<html><body><div style="font-family: times new roman, new york, times, serif; font-size: 12pt; color: #000000"><div>I'm not sure I understand which RHEV version you're using now.<br></div><div>If you're using RHEV 3.5, it is possible to remove a snapshot of a single disk. </div><div>You can do it via webadmin, Under the 'Disks Snapshots' subtab of the relevant storage domain, in the 'Storage' main tab.<br></div><div><br></div><div>As for your second question, the free space has to be in the same storage domain.<br></div><hr id="zwchr"><div style="color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><b>From: </b>"Rik Theys" <Rik.Theys@esat.kuleuven.be><br><b>To: </b>"Elad Ben Aharon" <ebenahar@redhat.com><br><b>Cc: </b>users@ovirt.org<br><b>Sent: </b>Wednesday, 11 February, 2015 2:10:13 PM<br><b>Subject: </b>Re: [ovirt-users] Can't remove snapshot due to low disk space on storage domain?<br><div><br></div>Hi,<br><div><br></div>Thats unfortunate :-(. It would have been great if oVirt told me during <br>the creation of the snapshot that I would be unable to remove it later <br>due to unsufficient free space in the storage domain :-).<br><div><br></div>The VM has two disks - a small and a large one - so the snapshot <br>contains both. Can I still remove the large disk while it has snapshots?<br><div><br></div>Luckily the used disk space in the (preallocated) large disk is low <br>enough so I can fit it on another temporary disk then.<br><div><br></div>Does the free space have to be in the same storage domain, or can oVirt <br>use another storage domain for the temporary volume? IOW, can I add an <br>NFS storage domain which oVirt can use to create the temporary disk on?<br><div><br></div>Regards,<br><div><br></div>Rik<br><div><br></div><br>On 02/11/2015 12:57 PM, Elad Ben Aharon wrote:<br>> *equals or larger than the disk size<br>><br>> ------------------------------------------------------------------------<br>> *From: *"Elad Ben Aharon" <ebenahar@redhat.com><br>> *To: *"Rik Theys" <Rik.Theys@esat.kuleuven.be><br>> *Cc: *users@ovirt.org<br>> *Sent: *Wednesday, 11 February, 2015 12:18:35 PM<br>> *Subject: *Re: [ovirt-users] Can't remove snapshot due to low disk<br>> space on storage domain?<br>><br>> Snapshot removal (merge) includes a create volume phase. This volume is<br>> temporary and gets removed once the snapshot merge is completed. Its<br>> size is the size of the disk.<br>> That means that in order to remove the snapshot, the storage domain<br>> should have available size that is equal to the disk size.<br>><br>><br>><br>><br>><br>><br>><br>><br>><br>> Elad Ben Aharon<br>> RHEV-QE storage<br>><br>><br>> ------------------------------------------------------------------------<br>> *From: *"Rik Theys" <Rik.Theys@esat.kuleuven.be><br>> *To: *users@ovirt.org<br>> *Sent: *Tuesday, 10 February, 2015 12:00:10 PM<br>> *Subject: *[ovirt-users] Can't remove snapshot due to low disk space<br>> on storage domain?<br>><br>> Hi,<br>><br>> I'm running the ovirt engine 3.4 series. I've created a snapshot of a VM<br>> with an OS and data disk before upgrading the machine.<br>><br>> The upgrade went fine and I now want to remove the snapshot.<br>> Unfortunately this fails with the error:<br>><br>> "Cannot remove Snapshot. Low disk space on target Storage Domain<br>> stadius-virt2_PERC."<br>><br>> So I can't free disk space by removing the snapshot because I don't have<br>> enough space?<br>><br>> When I look at the VM the disks are shown as preallocated (which is what<br>> I selected during installation). When I look at the storage tab and list<br>> the disks in my storage domain, the disks are now shown as thin<br>> provisioned with the actual size > virtual size.<br>><br>> How can I remove this snapshot? I don't have enough free disk space in<br>> my storage domain to duplicate the data disk of my VM.<br>><br>> Regards,<br>><br>> Rik<br>><br>><br>> --<br>> Rik Theys<br>> System Engineer<br>> KU Leuven - Dept. Elektrotechniek (ESAT)<br>> Kasteelpark Arenberg 10 bus 2440 - B-3001 Leuven-Heverlee<br>> +32(0)16/32.11.07<br>> ----------------------------------------------------------------<br>> <<Any errors in spelling, tact or fact are transmission errors>><br>> _______________________________________________<br>> Users mailing list<br>> Users@ovirt.org<br>> http://lists.ovirt.org/mailman/listinfo/users<br>><br>><br>> _______________________________________________<br>> Users mailing list<br>> Users@ovirt.org<br>> http://lists.ovirt.org/mailman/listinfo/users<br>><br><div><br></div><br>-- <br>Rik Theys<br>System Engineer<br>KU Leuven - Dept. Elektrotechniek (ESAT)<br>Kasteelpark Arenberg 10 bus 2440 - B-3001 Leuven-Heverlee<br>+32(0)16/32.11.07<br>----------------------------------------------------------------<br><<Any errors in spelling, tact or fact are transmission errors>><br></div><div><br></div></div></body></html>