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I am having an issue where when I use the REST API to connect a snapshot = from another VM to a Backup-Appliance-VM, after the clone when I remove the Di= sk and delete the Snapshot, the disk remains in the Backup-Appliance-VM as /dev/sdb ot /dev/vdb. =20 If I reboot the Bakup-Applicance-VM the disk disappears. =20 If I manually remove the disk by "echo 1 > /sys/block/sdb/device/delete=B2 =
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disk will disappear, but if I rescan the scsi bus, it is found and shows = up again in the VM OS, but the oVirt WebGUI does NOT show it as connected.
=20 I am also not able to attach any other disks as it complains of : =20 HotPlugDiskVDS failed: internal error: unable to execute QEMU command '__com.redhat_drive_add': Duplicate ID 'drive-scsi0-0-0-2' for drive =20 I did see that others in the past have gotten around this issue by reboot= ing the Backup-Appliance-VM and then continuing on with the next VM backup an= d looping through backup-reboot-backup-reboot-etc. =20 Anyone have an idea on how to solve this issue and remove the hooks from =
-- The first part is expected - the 2nd isn't. What are you referring to as the first and second part? =20 the
guest OS? =20 Steps to reproduce this issue: =20 1. Create a backup appliance VM to be used for the backup script executio= n 2. Currently I have the Vms set to virtio with threaded I/O enabled. Also tried virtio_scsi with same result. 3. Using REST API =AD make snapshot of target VM 4. Using REST API =AD fetch vm metadata 5. Using REST API =AD attach the snapshot/disk to the Backup-Appliance-VM 6. dd the drive to backup folder 7. Using REST API =AD remove the disk from the Backup-Appliance-VM 8. Using REST API =AD delete the snapshot 9. ** Check the guest OS of the Backup-Appliance-VM and the mounted drive= from the backup above still appears and behaves as mentioned in comments above= . =20
=8B There are many details missing, including versions of everything used, bu= t logs would be most helpful here. =20 Versions for oVirt are all the most recent. This is a fresh install of the Hosted Engine. I will just script the backup to cycle through sdb, sdc, sdd= , =8A. Szzzz, just seems odd that once a disk is detached and a snapshot deleted, that the Backup_appliance-VM can still access the drive/snapshot?
A second issue is that the above wont work when I have the Vms running on= MPIO iSCSI storage, so for testing I have moved to NFS4. Anyone have ideas abo= ut either issue, I=B9d love to hear ;)
=8B Same - logs would be helpful here. I will continue to dig through this issue and will post logs if stuck. I just wanted to know if there was anything obvious that I should be doing differently with iSCSI vs NFS with mounting disks/snapshots. Zip =8B Y. =20
=20 Thanks =20 Irc.oftc.net <http://Irc.oftc.net> #ovirt zipur =20 =20 =20 _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users =20
--B_3599458335_122065993 Content-type: text/html; charset="ISO-8859-1" Content-transfer-encoding: quoted-printable <html><head></head><body style=3D"word-wrap: break-word; -webkit-nbsp-mode: s= pace; -webkit-line-break: after-white-space; color: rgb(0, 0, 0); font-size:= 14px; font-family: Calibri, sans-serif;"><div><div><div><br></div></div></d= iv><span id=3D"OLK_SRC_BODY_SECTION"><div><div><div dir=3D"ltr"><div class=3D"gmai= l_extra"><div class=3D"gmail_quote"><blockquote class=3D"gmail_quote" style=3D"mar= gin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style=3D"word= -wrap:break-word;color:rgb(0,0,0);font-size:14px;font-family:Calibri,sans-se= rif"><div>I am having an issue where when I use the REST API to connect a sn= apshot from another VM to a Backup-Appliance-VM, after the clone when I remo= ve the Disk and delete the Snapshot, the disk remains in the Backup-Applianc= e-VM as /dev/sdb ot /dev/vdb. </div><div><br></div><div>If I reboot the= Bakup-Applicance-VM the disk disappears.</div><div><br></div><div>If I manu= ally remove the disk by "echo 1 > /sys/block/sdb/device/delete” the= disk will disappear, but if I rescan the scsi bus, it is found and shows up= again in the VM OS, but the oVirt WebGUI does NOT show it as connected.</di= v></div></blockquote><div><br></div><div>-- The first part is expected - the= 2nd isn't.</div></div></div></div></div></div></span><div><br></div><div>Wh= at are you referring to as the first and second part? </div><div><br></= div><span id=3D"OLK_SRC_BODY_SECTION"><div><div><div dir=3D"ltr"><div class=3D"gma= il_extra"><div class=3D"gmail_quote"><div> </div><blockquote class=3D"gmail= _quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex= "><div style=3D"word-wrap:break-word;color:rgb(0,0,0);font-size:14px;font-fami= ly:Calibri,sans-serif"><div><br></div><div>I am also not able to attach any = other disks as it complains of :</div><div><br></div><div><span class=3D"m_-36= 70774818294595794Apple-tab-span" style=3D"white-space:pre-wrap"></span>HotPlug= DiskVDS failed: internal error: unable to execute QEMU command '__com.redhat= _drive_add': Duplicate ID 'drive-scsi0-0-0-2' for drive</div><div><br></div>= <div>I did see that others in the past have gotten around this issue by rebo= oting the Backup-Appliance-VM and then continuing on with the next VM backup= and looping through backup-reboot-backup-reboot-<wbr>etc. </div><div><= br></div><div>Anyone have an idea on how to solve this issue and remove the = hooks from the guest OS?</div><div><br></div><div>Steps to reproduce this is= sue:</div><div><br></div><ol><li>Create a backup appliance VM to be used for= the backup script execution</li><li>Currently I have the Vms set to virtio = with threaded I/O enabled. Also tried virtio_scsi with same result.</li><li>= Using REST API – make snapshot of target VM</li><li>Using REST API = 211; fetch vm metadata</li><li>Using REST API – attach the snapshot/di= sk to the Backup-Appliance-VM</li><li>dd the drive to backup folder</li><li>= Using REST API – remove the disk from the Backup-Appliance-VM</li><li>= Using REST API – delete the snapshot</li><li>** Check the guest OS of = the Backup-Appliance-VM and the mounted drive from the backup above still ap= pears and behaves as mentioned in comments above.</li></ol><div><br></div></= div></blockquote><div><br></div><div>— There are many details missing,= including versions of everything used, but logs would be most helpful here.= </div><div> </div></div></div></div></div></div></span><div>Versions fo= r oVirt are all the most recent. This is a fresh install of the Hosted Engin= e. I will just script the backup to cycle through sdb, sdc, sdd, …. Sz= zzz, just seems odd that once a disk is detached and a snapshot deleted, tha= t the Backup_appliance-VM can still access the drive/snapshot? </div><d= iv><br></div><div><br></div><span id=3D"OLK_SRC_BODY_SECTION"><div><div><div d= ir=3D"ltr"><div class=3D"gmail_extra"><div class=3D"gmail_quote"><blockquote class= =3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-l= eft:1ex"><div style=3D"word-wrap:break-word;color:rgb(0,0,0);font-size:14px;fo= nt-family:Calibri,sans-serif"><div></div><div>A second issue is that the abo= ve wont work when I have the Vms running on MPIO iSCSI storage, so for testi= ng I have moved to NFS4. Anyone have ideas about either issue, I’d lov= e to hear ;)</div></div></blockquote><div><br></div><div>— Same - logs= would be helpful here.</div></div></div></div></div></div></span><div><br><= /div><div>I will continue to dig through this issue and will post logs if st= uck. I just wanted to know if there was anything obvious that I should be do= ing differently with iSCSI vs NFS with mounting disks/snapshots.</div><div><= br></div><div>Zip</div><div><br></div><span id=3D"OLK_SRC_BODY_SECTION"><div><= div><div dir=3D"ltr"><div class=3D"gmail_extra"><div class=3D"gmail_quote"><div>&#= 8212; Y.</div><div> </div><blockquote class=3D"gmail_quote" style=3D"margin= :0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style=3D"word-wr= ap:break-word;color:rgb(0,0,0);font-size:14px;font-family:Calibri,sans-serif= "><div><br></div><div>Thanks</div><div><br></div><div><a href=3D"http://Irc.of= tc.net" target=3D"_blank">Irc.oftc.net</a> #ovirt</div><div>zipur</div><div><b= r></div><br></div><br> ______________________________<wbr>_________________<br> Users mailing list<br><a href=3D"mailto:Users@ovirt.org">Users@ovirt.org</a><= br><a href=3D"http://lists.ovirt.org/mailman/listinfo/users" rel=3D"noreferrer" = target=3D"_blank">http://lists.ovirt.org/<wbr>mailman/listinfo/users</a><br><b= r></blockquote></div><br></div></div></div></div></span></body></html> --B_3599458335_122065993--