Out of Space - Ubuntu Linux 14.04
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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 -
And no you should not see it anywhere.
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The new disc is /dev/sdb
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use fdisk or parted to find the name of the new block device.
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Is this what I need to follow?
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Then do....
pvcreate /dev/sdbTo get started.
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@handsofqwerty said:
Is this what I need to follow?
Well I would assume not since formatting is exactly what you want to avoid.
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Once you have pvcreated, use vgextend to add the new block device to your existing VG.
Look up the details with vgs
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@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 -
So basically, now what?
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I think.....
vgextend plex-server-vg /dev/sdb -
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@scottalanmiller said:
I think.....
vgextend plex-server-vg /dev/sdbroot@plex-server:~# vgextend plex-server-vg /dev/sdb Volume group "plex-server-vg" successfully extended -
I was able to tab complete the plex-server-vg after typing vgextend, so I'm pretty sure that's right.
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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 -
So you can see that you now have 25GB free.
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Now you need to lvextend to 100%free
I'm on a plane. You will need to Google the syntax.
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Ok, I was able to figure it out. Here is the final results:
What I used to get info:
root@plex-server:/dev# lvs LV VG Attr LSize Pool Origin Data% Move Log Copy% Convert root plex-server-vg -wi-ao--- 17.74g swap_1 plex-server-vg -wi-ao--- 2.00g root@plex-server:/dev# vgs VG #PV #LV #SN Attr VSize VFree plex-server-vg 2 2 0 wz--n- 44.75g 25.02gThe command I ran to extend the logical volume and the file system together and the results:
root@plex-server:/dev# lvextend -r plex-server-vg/root /dev/sdb Extending logical volume root to 42.74 GiB Logical volume root successfully resized resize2fs 1.42.9 (4-Feb-2014) Filesystem at /dev/mapper/plex--server--vg-root is mounted on /; on-line resizing required old_desc_blocks = 2, new_desc_blocks = 3 The filesystem on /dev/mapper/plex--server--vg-root is now 11203584 blocks long. root@plex-server:/dev# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/plex--server--vg-root 42G 17G 24G 42% / 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 16K 1008K 2% /tmpThanks so much for your help and guidance @scottalanmiller ! I learned a lot today!
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Now, @scottalanmiller, one more question...the new virtual HDD is thin provisioned, so if I needed to expand it further, I can do it easily. Would I have to run lvextend again if I expand that drive in VMware? I assume so but are just curious. Thanks!
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@handsofqwerty said:
Now, @scottalanmiller, one more question...the new virtual HDD is thin provisioned, so if I needed to expand it further, I can do it easily. Would I have to run lvextend again if I expand that drive in VMware? I assume so but are just curious. Thanks!
Yes, expanding or growing underlying block storage will not make volume managers or file systems on top grow too. The system has no way to know how you want the new storage to be used, so you would not want this. What if you wanted to add a new filesystem, for example, you would take the same action but would be pretty surprised if you found that that was automatically added to an already existing filesystem.
In a case like yours, it feels like the layers of expansion are obvious and you would "just want that." BUt if you were doing other tasks with the storage you would be like "oh, yeah, it can't make that judgement call for me."
