Re: Online disk resize with Qemu/KVM and Ceph

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And then in the windows vm
cmd
diskpart
Rescan

Linux vm
echo 1 >  /sys/class/scsi_device/2\:0\:0\:0/device/rescan (sda)
echo 1 >  /sys/class/scsi_device/2\:0\:3\:0/device/rescan (sdd)

 

I have this to, have to do this to:

virsh qemu-monitor-command vps-test2 --hmp "info block"
virsh qemu-monitor-command vps-test2 --hmp "block_resize 
drive-scsi0-0-0-0 12G"





-----Original Message-----
From: Gesiel Galvão Bernardes [mailto:gesiel.bernardes@xxxxxxxxx] 
Sent: 15 February 2019 12:59
To: ceph-users@xxxxxxxxxxxxxx
Subject:  Online disk resize with Qemu/KVM and Ceph

Hi,

I'm making a environment for VMs with qemu/kvm and Ceph using RBD, and 
I'm with the follow problem: The guest VM not recognizes disk resize 
(increase). The cenario is:

Host:
Centos 7.6
Libvirt 4.5
Ceph 13.2.4

I follow the following steps to increase the disk (ex: disk 10Gb  to 
20Gb):


# rbd resize --size 20480 mypool/vm_test # virsh blockresize --domain 
vm_test --path vda --size 20G

But after this steps, the disk in VM continue with original size. For 
apply the change, is necessary reboot VM. 
If I use local datastore instead Ceph, the VM recognize new size 
imediatally.

Does anyone have this?  Is this expected?


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