installation (and copied /etc) might not be a bad choice. -- #163933
