Restoring a smaller partition image to larger partition using dd

ddext4partition

I recently backed up an 11GB ext4 partition to a file using dd, repartitioned, and restored the file to a 40GB partition. parted now shows the partition as 40GB, Nautilus reads it as 11GB, and both list the drive as only having 2GB free.

Is this a filesystem issue or partition issue and how can I fix it without repartitioning to 11GB, dd'ing the file, and growing the partition?

Best Answer

If all is well up to that point then I think you just need to resize2fs the filesystem up to 40Gb:

resize2fs /dev/sdc1

where /dev/sdc1 is the name of your partition.

Took off the size as per womble's excellent comment below.

resize2fs will grow the filesystem when it's mounted. It can also shrink it but needs to be unmounted for that.

Related Solutions

Linux – Mounting a partition from a raw DD image file of a physical disk

The kpartx command will do all the work for you of detecting where the partitions exist and setting up loop devices with the appropriate offsets.

# kpartx -l /dev/ganderData/example-sysdisk
ganderData-example--sysdisk-1 : 0 497952 /dev/ganderData/example-sysdisk 63
ganderData-example--sysdisk-2 : 0 62412525 /dev/ganderData/example-sysdisk 498015

# kpartx -a /dev/ganderData/example-sysdisk
# mount /dev/mapper/ganderData-example--sysdisk-2 /mnt/tmp

Lvm – install Xenserver with larger local storage

From archy.net:

Type : fdisk -l

you’ll see the list of all volumes and hard drives, then :

Type : pvcreate /dev/sdb

sdb is my new volume

and then to configure it as a local storage :

Type : xe sr-create type=lvm content-type=user device-config:device=/dev/disk/by-id/scsi-SATA_ST3320620AS_5QF7QZZL name-label=”LOCAL SR”

scsi-SATA_ST3320620AS_5QF7QZZL is the name of my volume, you’ll have to change this value with your own, and name-label is the name you want to give to your local storage.

and this is it !

Remark : If your XenServer is a pool, you need to put it off, follow above steps and put back the XenServer in your pool.

Best Answer

Related Solutions

Linux – Mounting a partition from a raw DD image file of a physical disk

Lvm – install Xenserver with larger local storage

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