Out of Space - Ubuntu Linux 14.04

handsofqwerty

I'm having an issue with my Plex server that ran out of space.

Filesystem                           Size  Used Avail Use% Mounted on
/dev/mapper/plex--server--vg-root     18G   17G   12M 100% /
none                                 4.0K     0  4.0K   0% /sys/fs/cgroup
udev                                 2.0G  4.0K  2.0G   1% /dev
tmpfs                                396M  716K  395M   1% /run
none                                 5.0M     0  5.0M   0% /run/lock
none                                 2.0G  4.0K  2.0G   1% /run/shm
none                                 100M     0  100M   0% /run/user
/dev/sda1                            236M   55M  169M  25% /boot
overflow                             1.0M     0  1.0M   0% /tmp

My root folder on /dev/mapper is full and it's causing issues with my Plex server. I tried adding a second virtual HDD to the VM which I thin provisioned instead of thick provisioned. Is there any way to fix this without a full reinstall of Linux? If I do that on the new HDD, I could restore from backups but that's a pain if there is an easier way...

scottalanmiller

Add the new space to the VG. Then extend the LV and then the file system.

scottalanmiller

That your underlying block device is thick or thin is irrelevant to the OS. It's just a block device

handsofqwerty

@scottalanmiller said:

Add the new space to the VG. Then extend the LV and then the file system.

Ok, how do I do that? Also, I don't see anything being mounted as a new drive. Do I need to format it I assume? How do I do this via CLI?

scottalanmiller

No. You don't format it. That would defeat the purpose.

handsofqwerty

This is what my system shows...

root@plex-server:/dev/disk/by-path# lshw -class disk
  *-disk:0
	   description: SCSI Disk
	   physical id: 0.0.0
	   bus info: scsi@2:0.0.0
	   logical name: /dev/sda
	   size: 20GiB (21GB)
	   capabilities: partitioned partitioned:dos
	   configuration: sectorsize=512 signature=00096de5
  *-disk:1
	   description: SCSI Disk
	   physical id: 0.1.0
	   bus info: scsi@2:0.1.0
	   logical name: /dev/sdb
	   size: 25GiB (26GB)
	   configuration: sectorsize=512
  *-cdrom
	   description: DVD-RAM writer
	   physical id: 0.0.0
	   bus info: scsi@1:0.0.0
	   logical name: /dev/cdrom
	   logical name: /dev/sr0
	   capabilities: audio cd-r cd-rw dvd dvd-r dvd-ram partitioned partitioned:dos
	   configuration: signature=740c8043 status=ready

scottalanmiller

And no you should not see it anywhere.

handsofqwerty

The new disc is /dev/sdb

scottalanmiller

use fdisk or parted to find the name of the new block device.

handsofqwerty

Is this what I need to follow?

http://www.cyberciti.biz/faq/linux-disk-format/

scottalanmiller

Then do....

pvcreate /dev/sdb

To get started.

scottalanmiller

@handsofqwerty said:

Is this what I need to follow?

http://www.cyberciti.biz/faq/linux-disk-format/

Well I would assume not since formatting is exactly what you want to avoid.

scottalanmiller

Once you have pvcreated, use vgextend to add the new block device to your existing VG.

Look up the details with vgs

handsofqwerty

@scottalanmiller said:

Once you have pvcreated, use vgextend to add the new block device to your existing VG.

Look up the details with vgs

This is what I got.

root@plex-server:~# pvcreate /dev/sdb
  Physical volume "/dev/sdb" successfully created
  
root@plex-server:~# vgs
  VG             #PV #LV #SN Attr   VSize  VFree
  plex-server-vg   1   2   0 wz--n- 19.76g 20.00m

handsofqwerty

So basically, now what?

scottalanmiller

I think.....

vgextend plex-server-vg /dev/sdb

handsofqwerty

@scottalanmiller said:

I think.....

vgextend plex-server-vg /dev/sdb

Do I need to reboot?

handsofqwerty

@scottalanmiller said:

I think.....

vgextend plex-server-vg /dev/sdb

root@plex-server:~# vgextend plex-server-vg /dev/sdb
  Volume group "plex-server-vg" successfully extended

handsofqwerty

I was able to tab complete the plex-server-vg after typing vgextend, so I'm pretty sure that's right.

handsofqwerty

This is what I have currently...

root@plex-server:~# vgs
  VG             #PV #LV #SN Attr   VSize  VFree
  plex-server-vg   2   2   0 wz--n- 44.75g 25.02g
root@plex-server:~# df -h
Filesystem                           Size  Used Avail Use% Mounted on
/dev/mapper/plex--server--vg-root     18G   17G  332K 100% /
none                                 4.0K     0  4.0K   0% /sys/fs/cgroup
udev                                 2.0G  4.0K  2.0G   1% /dev
tmpfs                                396M  712K  395M   1% /run
none                                 5.0M     0  5.0M   0% /run/lock
none                                 2.0G  4.0K  2.0G   1% /run/shm
none                                 100M     0  100M   0% /run/user
/dev/sda1                            236M   55M  169M  25% /boot
overflow                             1.0M   16K 1008K   2% /tmp