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Full Discussion: backup to NFS mount Redhat-Solaris
Top Forums UNIX for Dummies Questions & Answers backup to NFS mount Redhat-Solaris Post 302195141 by Stin on Wednesday 14th of May 2008 11:29:02 AM
Old 05-14-2008
backup to NFS mount Redhat-Solaris
Hi guys,

I have a redhat laptop and a sun solaris 8 server networked together

I created an nfs share on the sun server and backed up an image of the Redhat laptop to it.
The Hard disk size of the laptop is 40Gb but I have about 38Gb free space on the sun server. So I compressed the image while backing up.

# dd if=/dev/hda | gzip > /NFS_MOUNT/backup.gz

This created the file OK.

Now I'm testing a restore.

So I have donwloaded System Rescue CD and booted the laptop with that.
I've set up the ip address and default gateway and can ping the Sun server.

I've then mounted the NFS partition, and can see the backup file.

However when I try to restore with the command:

# gzip -dc /NFS_MOUNT/backup.gz | dd of=/dev/hda

I get an error: No space left on device.

Am I missing a step? I thought dd would just overwrite the disk.
Does this mean there is not enough space on the sun server or not enough space on the redhat laptop?

When booted with the system rescue cd the output of sfdisk -l has /dev/sdaX where I was expecting /dev/hdX

Can anyone help?

Many thanks and kind regards,

Stin.
 

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LEARN ABOUT CENTOS

hd

HD(4)							     Linux Programmer's Manual							     HD(4)

NAME

       hd - MFM/IDE hard disk devices

DESCRIPTION

       The  hd*  devices  are block devices to access MFM/IDE hard disk drives in raw mode.  The master drive on the primary IDE controller (major
       device number 3) is hda; the slave drive is hdb.  The master drive of the second controller (major device number 22) is hdc and	the  slave
       hdd.

       General	IDE block device names have the form hdX, or hdXP, where X is a letter denoting the physical drive, and P is a number denoting the
       partition on that physical drive.  The first form, hdX, is used to address the whole drive.  Partition numbers are assigned  in	the  order
       the  partitions	are  discovered,  and only nonempty, nonextended partitions get a number.  However, partition numbers 1-4 are given to the
       four partitions described in the MBR (the "primary" partitions), regardless of whether they are unused or extended.  Thus, the first  logi-
       cal  partition  will be hdX5.  Both DOS-type partitioning and BSD-disklabel partitioning are supported.	You can have at most 63 partitions
       on an IDE disk.

       For example, /dev/hda refers to all of the first IDE drive in the system; and /dev/hdb3 refers to the third DOS "primary" partition on  the
       second one.

       They are typically created by:

	      mknod -m 660 /dev/hda b 3 0
	      mknod -m 660 /dev/hda1 b 3 1
	      mknod -m 660 /dev/hda2 b 3 2
	      ...
	      mknod -m 660 /dev/hda8 b 3 8
	      mknod -m 660 /dev/hdb b 3 64
	      mknod -m 660 /dev/hdb1 b 3 65
	      mknod -m 660 /dev/hdb2 b 3 66
	      ...
	      mknod -m 660 /dev/hdb8 b 3 72
	      chown root:disk /dev/hd*

FILES

       /dev/hd*

SEE ALSO

       chown(1), mknod(1), sd(4), mount(8)

COLOPHON

       This  page is part of release 3.53 of the Linux man-pages project.  A description of the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.

Linux								    1992-12-17								     HD(4)
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