[Qemu-devel] [Bug 1261320] [NEW] Virtual Disk with over 16TB

[Qemu-devel] [Bug 1261320] [NEW] Virtual Disk with over 16TB

[Chris Weltzien]

Public bug reported:

Hi,

is there a option to create a disk for a vm with a size over 16TB.

the problem that after the diskfile reach 16TB, the disk get a state of read-only at this limit.
I know, that 16TB file size is max, is there a option to create the disk in mutliple files?
we want to use 22 TB. in the VM 

To attach a partition directly to the vm, is not what we want to do.

best regards

Chris

** Affects: qemu
     Importance: Undecided
         Status: New


** Tags: img qemu

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1261320

Title:
  Virtual Disk with over 16TB

Status in QEMU:
  New

Bug description:
  Hi,

  is there a option to create a disk for a vm with a size over 16TB.

  the problem that after the diskfile reach 16TB, the disk get a state of read-only at this limit.
  I know, that 16TB file size is max, is there a option to create the disk in mutliple files?
  we want to use 22 TB. in the VM 

  To attach a partition directly to the vm, is not what we want to do.

  best regards

  Chris

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1261320/+subscriptions

Re: [Qemu-devel] [Bug 1261320] [NEW] Virtual Disk with over 16TB

[Stefan Hajnoczi]

On Mon, Dec 16, 2013 at 09:37:34AM -0000, Chris Weltzien wrote:
> is there a option to create a disk for a vm with a size over 16TB.
> 
> the problem that after the diskfile reach 16TB, the disk get a state of read-only at this limit.
> I know, that 16TB file size is max, is there a option to create the disk in mutliple files?
> we want to use 22 TB. in the VM 

Basically no, not in a clean way for a production VM.  Can you attach
multiple disks to the guest and then use software RAID0 or LVM to get a
22 TB device inside the guest?

If not, here are some options:
1. Switch to a different file system (XFS is your best bet)
2. Use LVM (and get a slight performance boost for free!)
3. Tweak file system settings (e.g. bigger block size may allow larger
files)

Stefan

[Qemu-devel] [Bug 1261320] Re: Virtual Disk with over 16TB

[Chris Weltzien]

Hi Stefan,

thank you for your response.

We're decided to only use 16Tb as vhd for the system.


best regards

Chris

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1261320

Title:
  Virtual Disk with over 16TB

Status in QEMU:
  New

Bug description:
  Hi,

  is there a option to create a disk for a vm with a size over 16TB.

  the problem that after the diskfile reach 16TB, the disk get a state of read-only at this limit.
  I know, that 16TB file size is max, is there a option to create the disk in mutliple files?
  we want to use 22 TB. in the VM 

  To attach a partition directly to the vm, is not what we want to do.

  best regards

  Chris

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1261320/+subscriptions

[Qemu-devel] [Bug 1261320] Re: Virtual Disk with over 16TB

[Thomas Huth]

** Changed in: qemu
       Status: New => Won't Fix

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1261320

Title:
  Virtual Disk with over 16TB

Status in QEMU:
  Won't Fix

Bug description:
  Hi,

  is there a option to create a disk for a vm with a size over 16TB.

  the problem that after the diskfile reach 16TB, the disk get a state of read-only at this limit.
  I know, that 16TB file size is max, is there a option to create the disk in mutliple files?
  we want to use 22 TB. in the VM 

  To attach a partition directly to the vm, is not what we want to do.

  best regards

  Chris

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1261320/+subscriptions