Backup Central

Hey,

I'm on the horns of a dilemma, as they say. I upgraded my workstation,
and got this bright idea to downsize my hard drive, since I had to
reinstall from scratch anyway...Well, it didn't work out so well,
because I went from a (silent) Samsung to a (noisy) Maxtor. In any
case, I can no longer deal with the "crunchies" that the Maxtor makes,
and I want to go back to the Samsung drive.

So I decided the best approach was to do a Debian/squeeze build (the
machine runs sid), then restore from backups. The problem I had with
this approach is that grub and LVM and cryptsetup all seem to have the
UUIDs from the Maxtor drive embedded in their setups, and when I try
to restore from backups, they don't match the ones generated for the
Samsung drive. I booted on the grml live cd, mounted all filesystems:

/dev/mapper/vg00-root 972332 581840 341752 63% /mnt/external
/dev/sda2 496446 92894 378552 20%
/mnt/external/boot
/dev/mapper/vg00-home 38973576 31241272 5779332 85% /mnt/external/home
/dev/mapper/vg00-opt 2921604 1320676 1454496 48% /mnt/external/opt
/dev/mapper/vg00-usr 14597932 7501052 6364516 55% /mnt/external/usr
/dev/mapper/vg00-usrlocal 2921604 178336 2596836 7%
/mnt/external/usr/local
/dev/mapper/vg00-var 4867772 1728268 2895384 38% /mnt/external/var
/dev/mapper/vg00-archive 41332128 17949584 21285868 46% /media/archive

I then did a mount --bind from the grml cd of /dev, /proc, /sys and
/run and did a chroot onto the filesystem of the drive, and tried to
reinstall grub. It reinstalled, but at the end it said

grub-probe: error: no such disk.

And sure enough, grub couldn't find anything to boot.

So my question at this juncture is what is the best way to restore
everything to the Samsung drive? Since the drive is encrypted, I used
the Debian installer to encrypt the filesystem. I'm wondering what my
best approach would be. I figure my options are:

* go in and find every occurrence of every UUID on the system and change them;
* somehow nuke everything on the Samsung and restore from backups, but
I think the UUIDs are generated from the drive itself (since I am
mounting /dev, and therefore, /dev/disk/by-uuid from the live CD), so
I suspect that I would end up in the same situation anyway;
* do it the old school way, install Debian, upgrade to sid, reinstall
all of the packages, and then spend time configuring everything, which
is what I was trying to avoid in the first place. Admittedly, I have a
lot of it configured in puppet, but there are still things that aren't
yet. And besides, I think I'm overlooking something fairly important
here, that there should be an easy way to sort out the UUID issues.

Anyone got any ideas or suggestions?

Thanks,
--b

------------------------------------------------------------------------------
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threat landscape has changed and how IT managers can respond. Discussions
will include endpoint security, mobile security and the latest in malware
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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Hi Brad,

I am NOT much more than a neophyte on Linux, so take all of this with a grain of salt.

Having run Windows for many years, I had Ghost for imaging drives. The earlier versions of Ghost could do ext2.

I run an with /home on another drive formatted ext3. I run Ghost to image the ext2 boot system resulting in about a 2 GB file that will fit on a DVD.
If the boot HD fails, I replace the drive and restore the image, update, install applications to get back into business.

-- ken

On Fri, 2012-04-27 at 10:45 -0400, Brad Alexander wrote:
Hey,

I'm on the horns of a dilemma, as they say. I upgraded my workstation,
and got this bright idea to downsize my hard drive, since I had to
reinstall from scratch anyway...Well, it didn't work out so well,
because I went from a (silent) Samsung to a (noisy) Maxtor. In any
case, I can no longer deal with the "crunchies" that the Maxtor makes,
and I want to go back to the Samsung drive.

So I decided the best approach was to do a Debian/squeeze build (the
machine runs sid), then restore from backups. The problem I had with
this approach is that grub and LVM and cryptsetup all seem to have the
UUIDs from the Maxtor drive embedded in their setups, and when I try
to restore from backups, they don't match the ones generated for the
Samsung drive. I booted on the grml live cd, mounted all filesystems:

/dev/mapper/vg00-root 972332 581840 341752 63% /mnt/external
/dev/sda2 496446 92894 378552 20%
/mnt/external/boot
/dev/mapper/vg00-home 38973576 31241272 5779332 85% /mnt/external/home
/dev/mapper/vg00-opt 2921604 1320676 1454496 48% /mnt/external/opt
/dev/mapper/vg00-usr 14597932 7501052 6364516 55% /mnt/external/usr
/dev/mapper/vg00-usrlocal 2921604 178336 2596836 7%
/mnt/external/usr/local
/dev/mapper/vg00-var 4867772 1728268 2895384 38% /mnt/external/var
/dev/mapper/vg00-archive 41332128 17949584 21285868 46% /media/archive

I then did a mount --bind from the grml cd of /dev, /proc, /sys and
/run and did a chroot onto the filesystem of the drive, and tried to
reinstall grub. It reinstalled, but at the end it said

grub-probe: error: no such disk.

And sure enough, grub couldn't find anything to boot.

So my question at this juncture is what is the best way to restore
everything to the Samsung drive? Since the drive is encrypted, I used
the Debian installer to encrypt the filesystem. I'm wondering what my
best approach would be. I figure my options are:

* go in and find every occurrence of every UUID on the system and change them;
* somehow nuke everything on the Samsung and restore from backups, but
I think the UUIDs are generated from the drive itself (since I am
mounting /dev, and therefore, /dev/disk/by-uuid from the live CD), so
I suspect that I would end up in the same situation anyway;
* do it the old school way, install Debian, upgrade to sid, reinstall
all of the packages, and then spend time configuring everything, which
is what I was trying to avoid in the first place. Admittedly, I have a
lot of it configured in puppet, but there are still things that aren't
yet. And besides, I think I'm overlooking something fairly important
here, that there should be an easy way to sort out the UUID issues.

Anyone got any ideas or suggestions?

Thanks,
--b

------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and
threat landscape has changed and how IT managers can respond. Discussions
will include endpoint security, mobile security and the latest in malware
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
_______________________________________________
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List: https://lists.sourceforge.net/lists/listinfo/backuppc-users
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Project: http://backuppc.sourceforge.net/

Thanks, Ken,

The problem is that the UUID is generated uniquely for each drive. So
what happens is that the partitions all have unique IDs. If you
restore from backups, the IDs that the system *thinks* are there are
different. That's the problem I'm running in to.

--b

On Fri, Apr 27, 2012 at 11:24 AM, Kenneth L. Owen
<tx836519 < at > bellsouth.net> wrote:
Hi Brad,

I am NOT much more than a neophyte on Linux, so take all of this with a
grain of salt.

Having run Windows for many years, I had Ghost for imaging drives.  The
earlier versions of Ghost could do ext2.

I run an with /home on another drive formatted ext3.  I run Ghost to image
the ext2 boot system resulting in about a 2 GB file that will fit on a DVD.
If the boot HD fails, I replace the drive and restore the image, update,
install applications to get back into business.

-- ken


On Fri, 2012-04-27 at 10:45 -0400, Brad Alexander wrote:

Hey,

I'm on the horns of a dilemma, as they say. I upgraded my workstation,
and got this bright idea to downsize my hard drive, since I had to
reinstall from scratch anyway...Well, it didn't work out so well,
because I went from a (silent) Samsung to a (noisy) Maxtor. In any
case, I can no longer deal with the "crunchies" that the Maxtor makes,
and I want to go back to the Samsung drive.

So I decided the best approach was to do a Debian/squeeze build (the
machine runs sid), then restore from backups. The problem I had with
this approach is that grub and LVM and cryptsetup all seem to have the
UUIDs from the Maxtor drive embedded in their setups, and when I try
to restore from backups, they don't match the ones generated for the
Samsung drive. I booted on the grml live cd, mounted all filesystems:

/dev/mapper/vg00-root 972332 581840 341752 63% /mnt/external
/dev/sda2 496446 92894 378552 20%
/mnt/external/boot
/dev/mapper/vg00-home 38973576 31241272 5779332 85%
/mnt/external/home
/dev/mapper/vg00-opt 2921604 1320676 1454496 48%
/mnt/external/opt
/dev/mapper/vg00-usr 14597932 7501052 6364516 55%
/mnt/external/usr
/dev/mapper/vg00-usrlocal 2921604 178336 2596836 7%
/mnt/external/usr/local
/dev/mapper/vg00-var 4867772 1728268 2895384 38%
/mnt/external/var
/dev/mapper/vg00-archive 41332128 17949584 21285868 46% /media/archive

I then did a mount --bind from the grml cd of /dev, /proc, /sys and
/run and did a chroot onto the filesystem of the drive, and tried to
reinstall grub. It reinstalled, but at the end it said

grub-probe: error: no such disk.

And sure enough, grub couldn't find anything to boot.

So my question at this juncture is what is the best way to restore
everything to the Samsung drive? Since the drive is encrypted, I used
the Debian installer to encrypt the filesystem. I'm wondering what my
best approach would be. I figure my options are:

* go in and find every occurrence of every UUID on the system and change
them;
* somehow nuke everything on the Samsung and restore from backups, but
I think the UUIDs are generated from the drive itself (since I am
mounting /dev, and therefore, /dev/disk/by-uuid from the live CD), so
I suspect that I would end up in the same situation anyway;
* do it the old school way, install Debian, upgrade to sid, reinstall
all of the packages, and then spend time configuring everything, which
is what I was trying to avoid in the first place. Admittedly, I have a
lot of it configured in puppet, but there are still things that aren't
yet. And besides, I think I'm overlooking something fairly important
here, that there should be an easy way to sort out the UUID issues.

Anyone got any ideas or suggestions?

Thanks,
--b

------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and
threat landscape has changed and how IT managers can respond. Discussions
will include endpoint security, mobile security and the latest in malware
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
_______________________________________________
BackupPC-users mailing list
BackupPC-users < at > lists.sourceforge.net
List: https://lists.sourceforge.net/lists/listinfo/backuppc-users
Wiki: http://backuppc.wiki.sourceforge.net
Project: http://backuppc.sourceforge.net/



------------------------------------------------------------------------------
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threat landscape has changed and how IT managers can respond. Discussions
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threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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Project: http://backuppc.sourceforge.net/


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threat landscape has changed and how IT managers can respond. Discussions
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threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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On Fri, Apr 27, 2012 at 4:45 PM, Brad Alexander <storm16 < at > gmail.com ([email]storm16 < at > gmail.com[/email])> wrote:
Hey,

I'm on the horns of a dilemma, as they say. I upgraded my workstation,
and got this bright idea to downsize my hard drive, since I had to
reinstall from scratch anyway...Well, it didn't work out so well,
because I went from a (silent) Samsung to a (noisy) Maxtor. In any
case, I can no longer deal with the "crunchies" that the Maxtor makes,
and I want to go back to the Samsung drive.

So I decided the best approach was to do a Debian/squeeze build (the
machine runs sid), then restore from backups. The problem I had with
this approach is that grub and LVM and cryptsetup all seem to have the
UUIDs from the Maxtor drive embedded in their setups, and when I try
to restore from backups, they don't match the ones generated for the
Samsung drive. I booted on the grml live cd, mounted all filesystems:

/dev/mapper/vg00-root        972332    581840    341752  63% /mnt/external
/dev/sda2                          496446     92894    378552  20%
/mnt/external/boot
/dev/mapper/vg00-home      38973576  31241272   5779332  85% /mnt/external/home
/dev/mapper/vg00-opt        2921604   1320676   1454496  48% /mnt/external/opt
/dev/mapper/vg00-usr       14597932   7501052   6364516  55% /mnt/external/usr
/dev/mapper/vg00-usrlocal   2921604    178336   2596836   7%
/mnt/external/usr/local
/dev/mapper/vg00-var        4867772   1728268   2895384  38% /mnt/external/var
/dev/mapper/vg00-archive   41332128  17949584  21285868  46% /media/archive

I then did a mount --bind from the grml cd of /dev, /proc, /sys and
/run and did a chroot onto the filesystem of the drive, and tried to
reinstall grub. It reinstalled, but at the end it said

grub-probe: error: no such disk.

And sure enough, grub couldn't find anything to boot.

So my question at this juncture is what is the best way to restore
everything to the Samsung drive? Since the drive is encrypted, I used
the Debian installer to encrypt the filesystem. I'm wondering what my
best approach would be. I figure my options are:

* go in and find every occurrence of every UUID on the system and change them;
* somehow nuke everything on the Samsung and restore from backups, but
I think the UUIDs are generated from the drive itself (since I am
mounting /dev, and therefore, /dev/disk/by-uuid from the live CD), so
I suspect that I would end up in the same situation anyway;
* do it the old school way, install Debian, upgrade to sid, reinstall
all of the packages, and then spend time configuring everything, which
is what I was trying to avoid in the first place. Admittedly, I have a
lot of it configured in puppet, but there are still things that aren't
yet. And besides, I think I'm overlooking something fairly important
here, that there should be an easy way to sort out the UUID issues.

Anyone got any ideas or suggestions?

Thanks,
--b


You can change the UUIDs of your new drive so they match the ones of the old drive. 
tune2fs -U <NEWUUID> /dev/<HD-PARTITION>
see man tune2fs .


Just make sure you don't mix up the two drives since they will have identical UUIDs (which defeats the purpose of unique IDs).

On Fri, Apr 27, 2012 at 10:53 AM, Till Hofmann
<hofmanntill < at > googlemail.com> wrote:


You can change the UUIDs of your new drive so they match the ones of the old
drive.
tune2fs -U <NEWUUID> /dev/<HD-PARTITION>
see man tune2fs .

Just make sure you don't mix up the two drives since they will have
identical UUIDs (which defeats the purpose of unique IDs).

Or, boot with a live CD and edit the places where they are used -
probably just /etc/fstab unless grub uses them too.

If you are looking for a painless way to back up and restore a whole
linux sustem, look at clonezilla-live which will do partition-image
copies or ReaR which will will do a traditional tar backup but will
also build a boot ISO with a script to reconstruct your filesystem
layout and restore it. With a little fiddling you can adjust the
destination sizes. I'm not sure how either will mesh with encrypted
disks, though. I think ReaR could be tuned to do the parts of a bare
metal restore that backuppc needs fairly easily since it is just a
bunch of shell scripts.

--
Les Mikesell
lesmikesell < at > gmail.com

------------------------------------------------------------------------------
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threat landscape has changed and how IT managers can respond. Discussions
will include endpoint security, mobile security and the latest in malware
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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Project: http://backuppc.sourceforge.net/

Grub uses them too...But I changed them in grub.cfg and fstab (and
/etc/cryptab), and grub was still having issues...I tried both
update-grub /dev/sda and dpkg-reconfigure linux-image-3.2.0-2-amd64
(to rebuild the initramfs) and both gave me disk not found.

--b

On Fri, Apr 27, 2012 at 12:09 PM, Les Mikesell <lesmikesell < at > gmail.com> wrote:
On Fri, Apr 27, 2012 at 10:53 AM, Till Hofmann
<hofmanntill < at > googlemail.com> wrote:


You can change the UUIDs of your new drive so they match the ones of the old
drive.
tune2fs -U <NEWUUID> /dev/<HD-PARTITION>
see man tune2fs .

Just make sure you don't mix up the two drives since they will have
identical UUIDs (which defeats the purpose of unique IDs).

Or, boot with a live CD and edit the places where they are used -
probably just /etc/fstab unless grub uses them too.

If you are looking for a painless way to back up and restore a whole
linux sustem, look at clonezilla-live which will do partition-image
copies  or ReaR which will will do a traditional tar backup but will
also build a boot ISO with a script to reconstruct your filesystem
layout and restore it.  With a little fiddling you can adjust the
destination sizes.   I'm not sure how either will mesh with encrypted
disks, though.   I think ReaR could be tuned to do the parts of a bare
metal restore that backuppc needs fairly easily since it is just a
bunch of shell scripts.

--
  Les Mikesell
    lesmikesell < at > gmail.com

------------------------------------------------------------------------------
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Try update-grub there is also a grub config generator but the name escapes me check the list of binaries in the grub package.

--

Sent from a mobile device

Tim Fletcher

On 27 Apr 2012, at 17:16, Brad Alexander <storm16 < at > gmail.com> wrote:

Grub uses them too...But I changed them in grub.cfg and fstab (and
/etc/cryptab), and grub was still having issues...I tried both
update-grub /dev/sda and dpkg-reconfigure linux-image-3.2.0-2-amd64
(to rebuild the initramfs) and both gave me disk not found.

--b

On Fri, Apr 27, 2012 at 12:09 PM, Les Mikesell <lesmikesell < at > gmail.com> wrote:
On Fri, Apr 27, 2012 at 10:53 AM, Till Hofmann
<hofmanntill < at > googlemail.com> wrote:


You can change the UUIDs of your new drive so they match the ones of the old
drive.
tune2fs -U <NEWUUID> /dev/<HD-PARTITION>
see man tune2fs .

Just make sure you don't mix up the two drives since they will have
identical UUIDs (which defeats the purpose of unique IDs).

Or, boot with a live CD and edit the places where they are used -
probably just /etc/fstab unless grub uses them too.

If you are looking for a painless way to back up and restore a whole
linux sustem, look at clonezilla-live which will do partition-image
copies or ReaR which will will do a traditional tar backup but will
also build a boot ISO with a script to reconstruct your filesystem
layout and restore it. With a little fiddling you can adjust the
destination sizes. I'm not sure how either will mesh with encrypted
disks, though. I think ReaR could be tuned to do the parts of a bare
metal restore that backuppc needs fairly easily since it is just a
bunch of shell scripts.

--
Les Mikesell
lesmikesell < at > gmail.com

------------------------------------------------------------------------------
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threat landscape has changed and how IT managers can respond. Discussions
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Wiki: http://backuppc.wiki.sourceforge.net
Project: http://backuppc.sourceforge.net/

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Project: http://backuppc.sourceforge.net/


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I tried both, and both gave me the error, Tim.

--b

On Fri, Apr 27, 2012 at 1:25 PM, Tim Fletcher <tim < at > night-shade.org.uk> wrote:
Try update-grub there is also a grub config generator but the name escapes me check the list of binaries in the grub package.

--

Sent from a mobile device

Tim Fletcher

On 27 Apr 2012, at 17:16, Brad Alexander <storm16 < at > gmail.com> wrote:

Grub uses them too...But I changed them in grub.cfg and fstab (and
/etc/cryptab), and grub was still having issues...I tried both
update-grub /dev/sda and dpkg-reconfigure linux-image-3.2.0-2-amd64
(to rebuild the initramfs) and both gave me disk not found.

--b

On Fri, Apr 27, 2012 at 12:09 PM, Les Mikesell <lesmikesell < at > gmail.com> wrote:
On Fri, Apr 27, 2012 at 10:53 AM, Till Hofmann
<hofmanntill < at > googlemail.com> wrote:


You can change the UUIDs of your new drive so they match the ones of the old
drive.
tune2fs -U <NEWUUID> /dev/<HD-PARTITION>
see man tune2fs .

Just make sure you don't mix up the two drives since they will have
identical UUIDs (which defeats the purpose of unique IDs).

Or, boot with a live CD and edit the places where they are used -
probably just /etc/fstab unless grub uses them too.

If you are looking for a painless way to back up and restore a whole
linux sustem, look at clonezilla-live which will do partition-image
copies  or ReaR which will will do a traditional tar backup but will
also build a boot ISO with a script to reconstruct your filesystem
layout and restore it.  With a little fiddling you can adjust the
destination sizes.   I'm not sure how either will mesh with encrypted
disks, though.   I think ReaR could be tuned to do the parts of a bare
metal restore that backuppc needs fairly easily since it is just a
bunch of shell scripts.

--
  Les Mikesell
    lesmikesell < at > gmail.com

------------------------------------------------------------------------------
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Project: http://backuppc.sourceforge.net/

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On Fri, Apr 27, 2012 at 2:22 PM, Brad Alexander <storm16 < at > gmail.com> wrote:
I tried both, and both gave me the error, Tim.


Grub needs to know the drive and /boot partition according to bios
concepts. It would only be able to use uuids for the root mount in
the last stage.

--
Les Mikesell
lesmikesell < at > gmail.com

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On Friday 27 April 2012 12:16:36 Brad Alexander wrote:
Grub uses them too...But I changed them in grub.cfg and fstab (and
/etc/cryptab), and grub was still having issues...I tried both
update-grub /dev/sda and dpkg-reconfigure linux-image-3.2.0-2-amd64
(to rebuild the initramfs) and both gave me disk not found.

You also want "grub-install --recheck <your_drive>". That makes grub look at
the actual devices and re-get the uuids.

Good luck,

Arnold
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