--_000_D86C48DF8800164BBE50B87623F7AC9585F500F2ln2wio001devtra_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable If I create a preallocated disk for a VM, I see the disk image file listing= as the size I requested (100G): cd /rhev/data-center/mnt/storage_host1:_vol_pa1__nas__01b__oVirt__prod__01/= 53560d43-874a-49c5-9c5a-8b90487c79f8/images/d97f7706-3662-40bf-9358-80e0dc5= 1bff4 root@ovirt_host> ls -l total 105064644 -rw-rw---- 1 vdsm kvm 107374182400 Aug 5 10:57 75c14559-e18f-4cc8-a3fe-bc0= de507720b -rw-rw---- 1 vdsm kvm 1048576 Aug 5 10:57 75c14559-e18f-4cc8-a3fe-bc0= de507720b.lease -rw-r--r-- 1 vdsm kvm 313 Aug 5 10:57 75c14559-e18f-4cc8-a3fe-bc0= de507720b.meta and the corresponding space used on disk matches root@ ovirt_host > du -sh * 101G 75c14559-e18f-4cc8-a3fe-bc0de507720b 1.1M 75c14559-e18f-4cc8-a3fe-bc0de507720b.lease 4.0K 75c14559-e18f-4cc8-a3fe-bc0de507720b.meta If I then migrate that storage (while the VM is shutdown) to a new storage = domain, the size on disk does not match the allocated size. In this case th= ere is nothing in the disk yet so it shows as 0. cd /rhev/data-center/mnt/storage_host2:_vol_pa1__ovirt__uatprod/1f2c2b48-1e= 77-4c98-a6da-5dc09b78cead/images/d97f7706-3662-40bf-9358-80e0dc51bff4 root@ ovirt_host> ls -l total 1032 -rw-rw---- 1 vdsm kvm 107374182400 Aug 5 11:06 75c14559-e18f-4cc8-a3fe-bc0= de507720b -rw-rw---- 1 vdsm kvm 1048576 Aug 5 11:06 75c14559-e18f-4cc8-a3fe-bc0= de507720b.lease -rw-r--r-- 1 vdsm kvm 313 Aug 5 11:06 75c14559-e18f-4cc8-a3fe-bc0= de507720b.meta root@ ovirt_host > du -sh * 0 75c14559-e18f-4cc8-a3fe-bc0de507720b 1.1M 75c14559-e18f-4cc8-a3fe-bc0de507720b.lease 4.0K 75c14559-e18f-4cc8-a3fe-bc0de507720b.meta oVirt still lists the disk as preallocated in the GUI but it is in fact thi= n provisioned. I see the same issue if I clone a preallocated VM. The size on disk ends up= being the equivalent of a thin-provisioned disk. I also had the issue when= importing VM's from an export domain when I had selected preallocated in t= he import dialog box. Is this a known issue? Should preallocated not mean preallocated on physica= l disk? Ovirt Engine is running 3.6.4.1-1.el6 The ovirt nodes are running: OS Version: RHEL - 7 - 2.1511.el7.centos.2.10 Kernel Version: 3.10.0 - 327.4.5.el7.x86_64 KVM Version: 2.3.0 - 31.el7_2.7.1 LIBVIRT Version: libvirt-1.2.17-13.el7_2.2 VDSM Version: vdsm-4.17.23.2-0.el7.centos SPICE Version: 0.12.4 - 15.el7 GlusterFS Version: [N/A] CEPH Version: librbd1-0.80.7-3.el7 Many thanks, Simon --_000_D86C48DF8800164BBE50B87623F7AC9585F500F2ln2wio001devtra_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable <html xmlns:v=3D"urn:schemas-microsoft-com:vml" xmlns:o=3D"urn:schemas-micr= osoft-com:office:office" xmlns:w=3D"urn:schemas-microsoft-com:office:word" = xmlns:m=3D"http://schemas.microsoft.com/office/2004/12/omml" xmlns=3D"http:= //www.w3.org/TR/REC-html40"> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"=
</o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co= urier New",serif">root@ ovirt_host > du -sh *<o:p></o:p></span></p> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co= urier New",serif">101G 75c14559-e18f-4cc8-a3fe-bc0de= 507720b<o:p></o:p></span></p> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co= urier New",serif">1.1M 75c14559-e18f-4cc8-a3fe-bc0de= 507720b.lease<o:p></o:p></span></p> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co= urier New",serif">4.0K 75c14559-e18f-4cc8-a3fe-bc0de= 507720b.meta<o:p></o:p></span></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">If I then migrate that storage (while the VM is shut= down) to a new storage domain, the size on disk does not match the allocate= d size. In this case there is nothing in the disk yet so it shows as 0.<o:p= </o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co= urier New",serif">cd /rhev/data-center/mnt/storage_host2:_vol_pa1__ovi= rt__uatprod/1f2c2b48-1e77-4c98-a6da-5dc09b78cead/images/d97f7706-3662-40bf-= 9358-80e0dc51bff4<o:p></o:p></span></p> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co= urier New",serif">root@ ovirt_host> ls -l<o:p></o:p></span></p> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co= urier New",serif">total 1032<o:p></o:p></span></p> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co= urier New",serif">-rw-rw---- 1 vdsm kvm 107374182400 Aug 5 11:06= 75c14559-e18f-4cc8-a3fe-bc0de507720b<o:p></o:p></span></p> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co= urier New",serif">-rw-rw---- 1 vdsm kvm = 1048576 Aug 5 11:06 75c14559-e18f-4cc8-a3fe-bc0de507720b.lease<o:p></= o:p></span></p> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co= urier New",serif">-rw-r--r-- 1 vdsm kvm &= nbsp; 313 Aug 5 11:06 75c14559-e18f-4cc8-a3fe-bc0de= 507720b.meta<o:p></o:p></span></p> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co= urier New",serif"><o:p> </o:p></span></p> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co= urier New",serif">root@ ovirt_host > du -sh *<o:p></o:p></span></p> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co= urier New",serif">0 75c14559-e18f-= 4cc8-a3fe-bc0de507720b<o:p></o:p></span></p> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co= urier New",serif">1.1M 75c14559-e18f-4cc8-a3fe-bc0de= 507720b.lease<o:p></o:p></span></p> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co= urier New",serif">4.0K 75c14559-e18f-4cc8-a3fe-bc0de= 507720b.meta<o:p></o:p></span></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">oVirt still lists the disk as preallocated in the GU= I but it is in fact thin provisioned.<o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">I see the same issue if I clone a preallocated VM. T= he size on disk ends up being the equivalent of a thin-provisioned disk. I = also had the issue when importing VM’s from an export domain when I h= ad selected preallocated in the import dialog box.<o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">Is this a known issue? Should preallocated not mean =
<meta name=3D"Generator" content=3D"Microsoft Word 15 (filtered medium)"> <style><!-- /* Font Definitions */ @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4;} @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0in; margin-bottom:.0001pt; font-size:11.0pt; font-family:"Calibri",sans-serif;} a:link, span.MsoHyperlink {mso-style-priority:99; color:#0563C1; text-decoration:underline;} a:visited, span.MsoHyperlinkFollowed {mso-style-priority:99; color:#954F72; text-decoration:underline;} span.EmailStyle17 {mso-style-type:personal-compose; font-family:"Calibri",sans-serif; color:windowtext;} span.gdol3hyccnd {mso-style-name:gdol3hyccnd;} .MsoChpDefault {mso-style-type:export-only; font-family:"Calibri",sans-serif;} @page WordSection1 {size:8.5in 11.0in; margin:1.0in 1.0in 1.0in 1.0in;} div.WordSection1 {page:WordSection1;} --></style><!--[if gte mso 9]><xml> <o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" /> </xml><![endif]--><!--[if gte mso 9]><xml> <o:shapelayout v:ext=3D"edit"> <o:idmap v:ext=3D"edit" data=3D"1" /> </o:shapelayout></xml><![endif]--> </head> <body lang=3D"EN-US" link=3D"#0563C1" vlink=3D"#954F72"> <div class=3D"WordSection1"> <p class=3D"MsoNormal">If I create a preallocated disk for a VM, I see the = disk image file listing as the size I requested (100G):<o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co= urier New",serif">cd /rhev/data-center/mnt/storage_host1:_vol_pa1__nas= __01b__oVirt__prod__01/53560d43-874a-49c5-9c5a-8b90487c79f8/images/d97f7706= -3662-40bf-9358-80e0dc51bff4<o:p></o:p></span></p> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co= urier New",serif">root@ovirt_host> ls -l<o:p></o:p></span></p> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co= urier New",serif">total 105064644<o:p></o:p></span></p> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co= urier New",serif">-rw-rw---- 1 vdsm kvm 107374182400 Aug 5 10:57= 75c14559-e18f-4cc8-a3fe-bc0de507720b<o:p></o:p></span></p> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co= urier New",serif">-rw-rw---- 1 vdsm kvm = 1048576 Aug 5 10:57 75c14559-e18f-4cc8-a3fe-bc0de507720b.lease<o:p></= o:p></span></p> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Co= urier New",serif">-rw-r--r-- 1 vdsm kvm &= nbsp; 313 Aug 5 10:57 75c14559-e18f-4cc8-a3fe-bc0de= 507720b.meta<o:p></o:p></span></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">and the corresponding space used on disk matches<o:p= preallocated on physical disk?<o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">Ovirt Engine is running 3.6.4.1-1.el6<o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">The ovirt nodes are running: <o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">OS Version: = ; &= nbsp; RHEL - 7 - 2.1511.el7.centos.2.10<o:p></o:p></p> <p class=3D"MsoNormal">Kernel Version: = 3.10.0 - 327.4.5.el7= .x86_64<o:p></o:p></p> <p class=3D"MsoNormal">KVM Version: &nb= sp; 2.3.0= - 31.el7_2.7.1<o:p></o:p></p> <p class=3D"MsoNormal">LIBVIRT Version: = libvirt-1.2.17-13.el7_2.2<= o:p></o:p></p> <p class=3D"MsoNormal">VDSM Version: &n= bsp; vdsm-4.17.23.2-0.el7.c= entos<o:p></o:p></p> <p class=3D"MsoNormal">SPICE Version: &= nbsp; 0.12.4 - 15.el7= <o:p></o:p></p> <p class=3D"MsoNormal">GlusterFS Version: &nbs= p; [N/A]<o:p></o:p></p> <p class=3D"MsoNormal">CEPH Version: &n= bsp; librbd1-0.= 80.7-3.el7<o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">Many thanks,<o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">Simon<o:p></o:p></p> </div> </body> </html> --_000_D86C48DF8800164BBE50B87623F7AC9585F500F2ln2wio001devtra_--