[gentoo-user] How can I move system to new disk?

[gentoo-user] How can I move system to new disk?

[Jarry]

Hi, I'm facing this problem:

I want to exchange hard-drive in my computer for other, bigger
one. I do not want to add new hard-drive somewhere on mount-point
permanently, I just want to copy everything from the old drive
to the new one and then get rid of the old one. And of course,
I'd like to use my computer as before. What is the best (maybe
I should ask for safest) way to acomplish this?

First I thought about "cp -a". But I'm not sure which directories
I should skip (/proc, maybe some other like /dev?). And I do not
know how cp handles links (if I first copy link and later target,
where is the link pointing? to the original file or its copy?).

Maybe dump/restore is better solution? Or something else?

Jarry

-- 
_______________________________________________________________
This mailbox accepts e-mails only from selected mailing-lists!
Everything else is considered to be spam and therefore deleted.

Re: [gentoo-user] How can I move system to new disk?

[Hazen Valliant-Saunders]

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Tar is your friend and ally.

1. install and Mount the disk to a mount point.
2. Use tar in for it's intended purpose
https://help.ubuntu.com/community/BackupYourSystem/TAR
3. remove old drive, & configure the new one as your primary.
4. get a drink.

On Fri, Jan 15, 2010 at 12:33 PM, Jarry <mr.jarry@gmail.com> wrote:

> Hi, I'm facing this problem:
>
> I want to exchange hard-drive in my computer for other, bigger
> one. I do not want to add new hard-drive somewhere on mount-point
> permanently, I just want to copy everything from the old drive
> to the new one and then get rid of the old one. And of course,
> I'd like to use my computer as before. What is the best (maybe
> I should ask for safest) way to acomplish this?
>
> First I thought about "cp -a". But I'm not sure which directories
> I should skip (/proc, maybe some other like /dev?). And I do not
> know how cp handles links (if I first copy link and later target,
> where is the link pointing? to the original file or its copy?).
>
> Maybe dump/restore is better solution? Or something else?
>
> Jarry
>
> --
> _______________________________________________________________
> This mailbox accepts e-mails only from selected mailing-lists!
> Everything else is considered to be spam and therefore deleted.
>
>


-- 
Hazen Valliant-Saunders
IT/IS Consultant
(613) 355-5977

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Re: [gentoo-user] How can I move system to new disk?

[Hazen Valliant-Saunders]

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remember to use --exclude to "exclude" your new drive's mounted point. \

and to use a pipe
so your command would look like:

root@yoursystem #cd /
root@yoursystem #tar -cvpzf - -–exclude=/- --exclude=/mnt/newdrive | cd
/mnt/newdrive (tar -xvpf -)

If all else fails!
# man tar

Regards,
Hazen.
On Fri, Jan 15, 2010 at 12:48 PM, Hazen Valliant-Saunders <hazenvs@gmail.com
> wrote:

> Tar is your friend and ally.
>
> 1. install and Mount the disk to a mount point.
> 2. Use tar in for it's intended purpose
> https://help.ubuntu.com/community/BackupYourSystem/TAR
> 3. remove old drive, & configure the new one as your primary.
> 4. get a drink.
>
> On Fri, Jan 15, 2010 at 12:33 PM, Jarry <mr.jarry@gmail.com> wrote:
>
>> Hi, I'm facing this problem:
>>
>> I want to exchange hard-drive in my computer for other, bigger
>> one. I do not want to add new hard-drive somewhere on mount-point
>> permanently, I just want to copy everything from the old drive
>> to the new one and then get rid of the old one. And of course,
>> I'd like to use my computer as before. What is the best (maybe
>> I should ask for safest) way to acomplish this?
>>
>> First I thought about "cp -a". But I'm not sure which directories
>> I should skip (/proc, maybe some other like /dev?). And I do not
>> know how cp handles links (if I first copy link and later target,
>> where is the link pointing? to the original file or its copy?).
>>
>> Maybe dump/restore is better solution? Or something else?
>>
>> Jarry
>>
>> --
>> _______________________________________________________________
>> This mailbox accepts e-mails only from selected mailing-lists!
>> Everything else is considered to be spam and therefore deleted.
>>
>>
>
>
> --
> Hazen Valliant-Saunders
> IT/IS Consultant
> (613) 355-5977
>



-- 
Hazen Valliant-Saunders
IT/IS Consultant
(613) 355-5977

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Re: [gentoo-user] How can I move system to new disk?

[Dale]

Hazen Valliant-Saunders wrote:
> Tar is your friend and ally.
>
> 1. install and Mount the disk to a mount point.
> 2. Use tar in for it's intended purpose
> https://help.ubuntu.com/community/BackupYourSystem/TAR
> 3. remove old drive, & configure the new one as your primary.
> 4. get a drink.
>
> On Fri, Jan 15, 2010 at 12:33 PM, Jarry <mr.jarry@gmail.com 
> <mailto:mr.jarry@gmail.com>> wrote:
>
>     Hi, I'm facing this problem:
>
>     I want to exchange hard-drive in my computer for other, bigger
>     one. I do not want to add new hard-drive somewhere on mount-point
>     permanently, I just want to copy everything from the old drive
>     to the new one and then get rid of the old one. And of course,
>     I'd like to use my computer as before. What is the best (maybe
>     I should ask for safest) way to acomplish this?
>
>     First I thought about "cp -a". But I'm not sure which directories
>     I should skip (/proc, maybe some other like /dev?). And I do not
>     know how cp handles links (if I first copy link and later target,
>     where is the link pointing? to the original file or its copy?).
>
>     Maybe dump/restore is better solution? Or something else?
>
>     Jarry
>
>     -- 
>     _______________________________________________________________
>     This mailbox accepts e-mails only from selected mailing-lists!
>     Everything else is considered to be spam and therefore deleted.
>
>


I have done this several times and only used cp -a.  I just skipped 
/dev, /proc, /tmp and other none needed ones.  Don't forget to copy 
console and null in /dev tho.

Dale

:-)  :-) 

Re: [gentoo-user] How can I move system to new disk?

[Hazen Valliant-Saunders]

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cp -a works, i just like pipes.

On Fri, Jan 15, 2010 at 1:09 PM, Dale <rdalek1967@gmail.com> wrote:

> Hazen Valliant-Saunders wrote:
>
>> Tar is your friend and ally.
>>
>> 1. install and Mount the disk to a mount point.
>> 2. Use tar in for it's intended purpose
>> https://help.ubuntu.com/community/BackupYourSystem/TAR
>> 3. remove old drive, & configure the new one as your primary.
>> 4. get a drink.
>>
>> On Fri, Jan 15, 2010 at 12:33 PM, Jarry <mr.jarry@gmail.com <mailto:
>> mr.jarry@gmail.com>> wrote:
>>
>>    Hi, I'm facing this problem:
>>
>>    I want to exchange hard-drive in my computer for other, bigger
>>    one. I do not want to add new hard-drive somewhere on mount-point
>>    permanently, I just want to copy everything from the old drive
>>    to the new one and then get rid of the old one. And of course,
>>    I'd like to use my computer as before. What is the best (maybe
>>    I should ask for safest) way to acomplish this?
>>
>>    First I thought about "cp -a". But I'm not sure which directories
>>    I should skip (/proc, maybe some other like /dev?). And I do not
>>    know how cp handles links (if I first copy link and later target,
>>    where is the link pointing? to the original file or its copy?).
>>
>>    Maybe dump/restore is better solution? Or something else?
>>
>>    Jarry
>>
>>    --    _______________________________________________________________
>>    This mailbox accepts e-mails only from selected mailing-lists!
>>    Everything else is considered to be spam and therefore deleted.
>>
>>
>>
>
> I have done this several times and only used cp -a.  I just skipped /dev,
> /proc, /tmp and other none needed ones.  Don't forget to copy console and
> null in /dev tho.
>
> Dale
>
> :-)  :-)
>



-- 
Hazen Valliant-Saunders
IT/IS Consultant
(613) 355-5977

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[gentoo-user] Re: How can I move system to new disk?

[Remy Blank]

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Jarry wrote:
> Maybe dump/restore is better solution? Or something else?

Boot a live CD, mount a source partition to /mnt/src, a destination
partition to /mnt/dst (with the right options, e.g. "acl" and
"user_xattr" if you use them), then:

  rsync -avHAX /mnt/src/ /mnt/dst

(The slash after "src" is intentional.)

Repeat with all partitions. Then install GRUB to the MBR of the new disk.

-- Remy


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Re: [gentoo-user] How can I move system to new disk?

[Zhu Sha Zang]

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Hash: SHA1

Em 15-01-2010 15:33, Jarry escreveu:
> Hi, I'm facing this problem:
>
> I want to exchange hard-drive in my computer for other, bigger
> one. I do not want to add new hard-drive somewhere on mount-point
> permanently, I just want to copy everything from the old drive
> to the new one and then get rid of the old one. And of course,
> I'd like to use my computer as before. What is the best (maybe
> I should ask for safest) way to acomplish this?
>
> First I thought about "cp -a". But I'm not sure which directories
> I should skip (/proc, maybe some other like /dev?). And I do not
> know how cp handles links (if I first copy link and later target,
> where is the link pointing? to the original file or its copy?).
>
> Maybe dump/restore is better solution? Or something else?
>
> Jarry
>

In a small cluster with machines have the same configuration (or not,
when newer hd are more bigger than the oldest) i use a live cd and cp
- -pr /mnt/gentoo/* /mnt/gentoo2/*.

Works fine. Changing hostname and ip and i have a new cluster client.
Better than ghost that don't change mbr or dd. A "shutdown -Fr now" in
a first reboot is a good idea.

att
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Re: [gentoo-user] Re: How can I move system to new disk?

[Szénási István]

And what about dd?
Not the fastest solution, but it is copy the mbr, the boot loader, the
partition table and all partitions. After it you should use the parted
or the gparted to move/resize the necesarry partitions.

-- 
Szénási István

Re: [gentoo-user] Re: How can I move system to new disk?

[Stroller]

On 15 Jan 2010, at 20:12, Szénási István wrote:

> And what about dd?
> Not the fastest solution, but it is copy the mbr, the boot loader, the
> partition table and all partitions. After it you should use the parted
> or the gparted to move/resize the necesarry partitions.

It should be mentioned that if you use this method then, after running  
parted to resize the partition(s), you will also need to resize the  
filesystem(s) on the partition(s).

This is well documented - google "resize ext3" or whatever. Not sure  
if this is necessary using GParted - probably not.

Stroller.

Re: [gentoo-user] Re: How can I move system to new disk?

[Szénási István]

> It should be mentioned that if you use this method then, after running
> parted to resize the partition(s), you will also need to resize the
> filesystem(s) on the partition(s).

If I remember correctly, you're right and the resize of he filesystem required.
Of course if you shrink the partition, first you need to resize the
file system before the
resizing of the partition and if you grow the partition, first you
need to resize the partition
before the resizing the file system. (Maybe, you should turn off the
journalling when you
modify an ext3 file system, but i am not sure in it)

> This is well documented - google "resize ext3" or whatever. Not sure if this
> is necessary using GParted - probably not.
I strongly recommend the gparted, I have resized and moved partitions
(ext2, ext3 and ntfs) with it,
and i never had problem with it. It hase a nice GUI and it does every
necessary steps automatically. :-)

-- 
Szénási István

Re: [gentoo-user] How can I move system to new disk?

[Alexander]

On Friday 15 January 2010 20:33:36 Jarry wrote:
> Hi, I'm facing this problem:
> 
> I want to exchange hard-drive in my computer for other, bigger
> one. I do not want to add new hard-drive somewhere on mount-point
> permanently, I just want to copy everything from the old drive
> to the new one and then get rid of the old one. And of course,
> I'd like to use my computer as before. What is the best (maybe
> I should ask for safest) way to acomplish this?
> 
> First I thought about "cp -a". But I'm not sure which directories
> I should skip (/proc, maybe some other like /dev?). And I do not
> know how cp handles links (if I first copy link and later target,
> where is the link pointing? to the original file or its copy?).
> 
> Maybe dump/restore is better solution? Or something else?
> 
> Jarry
> 

it depends on how your drive partitioned and which FS is used. For example, if 
the root disk (i.e. w/o /home and possibly /var directories) is the separate 
partition with XFS file system you can use simultanious dump and restore on live 
system. Not all FS has  dump/restore utilities, however if it is available it 
should be prefered over cp and tar and, possibly, rsync.

[gentoo-user] Re: How can I move system to new disk?

[Nikos Chantziaras]

On 01/15/2010 07:33 PM, Jarry wrote:
> Hi, I'm facing this problem:
>
> I want to exchange hard-drive in my computer for other, bigger
> one. I do not want to add new hard-drive somewhere on mount-point
> permanently, I just want to copy everything from the old drive
> to the new one and then get rid of the old one. And of course,
> I'd like to use my computer as before. What is the best (maybe
> I should ask for safest) way to acomplish this?
>
> First I thought about "cp -a". But I'm not sure which directories
> I should skip (/proc, maybe some other like /dev?). And I do not
> know how cp handles links (if I first copy link and later target,
> where is the link pointing? to the original file or its copy?).
>
> Maybe dump/restore is better solution? Or something else?

I'll just copy the instructions I have someone else here:

You can clone the existing Gentoo installation into the new partition 
and boot from it.  You can do this while the system is actually running. 
  The new partition can be anything you want (different size, different 
file system).  This usually means:


rsync your existing / to your target / (except /dev, /sys and /proc and 
of course mount points that belong to a different filesystem, /boot or 
/home for example if you're using dedicated partitions for those).  If 
you mounted your target / as /root/newpart, this is done with:

rsync -ax / /root/newpart

If this copied directories it shouldn't have (like /sys or /proc), 
simply delete them again.

Then:

mkdir /root/newpart/dev
mkdir /root/newpart/proc
mkdir /root/newpart/sys
mknod /root/newpart/dev/console c 5 1
mknod /root/newpart/null c 1 3
touch /root/newpart/dev/.keep
touch /root/newpart/proc/.keep
touch /root/newpart/sys/.keep

Now chroot into it to set up the boot loader (I assume you use Grub):

mount -t proc none /root/newpart/proc
mount -o bind /dev /root/newpart/dev
chroot /root/newpart /bin/bash

Now edit /etc/fstab to use the new partition and edit 
/boot/grub/grub.conf and reinstall grub:


grub
root (hd0,0) <-- sustitute with what you really have/want
setup
quit

You're ready. Leave the chroot and unmount:

exit
umount /root/newpart/dev
umount /root/newpart/proc

If you've set up grub correctly while in the chroot, you can now reboot
and the system should come up using the new partition.  If you used a 
different filesystem for the new partition (for example going from ext3 
to ext4), make sure your kernel supports the new filesystem.

Re: [gentoo-user] Re: How can I move system to new disk?

[ubiquitous1980]

Szénási István wrote:
>> It should be mentioned that if you use this method then, after running
>> parted to resize the partition(s), you will also need to resize the
>> filesystem(s) on the partition(s).
>>     
>
> If I remember correctly, you're right and the resize of he filesystem required.
> Of course if you shrink the partition, first you need to resize the
> file system before the
> resizing of the partition and if you grow the partition, first you
> need to resize the partition
> before the resizing the file system. (Maybe, you should turn off the
> journalling when you
> modify an ext3 file system, but i am not sure in it)
>
>   
>> This is well documented - google "resize ext3" or whatever. Not sure if this
>> is necessary using GParted - probably not.
>>     
> I strongly recommend the gparted, I have resized and moved partitions
> (ext2, ext3 and ntfs) with it,
> and i never had problem with it. It hase a nice GUI and it does every
> necessary steps automatically. :-)
>
>   
I did this the other day for an experiment.  I used a spare partition,
and of course the partition concerned was unmounted:

dd if=/dev/sda4 of=backup.iso

then I did:

dd if=backup.iso of=/dev/sda3

I also have done a complete backup using tar to save some space.

tar cvfj backup.tar.bz2 /dev/sda4

when I decompress, I imagine I will mount the partition say /dev/sda3
and do the following

tar xvvf backup.tar.bz2

(This might be not accurate, but I hope it gives you a fair idea of
where to start)

Re: [gentoo-user] Re: How can I move system to new disk?

[YoYo siska]

On Sat, Jan 16, 2010 at 03:21:32PM +0200, Nikos Chantziaras wrote:
> On 01/15/2010 07:33 PM, Jarry wrote:
>> Hi, I'm facing this problem:
>>
>> I want to exchange hard-drive in my computer for other, bigger
>> one. I do not want to add new hard-drive somewhere on mount-point
>> permanently, I just want to copy everything from the old drive
>> to the new one and then get rid of the old one. And of course,
>> I'd like to use my computer as before. What is the best (maybe
>> I should ask for safest) way to acomplish this?
>>
>> First I thought about "cp -a". But I'm not sure which directories
>> I should skip (/proc, maybe some other like /dev?). And I do not
>> know how cp handles links (if I first copy link and later target,
>> where is the link pointing? to the original file or its copy?).
>>
>> Maybe dump/restore is better solution? Or something else?
>
> I'll just copy the instructions I have someone else here:
>
> You can clone the existing Gentoo installation into the new partition  
> and boot from it.  You can do this while the system is actually running.  
>  The new partition can be anything you want (different size, different  
> file system).  This usually means:
>
>
> rsync your existing / to your target / (except /dev, /sys and /proc and  
> of course mount points that belong to a different filesystem, /boot or  
> /home for example if you're using dedicated partitions for those).  If  
> you mounted your target / as /root/newpart, this is done with:
>
> rsync -ax / /root/newpart
>
> If this copied directories it shouldn't have (like /sys or /proc),  
> simply delete them again.
>
> Then:
>
> mkdir /root/newpart/dev
> mkdir /root/newpart/proc
> mkdir /root/newpart/sys
> mknod /root/newpart/dev/console c 5 1
> mknod /root/newpart/null c 1 3
> touch /root/newpart/dev/.keep
> touch /root/newpart/proc/.keep
> touch /root/newpart/sys/.keep


If you are doing it this way (on a running system with mounted
dev/proc/sys...), you can just bind-mount your current / to another
directory. That "copy" will not contain any "sub-mounts" (as if you
accessed it from a livecd), so you could just do

(mount your /mnt/new_root)
mkdir /mnt/current_root
mount -o bind / /mnt/current_root
rsync -aHAX /mnt/current_root/ /mnt/new_root/

i always remout / readonly first, for that you usually have to go to
single user, or stop most of the services and programs...

yoyo


>
> Now chroot into it to set up the boot loader (I assume you use Grub):
>
> mount -t proc none /root/newpart/proc
> mount -o bind /dev /root/newpart/dev
> chroot /root/newpart /bin/bash
>
> Now edit /etc/fstab to use the new partition and edit  
> /boot/grub/grub.conf and reinstall grub:
>
>
> grub
> root (hd0,0) <-- sustitute with what you really have/want
> setup
> quit
>
> You're ready. Leave the chroot and unmount:
>
> exit
> umount /root/newpart/dev
> umount /root/newpart/proc
>
> If you've set up grub correctly while in the chroot, you can now reboot
> and the system should come up using the new partition.  If you used a  
> different filesystem for the new partition (for example going from ext3  
> to ext4), make sure your kernel supports the new filesystem.
>
>

[gentoo-user] Re: How can I move system to new disk?

[Nikos Chantziaras]

On 01/17/2010 12:40 AM, YoYo siska wrote:
> On Sat, Jan 16, 2010 at 03:21:32PM +0200, Nikos Chantziaras wrote:
>> On 01/15/2010 07:33 PM, Jarry wrote:
>>  [...]
>> I'll just copy the instructions I have someone else here:
>>
>> You can clone the existing Gentoo installation into the new partition
>> and boot from it.  You can do this while the system is actually running.
>>   The new partition can be anything you want (different size, different
>> file system).  This usually means:
>>
>>
>> rsync your existing / to your target / (except /dev, /sys and /proc and
>> of course mount points that belong to a different filesystem, /boot or
>> /home for example if you're using dedicated partitions for those).  If
>> you mounted your target / as /root/newpart, this is done with:
>>
>> rsync -ax / /root/newpart
>>
>> If this copied directories it shouldn't have (like /sys or /proc),
>> simply delete them again.
>> [...]
>
> If you are doing it this way (on a running system with mounted
> dev/proc/sys...), you can just bind-mount your current / to another
> directory. That "copy" will not contain any "sub-mounts"

rsync -ax / /target shouldn't copy any sub-mounts either, because of the 
-x option.  See man rsync.  I mentioned it just in case ;)

Re: [gentoo-user] Re: How can I move system to new disk?

[Neil Bothwick]

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On Sat, 16 Jan 2010 23:40:44 +0100, YoYo siska wrote:

> . If you are doing it this way (on a running system with mounted
> dev/proc/sys...), you can just bind-mount your current / to another
> directory. That "copy" will not contain any "sub-mounts" (as if you
> accessed it from a livecd),

Or you could simply use the -x option with rsync. But copying an in use
filesystem is a bad idea, better to boot from a live CD and do the job
there. If you want to minimise downtime, do the rsync on the working
system then boot from the live CD and do it again. The second run should
take seconds but will make sure your disk is consistent. Remember to use
--delete on the second run.


-- 
Neil Bothwick

We shall shortly be landing. Please return your stewardess to
the upright position.

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Re: [gentoo-user] Re: How can I move system to new disk?

[YoYo siska]

On Sun, Jan 17, 2010 at 08:48:21AM +0200, Nikos Chantziaras wrote:
> On 01/17/2010 12:40 AM, YoYo siska wrote:
>> On Sat, Jan 16, 2010 at 03:21:32PM +0200, Nikos Chantziaras wrote:
>>> On 01/15/2010 07:33 PM, Jarry wrote:
>>>  [...]
>>> I'll just copy the instructions I have someone else here:
>>>
>>> You can clone the existing Gentoo installation into the new partition
>>> and boot from it.  You can do this while the system is actually running.
>>>   The new partition can be anything you want (different size, different
>>> file system).  This usually means:
>>>
>>>
>>> rsync your existing / to your target / (except /dev, /sys and /proc and
>>> of course mount points that belong to a different filesystem, /boot or
>>> /home for example if you're using dedicated partitions for those).  If
>>> you mounted your target / as /root/newpart, this is done with:
>>>
>>> rsync -ax / /root/newpart
>>>
>>> If this copied directories it shouldn't have (like /sys or /proc),
>>> simply delete them again.
>>> [...]
>>
>> If you are doing it this way (on a running system with mounted
>> dev/proc/sys...), you can just bind-mount your current / to another
>> directory. That "copy" will not contain any "sub-mounts"
>
> rsync -ax / /target shouldn't copy any sub-mounts either, because of the  
> -x option.  See man rsync.  I mentioned it just in case ;)
>
yes, but it will miss any files "hidden" under those mounts, though
normally that menas only /dev/, the others are empty...
and i like it more, because it makes a more "exact" copy ;)

yoyo

Re: [gentoo-user] Re: How can I move system to new disk?

[Keith Dart]

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=== On Sun, 01/17, Neil Bothwick wrote: ===
> Or you could simply use the -x option with rsync. But copying an in
> use filesystem is a bad idea, better to boot from a live CD and do
> the job there. If you want to minimise downtime, 
===

I recently did something like this. I did use the 10th anniversary live
DVD, but copied to USB stick, to perform it. :-) I like that so far,
thanks guys.  The "cp -a" on the mount points worked well, also. The
tricky part for me was that the original (source) disk was once a pair
in a RAID 1 array, with LVM. The other member failed. So you also have
to start the array on the original in degraded mode and also rename
the LVM volume group name. 

In the end it Gentoo live DVD is a handy tool. If you keep in on USB
stick you can also update it and add new files, like Gentoo quick
install guide. ;-)
 


-- Keith Dart

-- 

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   public key: ID: 19017044
   <http://www.dartworks.biz/>
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Re: [gentoo-user] How can I move system to new disk?

[Mickaël Bucas]

2010/1/15 Jarry <mr.jarry@gmail.com>:
> Hi, I'm facing this problem:
>
> I want to exchange hard-drive in my computer for other, bigger
> one. I do not want to add new hard-drive somewhere on mount-point
> permanently, I just want to copy everything from the old drive
> to the new one and then get rid of the old one. And of course,
> I'd like to use my computer as before. What is the best (maybe
> I should ask for safest) way to acomplish this?
>
> First I thought about "cp -a". But I'm not sure which directories
> I should skip (/proc, maybe some other like /dev?). And I do not
> know how cp handles links (if I first copy link and later target,
> where is the link pointing? to the original file or its copy?).
>
> Maybe dump/restore is better solution? Or something else?
>
> Jarry
>

I've done it twice with the following method :
http://www.faqs.org/docs/Linux-mini/Hard-Disk-Upgrade.html

There are a few things to change : no more Lilo, ext2, IDE, diskettes these days
But the check list is complete so you won't forget important points.

Mickaël Bucas

Re: [gentoo-user] Re: How can I move system to new disk?

[Frank Steinmetzger]

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Am Sonntag, 17. Januar 2010 schrieb Neil Bothwick:

> On Sat, 16 Jan 2010 23:40:44 +0100, YoYo siska wrote:
> > . If you are doing it this way (on a running system with mounted
> > dev/proc/sys...), you can just bind-mount your current / to another
> > directory. That "copy" will not contain any "sub-mounts" (as if you
> > accessed it from a livecd),
>
> Or you could simply use the -x option with rsync. But copying an in use
> filesystem is a bad idea, better to boot from a live CD and do the job
> there. If you want to minimise downtime, do the rsync on the working
> system then boot from the live CD and do it again. The second run should
> take seconds but will make sure your disk is consistent. Remember to use
> --delete on the second run.

I did it this exact way when I bought a new HDD for my laptop last Christmas, 
because then I could still use my normal system instead of booting a LiveCD 
and waiting for the sync to finish (which could take half an hour). Copying 
16GB from a laptop HDD to another one via USB is not that fast. Only before 
everything was done and I was ready to boot with the new HDD, I did another 
rsync with logged-out users on TTY1, which takes but a minute. IIRC I didn’t 
even boot a live CD.

And even IF there were some flaws in the mirrored system, there’d be no harm 
done as I have the original still around to amend them.
-- 
Gruß | Greetings | Qapla'
Crayons can take you more places than starships. (Guinan)

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