Re: Hard Drive Going - Need a good backup utility

2003-08-14 Thread Alvin Oga

hi ya

On Mon, 11 Aug 2003, R Ransbottom wrote:

 On Sun, Aug 10, 2003 at 09:47:32PM -0700, Alvin Oga wrote:
 
  if the disk is dying ... doing a full disk backup will probably
  kill it completely just as easily as it could keep going a few more
  reads/write 
 
  mount /dev/hdc1 /mnt/hdc1
  tar cvf - /dev/hda1 | ( cd /mnt/hdc1 ; tar xvfp - )
  sync ; umount /mnt/hdc1
 
 If stressing the disk during the backup is a concern it would be
 better to: umount the drives partitions, swapoff any swap space on
 the disk, dd the disk (or its partitions one by one) onto other media. 
 By ignoring the filesystems on the failing drive you excerise the drive
 less.

yup.. good point ...
- get knoppix or other stand alone media or a pre-installed clean
deb install  and than copy your data from the failing disk to the new one
 
- leave the dying disk alone ... if want its data to stay intact
as long as possible

- or simply fix the original source of the problem
( bad cables, bad power supply, bad patches, bad kernel, bad
( section of disk, bad memory that makes disks look bad, etc 

c ya
alvin


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Re: Hard Drive Going - Need a good backup utility

2003-08-14 Thread ZekeVarg
On Mon, 2003-08-11 at 05:58, Keith Goettert wrote:
 The boot drive of one of my systems is going.  I would like to make a
 copy to CD or a Disk to Disk copy.  It has many partitions and I would
 like to preserve them seperately or at least be able to recreate them
 painlessly.

For regular backup I use dar and if I need to copy a whole disk I use
mirrordir
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ZekeVarg [EMAIL PROTECTED]


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Re: Hard Drive Going - Need a good backup utility

2003-08-14 Thread Alvin Oga

hi ya

On Sun, 10 Aug 2003, Keith Goettert wrote:

 The boot drive of one of my systems is going.  I would like to make a
 copy to CD or a Disk to Disk copy.  It has many partitions and I would
 like to preserve them seperately or at least be able to recreate them
 painlessly.

too late 

if the disk is dying ... doing a full disk backup will probably
kill it completely just as easily as it could keep going a few more
reads/write 

disks dies for multiple reasons ... pick the right one for why
your disk is dying .. and prevent it next time 

if you want to burn a cdrom ... 
you need more disk space on a clean disk

if you want to do a disk to disk copy .. presumably you
already have a good disk ...and you have excluded bad cables,
bad memory, bad motherboard, etc  as possible reasons
for why the disks appear to be bad ??

assuming everything is still functional

assuming your new disk ( hdc ) is on a new cable 

mount /dev/hdc1 /mnt/hdc1
tar cvf - /dev/hda1 | ( cd /mnt/hdc1 ; tar xvfp - )
sync ; umount /mnt/hdc1

repeat for each partition

if your disk is functional ... the above disk to disk will work
if your disk is dying  the aboce will copy parts of the disk
  and some files will be corrupt .. which ones is bad is the test

=== best bet ...
-- restore your data from backups onto a new disk
-- leave the current disk alone .. retire it as is ...

c ya
alvin


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Re: Hard Drive Going - Need a good backup utility

2003-08-12 Thread R Ransbottom
On Sun, Aug 10, 2003 at 09:47:32PM -0700, Alvin Oga wrote:

 if the disk is dying ... doing a full disk backup will probably
 kill it completely just as easily as it could keep going a few more
 reads/write 

 mount /dev/hdc1 /mnt/hdc1
 tar cvf - /dev/hda1 | ( cd /mnt/hdc1 ; tar xvfp - )
 sync ; umount /mnt/hdc1

If stressing the disk during the backup is a concern it would be
better to: umount the drives partitions, swapoff any swap space on
the disk, dd the disk (or its partitions one by one) onto other media. 
By ignoring the filesystems on the failing drive you excerise the drive
less.


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