Add discard option after disk creation

[mgiammarco]

Hello,
I would like to change the "discard" option in some disks I have created some time ago on a ceph filesystem.
Is it possible? Is it safe?
Thanks,
Mario

 

[mgiammarco]

Hello again,
nobody can help me?
Did you never changed idea on discard feature after you created a disk?
Thanks,
Mario

 

[Nemesiz]

I`m not so sure of your situation but - If your VM is using not scsi disk and Windows VM dont have scsi driver then
1. Add new scsi disk.
2. Install driver.
3. Remove new disk.
4. Change manually driver option in config file

If you are talking about discard flag - you can change it with no worry.

 

[mgiammarco]

If you are talking about discard flag - you can change it with no worry.

I am talking about discard flag. I would like to change it but it is disabled from gui.

 

[dcsapak]

I am talking about discard flag. I would like to change it but it is disabled from gui.

then you use a disk controller type which does not support discard
this only works with scsi and virtio-scsi as controller