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 NETBSD
fssconfig
FSSCONFIG(8) BSD System Manager's Manual FSSCONFIG(8)
NAME
fssconfig -- configure file system snapshot devices
SYNOPSIS
fssconfig [-cxv] device path backup [cluster [size]]
fssconfig -u [-v] device
fssconfig -l [-v] [device]
DESCRIPTION
The fssconfig command configures file system snapshot pseudo disk devices. It will associate the file system snapshot disk device with a
snapshot of path allowing the latter to be accessed as though it were a disk.
If backup resides on the snapshotted file system a persistent snapshot will be created. This snapshot is active until backup is unlinked.
This snapshot mode is only supported for ffs files systems.
Otherwise data written through the path will be saved in backup. If backup is a regular file, it will be created with length size. Default
size is the size of path. Data is saved to backup in units of cluster bytes.
Options indicate an action to be performed:
-c Configures the device. If successful, references to device will access the contents of path at the time the snapshot was taken. If
backup is a directory, a temporary file will be created in this directory. This file will be unlinked on exit.
-l List the snapshot devices and indicate which ones are in use. If a specific device is given, then only that will be described.
-u Unconfigures the device.
-v Be more verbose listing the snapshot devices.
-x Unlink backup after the device is configured.
If no action option is given, -c is assumed.
FILES
/dev/rfss?
/dev/fss?
EXAMPLES
fssconfig fss0 /usr /tmp/back
Configures the snapshot device fss0 for a snapshot of the /usr file system. Data written through /usr will be backed up in /tmp/back.
fssconfig fss1 / /dev/rsd0e 8192
Configures the snapshot device fss1 for a snapshot of the / file system. Data written through / will be backed up in /dev/rsd0e. The backup
will take place in units of 8192 bytes.
fssconfig -u fss0
Unconfigures the fss0 device.
SEE ALSO
opendisk(3), fss(4), mount(8), umount(8)
HISTORY
The fssconfig command appeared in NetBSD 2.0.
BSD
June 11, 2012 BSD