Hello all,
I am just getting started with Proxmox and I apologise if I am missing something basic.
I have one 2TB hard drive for high-io operations. I created a storage pool using just this hard drive. I created one VM to use this storage pool - one disc created using lvmthin.
The storage in the VM grew to approx.0.9T and then it crashed with an IO error - the storage pool showed 100% usage.
I managed to mount the disk manually on the host using loopback
but found only 834242 MB used.
This was the volume group.
The only logical volume in the group was vm-100-disk-0.
unfortunately there is no point in digging any further here, because I then proceeded to think
would show me the free space on the volume ... #facepalm.
...and yeah, I deleted it.
It's not a big problem yet, luckily. I had only just set this up 2 days ago as a test. However, before I make the same mistakes all over again, where can I learn about how storage works, where can I get good insight into the storage used by my VMs and my disks, without being completely overwhelmed by too much info.
I have one server, with three hard drives, of which one is supposed to be reserved for one specific VM. I have used lvm thin provisioning before - notably in QubesOS - and by my reckoning, mypool should have only been 50% used. What am I missing?
thanks,
-c
PS I created the pool and vm on web interface using almost entirely defaults provided. Did not set up lvm manually.
I am just getting started with Proxmox and I apologise if I am missing something basic.
I have one 2TB hard drive for high-io operations. I created a storage pool using just this hard drive. I created one VM to use this storage pool - one disc created using lvmthin.
The storage in the VM grew to approx.0.9T and then it crashed with an IO error - the storage pool showed 100% usage.
I managed to mount the disk manually on the host using loopback
Code:
losetup --partscan /dev/loop1 /dev/mypool/vm-100-disk-0
mount /dev/loop1p1 ./tempThis was the volume group.
Code:
--- Volume group ---
VG Name mypool
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 7
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 0
Max PV 0
Cur PV 1
Act PV 1
VG Size <1.75 TiB
PE Size 4.00 MiB
Total PE 457854
Alloc PE / Size 457726 / <1.75 TiB
Free PE / Size 128 / 512.00 MiB
VG UUID iddikd-XGg6-9Zun-a0AB-Y1cS-Jflq-Yzhpf8The only logical volume in the group was vm-100-disk-0.
unfortunately there is no point in digging any further here, because I then proceeded to think
Code:
pvmsm free...and yeah, I deleted it.
It's not a big problem yet, luckily. I had only just set this up 2 days ago as a test. However, before I make the same mistakes all over again, where can I learn about how storage works, where can I get good insight into the storage used by my VMs and my disks, without being completely overwhelmed by too much info.
I have one server, with three hard drives, of which one is supposed to be reserved for one specific VM. I have used lvm thin provisioning before - notably in QubesOS - and by my reckoning, mypool should have only been 50% used. What am I missing?
thanks,
-c
PS I created the pool and vm on web interface using almost entirely defaults provided. Did not set up lvm manually.