After moving var to a new partition by the following commands, How can I see the old var ?
mkdir /var2
mount /dev/sda5 /var2
Sync your current var:
rsync -a /var/ /var2
Add the entry to /etc/fstab
/dev/sda5 /var ext4 defaults 2 2
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1only way: rename old var directory before restart init5 mode – cmak.fr Aug 14 '19 at 03:31
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I could mark it as answer and properly close the question if you can make an answer @cmak.fr – eugene Aug 18 '19 at 05:57
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answer is posted – cmak.fr Aug 18 '19 at 16:18
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Moving the /var directory to a new separate disk or partition and keep access to the old /var directory.
To 'see' an old var directory after fstab modificaton : rename the old var directory.
# Boot with init 1 single user mode
sudo init 1
# Prepare new VAR directory
mkdir /mnt/newvar
mount /dev/sda5 /mnt/newvar
cp -ax /var/* /mnt/newvar
# Rename old VAR
mv /var /old_var
# Remount the disk partition to /var
mkdir /var
umount /dev/sda5
mount /dev/sda5 /var
# Alter fstab to apply changes
#--> /dev/sda5 /var ext4 defaults 0 2
# Restart the multitask mode
init 5
cmak.fr
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If you have the new partition mounted on /var already, you can use a bind-mount:
sudo mount --bind / /mnt
This will mount your root-partition at /mnt without affecting the current mount-points, so when looking in /mnt, you will see the original directory contents.
Thus you will find the content of your "old" /var in /mnt/var now. If you want to remove the content of your "old" /var you can use
sudo rm -r /mnt/var/*
Unmount when your done with
sudo umount /mnt
mook765
- 15,925
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so when you have
/you can (double) mount your/' onto/mnt' for the second time? – eugene Aug 19 '19 at 06:31 -
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Please see https://askubuntu.com/questions/1161537/how-to-remove-files-hidden-under-tmp-mountpoint , a similar question. This solution is the elegant way. – mook765 Aug 19 '19 at 10:08