Ytdyklly

I enlarged LV swap from 1G to 4G. I also moved / and /home in a single PV to two different LVs, by shrinking LV root and create LV home on the freed space, and then following https://askubuntu.com/a/923943/1471

$ sudo mkdir /mnt/home

$ sudo mount /dev/mapper/lubuntu--vg-home  /mnt/home/

$ sudo cp -r /home/* /mnt/home/

$ sudo mv /home /home-orig

$ sudo mkdir /home

and modified /etc/fstab into the following content, where I renamed /dev/mapper/lubuntu--vg-swap_1 to /dev/mapper/lubuntu--vg-swap (because I have renamed LV from default name swap_1 to swap by lvrename), and add a line for mounting /dev/mapper/lubuntu--vg-home at /home.

$ cat /etc/fstab

# /etc/fstab: static file system information.

#

# Use 'blkid' to print the universally unique identifier for a

# device; this may be used with UUID= as a more robust way to name devices

# that works even if disks are added and removed. See fstab(5).

#

# <file system> <mount point>   <type>  <options>       <dump>  <pass>

/dev/mapper/lubuntu--vg-root /               ext4    errors=remount-ro 0       1

# /boot/efi was on /dev/sda1 during installation

UUID=0C1E-EE69  /boot/efi       vfat    umask=0077      0       1

/dev/mapper/lubuntu--vg-swap none            swap    sw              0       0

# my change:

/dev/mapper/lubuntu--vg-home /home               ext4    defaults 0       2

After I reboot, it seems that LV home is correctly mounted at /home:

$ pwd

/home/t

t@olive:~$ df .

Filesystem                   1K-blocks   Used Available Use% Mounted on

/dev/mapper/lubuntu--vg-home 425480640 180336 403617312   1% /home

but there are two problems

1. although I can still login in virtual console, I can't log in LXDE of Lubuntu.


2. 
   

   free shows that the swap size is still 1GB.

   
   
   

   $ free -h
   
                 total        used        free      shared  buff/cache   available
   
   Mem:           3.3G        196M        2.9G        5.3M        239M        2.9G
   
   Swap:          979M          0B        979M
   
   $ cat /proc/swaps 
   
   Filename                Type        Size    Used    Priority
   
   /dev/dm-1                               partition   1003516 0   -2
   
   $ ls /dev/mapper/ -la
   
   total 0
   
   drwxr-xr-x  2 root root     120 Feb 23 16:47 .
   
   drwxr-xr-x 22 root root    4260 Feb 23 16:47 ..
   
   crw-------  1 root root 10, 236 Feb 23 16:47 control
   
   lrwxrwxrwx  1 root root       7 Feb 23 16:52 lubuntu--vg-home -> ../dm-2
   
   lrwxrwxrwx  1 root root       7 Feb 23 16:52 lubuntu--vg-root -> ../dm-0
   
   lrwxrwxrwx  1 root root       7 Feb 23 16:52 lubuntu--vg-swap -> ../dm-1
   
   

   
   

How can I solve the problems? Thanks.

For starters your cp hasn't retained permissions or ownerships. Use cp -a instead of cp -r.

To be going on, you haven't resized swap itself, just the LV where swap is stored. You'll need to rerun mkswap.