Public bug reported:
My test environment are lvm/ISCSI, libvirt/QEMU
How to reproduce:
1. create instance
2 .create volume
3. attach volume to instance
4. pause instance
5. detach volume from instance
Nova will not disconnect with volume. You can enter following command to verify.
> sudo iscsiadm -m node --rescan
It will display the session which was build in previous steps.
Of course, you can also find device will still exist in /sys/block
Because of nova will search all block devices which are defined in xml for all
guest.
Then nova will disconnect ISCSI block which was existed in /dev/disk/by-path
and didn't been define in any guest.
But paused instance's xml define will still contain dev which prefer to remove.
Therefore nova will not disconnect with this volume.
There are two kind solution:
1. Logout iscsci connection manually. (sudo iscsiadm -m node -T Target --logout)
2. Reattach same volume.(lol)
But we still need to handle this bug with paused instance.
** Affects: nova
Importance: Undecided
Assignee: lyanchih (lyanchih)
Status: In Progress
** Changed in: nova
Assignee: (unassigned) => lyanchih (lyanchih)
** Changed in: nova
Status: New => In Progress
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https://bugs.launchpad.net/bugs/1476530
Title:
Iscsi session still connect after detach volume from paused instance
Status in OpenStack Compute (nova):
In Progress
Bug description:
My test environment are lvm/ISCSI, libvirt/QEMU
How to reproduce:
1. create instance
2 .create volume
3. attach volume to instance
4. pause instance
5. detach volume from instance
Nova will not disconnect with volume. You can enter following command to
verify.
> sudo iscsiadm -m node --rescan
It will display the session which was build in previous steps.
Of course, you can also find device will still exist in /sys/block
Because of nova will search all block devices which are defined in xml for
all guest.
Then nova will disconnect ISCSI block which was existed in /dev/disk/by-path
and didn't been define in any guest.
But paused instance's xml define will still contain dev which prefer to
remove.
Therefore nova will not disconnect with this volume.
There are two kind solution:
1. Logout iscsci connection manually. (sudo iscsiadm -m node -T Target
--logout)
2. Reattach same volume.(lol)
But we still need to handle this bug with paused instance.
To manage notifications about this bug go to:
https://bugs.launchpad.net/nova/+bug/1476530/+subscriptions
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