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It seems Ubuntu is locking the media but not releasing/unlocking it
after un-mounting. Repro on Ubuntu 12.04 and 12.10 and 13.04.
• Attach .iso to DVD drive via Hyper-V management GUI.
• In the guest, mount the DVD media.
• Using HYPER-V management GUI, try to unattach the .iso from the DVD
drive.
Error: Media is currently locked by guest
• Inside the guest, issue command: umount /dev/sr0
• From HYPER-V management GUI, try to unattach the .iso from the DVD
drive.
Error: Media is currently locked by guest.
• Eject the DVD with the command: eject /dev/sr0
• HYPER-V management GUI shows no media attached to DVD rom.
• Using HYPER-V management GUI, attach a new .iso to DVD rom.
Error: Media is currently locked by guest.
We are looking into the Hyper-V to see if this is something locked by
the host. But so far we haven't been able to repro on CentOS 6.4 and
SLES11SP2. This seems to be a Ubuntu only issue. During initial
investigate, it seems SCSIOP_MEDIUM_REMOVAL (the emulated IDE translates
ATA command to this SCSI command and passes to the optical device
driver) is not getting passed or passed with incorrect parameters to the
host.
Note: Currently DVD is used only on provisioning and failure to release
will not result in provision failure. So this is not really a blocker on
Windows Azure.
** Affects: ubuntu
Importance: Undecided
Status: New
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DVD medium locked and not released by Ubuntu on Windows server 2012 and
OS133/134
https://bugs.launchpad.net/bugs/1177148
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