Re: [gentoo-user] Moving linux system to another partition
On Friday 08 June 2007 19:52, Hans-Werner Hilse wrote: Hi, On Sat, 09 Jun 2007 02:43:23 +1000 Tim Allingham [EMAIL PROTECTED] wrote: I generally prefer to do this with dd, from a remote environment dd if=/dev/source partition of=/dev/destination partition Remote Environment probably means a) read-only mounted root FS or b) a boot into another instance, e.g. a live-CD, right? If you're talking about just SSH'ing into the machine: That will probably cause the copy to be broken (if the machine has / still mounted r/w), at least an fsck would be needed. Also, this method will also need a bigger or equally sized new partition. If it's bigger, one also needs to resize the filesystem afterwards. How do you resize the fs? I was never comfortable trying this at home... but I have a feeling I might need to use it sooner or later. -- Regards, Mick pgphICPnZC4cj.pgp Description: PGP signature
Re: [gentoo-user] Moving linux system to another partition
Hi, On Mon, 11 Jun 2007 08:24:00 +0100 Mick [EMAIL PROTECTED] wrote: On Friday 08 June 2007 19:52, Hans-Werner Hilse wrote: Also, this method will also need a bigger or equally sized new partition. If it's bigger, one also needs to resize the filesystem afterwards. How do you resize the fs? I was never comfortable trying this at home... but I have a feeling I might need to use it sooner or later. This is file system specific. There's e.g. resize2fs, xfs_growfs and other programs for the other FS. Of course, there's no need to grow the filesystem, but you won't have more space than before because file systems don't usually adapt to partition size. -hwh -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Moving linux system to another partition
Hans-Werner Hilse wrote: Of course, there's no need to grow the filesystem, but you won't have more space than before because file systems don't usually adapt to partition size. I am confused as to what you mean here. It is my experience that resizing a file system that has been dd'ed to a new, larger partition will cause it to take up that entire new partition (which is desirable). Are you saying this is not the case? R -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Moving linux system to another partition
On Monday 11 June 2007, Randy Barlow wrote: Hans-Werner Hilse wrote: Of course, there's no need to grow the filesystem, but you won't have more space than before because file systems don't usually adapt to partition size. I am confused as to what you mean here. It is my experience that resizing a file system that has been dd'ed to a new, larger partition will cause it to take up that entire new partition (which is desirable). Are you saying this is not the case? No, he's saying that you don't *have* to resize the fs, but then all that happens is you have a (say) 60GB fs on a 100GB partition, wasting 40GB of disk space. He also say it would be nice to have an fs that dynamically resizes itself if it finds it's not using all of the partition, but that's not the usual way it works (if at all). Hans-Werner's post is correct but also in convulted language with a triple negative. Your original understanding is correct. alan -- Optimists say the glass is half full, Pessimists say the glass is half empty, Developers say wtf is the glass twice as big as it needs to be? Alan McKinnon alan at linuxholdings dot co dot za +27 82, double three seven, one nine three five -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Moving linux system to another partition
Hi, On Mon, 11 Jun 2007 10:18:27 -0500 Randy Barlow [EMAIL PROTECTED] wrote: Hans-Werner Hilse wrote: Of course, there's no need to grow the filesystem, but you won't have more space than before because file systems don't usually adapt to partition size. I am confused as to what you mean here. It is my experience that resizing a file system that has been dd'ed to a new, larger partition will cause it to take up that entire new partition (which is desirable). Are you saying this is not the case? Nope, I was merely saying that resizing is *not* a necessity, except you want to use the (larger) space of the partition. A filesystem doesn't really care for the size of the partition. That's what I wanted to express... just that it doesn't happen automatically, and on the other hand is not necessary in order to use the old data. -hwh -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Moving linux system to another partition
Am Samstag 09 Juni 2007 02:25 schrieb Albert Hopkins: On Fri, 2007-06-08 at 19:01 -0500, [EMAIL PROTECTED] wrote: On Fri Jun 8 16:38 , Dale [EMAIL PROTECTED] sent: Yeah, that's me, I do exactly the same until you issue the cp command where I do: $cd /mnt/oldstuff tar cvjpf /pathtosomewhere/mystuff.tbz ./ and then extract to the new directory. I do this out of habit mostly and, yes, it is a useless step unless you want to store a copy somewhere for whatever reason... --James The one thing I mentioned is that I actually pipe tar to tar (tar -c ... | tar -x ...) which seems even more useless, but as I said I'm used to doing some things out of habit. Then I thought about why: the '-a' flag is not available on all *nices... I believe it's a GNU extension. So I probably got used to using the tar trick on a non-GNU system and got used to it because it works whether I'm using Linux or not. But if you're on a Linux system (that has rsync installed) then rsync is probably the nicer option. It's got even more options than GNU's cp. I actually 'alias cp=rsync' on my Gentoo systems. 'dd' is good if you want to preserve filesystem/geometry but not good if you don't. -- Albert W. Hopkins I wouldn't recommend dd, either. Using dd you would preserve all the fragmentation of the old file system while cp, tar and rsync don't. pgp0R3RvZoldt.pgp Description: PGP signature
Re: [gentoo-user] Moving linux system to another partition
On 6/8/07, Aleksey Kunitskiy [EMAIL PROTECTED] wrote: Is it safe to move my linux system by using: #cp -rp /mnt/old_part /mnt/new_part and approriate changes in grub.conf/fstab on new system location ? cp -ax / /mnt/newroot cp -ax /dev/ /mnt/newroot Is always works for mine. Second line required in order to boot. -- Vladimir Rusinov GreenMice Solutions: IT-решения на базе Linux http://greenmice.info/
Re: [gentoo-user] Moving linux system to another partition
On Fri, 2007-06-08 at 20:52 +0200, Hans-Werner Hilse wrote: Hi, On Sat, 09 Jun 2007 02:43:23 +1000 Tim Allingham [EMAIL PROTECTED] wrote: I generally prefer to do this with dd, from a remote environment dd if=/dev/source partition of=/dev/destination partition Remote Environment probably means a) read-only mounted root FS or b) a boot into another instance, e.g. a live-CD, right? If you're talking about just SSH'ing into the machine: That will probably cause the copy to be broken (if the machine has / still mounted r/w), at least an fsck would be needed. Also, this method will also need a bigger or equally sized new partition. If it's bigger, one also needs to resize the filesystem afterwards. -hwh yeah that probably wasn't the best terminology to use, I was referring to liveCD/alternate OS as opposed to remote access signature.asc Description: This is a digitally signed message part
[gentoo-user] Moving linux system to another partition
Hi all, Is it safe to move my linux system by using: #cp -rp /mnt/old_part /mnt/new_part and approriate changes in grub.conf/fstab on new system location ? -- best regards, Aleksey V. Kunitskiy -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Moving linux system to another partition
On Freitag, 8. Juni 2007, Aleksey Kunitskiy wrote: Hi all, Is it safe to move my linux system by using: #cp -rp /mnt/old_part /mnt/new_part and approriate changes in grub.conf/fstab on new system location ? nope. cp -a if you really want to use copy. But doesn't kill that the ctime/mtime making uninstalling things a pain? When I moved around on harddisks some years ago, I followed some instructions found on the suse-hp. And they used tar. -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Moving linux system to another partition
On Friday 08 June 2007, Hemmann, Volker Armin wrote: On Freitag, 8. Juni 2007, Aleksey Kunitskiy wrote: Hi all, Is it safe to move my linux system by using: #cp -rp /mnt/old_part /mnt/new_part and approriate changes in grub.conf/fstab on new system location ? nope. cp -a if you really want to use copy. But doesn't kill that the ctime/mtime making uninstalling things a pain? No. cp -a is equivalent to cp -dpPR and from the man page: -p same as --preserve=mode,ownership,timestamps What the OP *will* have a problem with a copying /proc, /dev, /sys and other virtual filesystems. When I do this trick, I usually dd or tar or cp -a entire filesystems and then copy / with this trick: mount -o bind / /some/tmp/dir cp -a /some/tmp/dir /some/other/dir This ensures that only files actually on-disk are copied alan -- Optimists say the glass is half full, Pessimists say the glass is half empty, Developers say wtf is the glass twice as big as it needs to be? Alan McKinnon alan at linuxholdings dot co dot za +27 82, double three seven, one nine three five -- [EMAIL PROTECTED] mailing list
RE: [gentoo-user] Moving linux system to another partition
-Original Message- From: Hemmann, Volker Armin [mailto:[EMAIL PROTECTED] Sent: Saturday, June 09, 2007 12:19 AM To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Moving linux system to another partition On Freitag, 8. Juni 2007, Aleksey Kunitskiy wrote: Hi all, Is it safe to move my linux system by using: #cp -rp /mnt/old_part /mnt/new_part and approriate changes in grub.conf/fstab on new system location ? nope. cp -a if you really want to use copy. But doesn't kill that the ctime/mtime making uninstalling things a pain? When I moved around on harddisks some years ago, I followed some instructions found on the suse-hp. And they used tar. ***WARNING*** I am probably missing something, so beware. I am sure people with more experience will fill in the details, so don't try this till everyone else has a chance to chime in. :P I don't know all the details, but from what I understand basically boot into a live disk type environment, tar everything in a way that reserves permissions and all the file info, and then untar it in the new root directory. If grub.conf will be in a new location, then make sure to make the right Changes in grub. If you have a separate /boot parition, then that should be ok, just make the right changes in grub.conf. That SHOULD work. ^^; Make sure not to actually delete anything until you know it works. ^_^ -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Moving linux system to another partition
On Friday 08 June 2007 12:39, Aleksey Kunitskiy wrote: When I moved around on harddisks some years ago, I followed some instructions found on the suse-hp. And they used tar. Any helpful suggestions(links?) ? if you are doing it between different filesystems, keep in mind that some doesn't store the same informations about the files... and would be better if the filesystem from where you will copy, is mounted in read-only mode. if you are only aware about permissions, you can use tar -p but, if the destination filesystem is the same or unix-like (not vfat or ntfs) i'd prefer using rsync -a to doing this job. but if you have any doubt... the manual is your friend. ;) man tar man rsync man cp []'s .m -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Moving linux system to another partition
On Fri, 2007-06-08 at 17:48 +0200, Alan McKinnon wrote: What the OP *will* have a problem with a copying /proc, /dev, /sys and other virtual filesystems. When I do this trick, I usually dd or tar or cp -a entire filesystems and then copy / with this trick: mount -o bind / /some/tmp/dir cp -a /some/tmp/dir /some/other/dir This ensures that only files actually on-disk are copied You could also pass, '-x' to cp and rsync or '--one-file-system' to tar. -- Albert W. Hopkins -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Moving linux system to another partition
On Friday 08 June 2007 12:54, Albert Hopkins wrote: On Fri, 2007-06-08 at 18:05 +0300, Aleksey Kunitskiy wrote: Hi all, Is it safe to move my linux system by using: #cp -rp /mnt/old_part /mnt/new_part and approriate changes in grub.conf/fstab on new system location ? 'cp -a' (or better rsync -a) is probably better than 'cp -rp' for that purpose. But what I usually do is 'tar -c ... | tar -x ...'. I don't really know if it's better or not than using 'cp'. I just do it out of habit. if you do tar in this way, is better to use tar -pc ... | tar -px ... []'s .m -- [EMAIL PROTECTED] mailing list
RE: [gentoo-user] Moving linux system to another partition
-Original Message- From: Alan McKinnon [mailto:[EMAIL PROTECTED] Sent: Saturday, June 09, 2007 12:48 AM To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Moving linux system to another partition On Friday 08 June 2007, Hemmann, Volker Armin wrote: On Freitag, 8. Juni 2007, Aleksey Kunitskiy wrote: Hi all, Is it safe to move my linux system by using: #cp -rp /mnt/old_part /mnt/new_part and approriate changes in grub.conf/fstab on new system location ? nope. cp -a if you really want to use copy. But doesn't kill that the ctime/mtime making uninstalling things a pain? No. cp -a is equivalent to cp -dpPR and from the man page: -p same as --preserve=mode,ownership,timestamps What the OP *will* have a problem with a copying /proc, /dev, /sys and other virtual filesystems. When I do this trick, I usually dd or tar or cp -a entire filesystems and then copy / with this trick: mount -o bind / /some/tmp/dir cp -a /some/tmp/dir /some/other/dir This ensures that only files actually on-disk are copied alan Is it possible to handle the tar process from inside a liveCD environment, and just tar the mount points (i.e. empty directories) for the virtual file systems instead of trying to tar the virtaul file systems themselves? Afterall, they are recreated at boot time, aren't they? -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Moving linux system to another partition
On Fri, 2007-06-08 at 18:05 +0300, Aleksey Kunitskiy wrote: Hi all, Is it safe to move my linux system by using: #cp -rp /mnt/old_part /mnt/new_part and approriate changes in grub.conf/fstab on new system location ? 'cp -a' (or better rsync -a) is probably better than 'cp -rp' for that purpose. But what I usually do is 'tar -c ... | tar -x ...'. I don't really know if it's better or not than using 'cp'. I just do it out of habit. -- Albert W. Hopkins -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Moving linux system to another partition
On Friday 08 June 2007 18:59, Albert Hopkins wrote: You could also pass, '-x' to cp and rsync or '--one-file-system' to tar. Thanks. I found good howto [1], chapter #7 describes this problem [1] http://www.tldp.org/HOWTO/Hard-Disk-Upgrade/ -- best regards, Aleksey V. Kunitskiy -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Moving linux system to another partition
On Fri, 2007-06-08 at 17:48 +0200, Alan McKinnon wrote: On Friday 08 June 2007, Hemmann, Volker Armin wrote: On Freitag, 8. Juni 2007, Aleksey Kunitskiy wrote: Hi all, Is it safe to move my linux system by using: #cp -rp /mnt/old_part /mnt/new_part and approriate changes in grub.conf/fstab on new system location ? nope. cp -a if you really want to use copy. But doesn't kill that the ctime/mtime making uninstalling things a pain? No. cp -a is equivalent to cp -dpPR and from the man page: -p same as --preserve=mode,ownership,timestamps What the OP *will* have a problem with a copying /proc, /dev, /sys and other virtual filesystems. When I do this trick, I usually dd or tar or cp -a entire filesystems and then copy / with this trick: mount -o bind / /some/tmp/dir cp -a /some/tmp/dir /some/other/dir This ensures that only files actually on-disk are copied alan -- Optimists say the glass is half full, Pessimists say the glass is half empty, Developers say wtf is the glass twice as big as it needs to be? Alan McKinnon alan at linuxholdings dot co dot za +27 82, double three seven, one nine three five I generally prefer to do this with dd, from a remote environment dd if=/dev/source partition of=/dev/destination partition Tim Allingham tim -at- datafirst-it.com.au signature.asc Description: This is a digitally signed message part
Re: [gentoo-user] Moving linux system to another partition
Mauro Faccenda wrote: On Friday 08 June 2007 12:54, Albert Hopkins wrote: On Fri, 2007-06-08 at 18:05 +0300, Aleksey Kunitskiy wrote: Is it safe to move my linux system by using: #cp -rp /mnt/old_part /mnt/new_part 'cp -a' (or better rsync -a) is probably better than 'cp -rp' for that purpose. But what I usually do is 'tar -c ... | tar -x ...'. if you do tar in this way, is better to use tar -pc ... | tar -px ... The -p option only does something when extracting an archive, so that first -p is pointless. Better use 'tar' instead of 'cp -a', though, as it's much faster when copying many little files. cd /sourcedir tar -cf - . | (cd /destdir; tar -xpvf -) Benno -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Moving linux system to another partition
Hi, On Sat, 09 Jun 2007 02:43:23 +1000 Tim Allingham [EMAIL PROTECTED] wrote: I generally prefer to do this with dd, from a remote environment dd if=/dev/source partition of=/dev/destination partition Remote Environment probably means a) read-only mounted root FS or b) a boot into another instance, e.g. a live-CD, right? If you're talking about just SSH'ing into the machine: That will probably cause the copy to be broken (if the machine has / still mounted r/w), at least an fsck would be needed. Also, this method will also need a bigger or equally sized new partition. If it's bigger, one also needs to resize the filesystem afterwards. -hwh -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Moving linux system to another partition
Alan McKinnon wrote: On Friday 08 June 2007, Hemmann, Volker Armin wrote: On Freitag, 8. Juni 2007, Aleksey Kunitskiy wrote: Hi all, Is it safe to move my linux system by using: #cp -rp /mnt/old_part /mnt/new_part and approriate changes in grub.conf/fstab on new system location ? nope. cp -a if you really want to use copy. But doesn't kill that the ctime/mtime making uninstalling things a pain? No. cp -a is equivalent to cp -dpPR and from the man page: -p same as --preserve=mode,ownership,timestamps What the OP *will* have a problem with a copying /proc, /dev, /sys and other virtual filesystems. When I do this trick, I usually dd or tar or cp -a entire filesystems and then copy / with this trick: mount -o bind / /some/tmp/dir cp -a /some/tmp/dir /some/other/dir This ensures that only files actually on-disk are copied alan This is something I have done several times. This is how I do it. Boot the Gentoo CD or some other live CD, Knoppix should work. After you get booted up, mount the partitions, old and new, then use this command: cp -av /path/to/old /path/to/new and sit back and watch it all scroll by. It may take a good while depending on how much stuff you have to copy. I'm not saying that someone else doesn't have a better idea. I have seen where people tar the stuff then untar it to the new drive. To me, it is a useless step. What I use has worked for me every time and I have done it quite a bit. I hope that helps. Dale :-) :-) :-) :-)
Re: [gentoo-user] Moving linux system to another partition
On Fri Jun 8 16:38 , Dale [EMAIL PROTECTED] sent: This is something I have done several times. This is how I do it. Boot the Gentoo CD or some other live CD, Knoppix should work. After you get booted up, mount the partitions, old and new, then use this command: cp -av /path/to/old /path/to/new and sit back and watch it all scroll by. It may take a good while depending on how much stuff you have to copy. I'm not saying that someone else doesn't have a better idea. I have seen where people tar the stuff then untar it to the new drive. To me, it is a useless step. What I use has worked for me every time and I have done it quite a bit. Yeah, that's me, I do exactly the same until you issue the cp command where I do: $cd /mnt/oldstuff tar cvjpf /pathtosomewhere/mystuff.tbz ./ and then extract to the new directory. I do this out of habit mostly and, yes, it is a useless step unless you want to store a copy somewhere for whatever reason... --James -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Moving linux system to another partition
On Fri Jun 8 12:09 , Benno Schulenberg [EMAIL PROTECTED] sent: The -p option only does something when extracting an archive, so that first -p is pointless. Cool. I thought you were mistaken however, upon consulting the man page, you are absolutely correct. Thanks for that. --James -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Moving linux system to another partition
On Fri, 2007-06-08 at 19:01 -0500, [EMAIL PROTECTED] wrote: On Fri Jun 8 16:38 , Dale [EMAIL PROTECTED] sent: Yeah, that's me, I do exactly the same until you issue the cp command where I do: $cd /mnt/oldstuff tar cvjpf /pathtosomewhere/mystuff.tbz ./ and then extract to the new directory. I do this out of habit mostly and, yes, it is a useless step unless you want to store a copy somewhere for whatever reason... --James The one thing I mentioned is that I actually pipe tar to tar (tar -c ... | tar -x ...) which seems even more useless, but as I said I'm used to doing some things out of habit. Then I thought about why: the '-a' flag is not available on all *nices... I believe it's a GNU extension. So I probably got used to using the tar trick on a non-GNU system and got used to it because it works whether I'm using Linux or not. But if you're on a Linux system (that has rsync installed) then rsync is probably the nicer option. It's got even more options than GNU's cp. I actually 'alias cp=rsync' on my Gentoo systems. 'dd' is good if you want to preserve filesystem/geometry but not good if you don't. -- Albert W. Hopkins -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Moving linux system to another partition
On Fri Jun 8 18:25 , Albert Hopkins [EMAIL PROTECTED] sent:
On Fri, 2007-06-08 at 19:01 -0500, [EMAIL PROTECTED] wrote:
On Fri Jun 8 16:38 , Dale [EMAIL PROTECTED] sent:
Yeah, that's me, I do exactly the same until you issue the cp command where
I do:
$cd /mnt/oldstuff tar cvjpf /pathtosomewhere/mystuff.tbz ./
and then extract to the new directory. I do this out of habit mostly and,
yes,
it is a useless step unless you want to store a copy somewhere for whatever
reason...
--James
The one thing I mentioned is that I actually pipe tar to tar (tar -c ...
| tar -x ...) which seems even more useless, but as I said I'm used to
doing some things out of habit. Then I thought about why: the '-a' flag
is not available on all *nices... I believe it's a GNU extension. So I
probably got used to using the tar trick on a non-GNU system and got
used to it because it works whether I'm using Linux or not. But if
you're on a Linux system (that has rsync installed) then rsync is
probably the nicer option. It's got even more options than GNU's cp. I
actually 'alias cp=rsync' on my Gentoo systems.
Ha. This is a good day. I have to laugh at myself for not utilizing rsync
more;
for the last few years I've just been using rsync to backup/restore my /home and
key config files to my fileserver (while at home). Never even considered using
it for local operations. Nice. I have the habit, also, of using the most basic
stuff since I'm usually on all manner of UNIX{like} boxes during the day.
Thanks,
--James
--
[EMAIL PROTECTED] mailing list
