kiwiflyer opened a new issue #4210:
URL: https://github.com/apache/cloudstack/issues/4210
##### ISSUE TYPE
* Bug Report
##### COMPONENT NAME
KVM plugin
##### CLOUDSTACK VERSION
4.13.1 and 4.14
##### CONFIGURATION
KVM with unmanaged ISCSI
##### OS / ENVIRONMENT
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Information about the environment if relevant, N/A otherwise
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##### SUMMARY
Change was introduced in
https://github.com/apache/cloudstack/commit/6baa598033fa3f78b5b0144275de8c1404f67f29
It adds a cleanup process for old iscsi connections. Unfortunately, it
doesn't appear to be scoped and makes the assumption that all iscsi is managed.
When working with a community member on slack who upgraded to 4.13.1 found that
it broke their unmanaged ISCSI storage.
##### STEPS TO REPRODUCE
Upgrade an unmanaged ISCSI based system to 4.13.1 and your iscsi will be
ripped out when the agent is started.
##### ACTUAL RESULTS
2020-07-14 21:50:21,607 DEBUG [kvm.resource.LibvirtConnection]
(Thread-6:null) (logid:) Looking for libvirtd connection at: qemu:///system
2020-07-14 21:50:21,610 DEBUG [kvm.storage.IscsiStorageCleanupMonitor]
(Thread-6:null) (logid:) found iscsi disk by cleanup thread, marking inactive:
/dev/disk/by-path/ip-192.168.10.10:3260-iscsi-iqn.2001-05.com.equallogic:0-1cb196-21b284232-40d0019858b5679f-cloudstack1-lun-0
2020-07-14 21:50:21,611 DEBUG [kvm.storage.IscsiStorageCleanupMonitor]
(Thread-6:null) (logid:) found 0 domains
2020-07-14 21:50:21,617 INFO [kvm.storage.IscsiStorageCleanupMonitor]
(Thread-6:null) (logid:) Cleaning up disk
/dev/disk/by-path/ip-192.168.10.10:3260-iscsi-iqn.2001-05.com.equallogic:0-1cb196-21b284232-40d0019858b5679f-cloudstack1-lun-0
2020-07-14 21:50:21,618 DEBUG [kvm.storage.IscsiAdmStorageAdaptor]
(Thread-6:null) (logid:) Executing: sudo iscsiadm -m node -T
iqn.2001-05.com.equallogic:0-1cb196-21b284232-40d0019858b5679f-cloudstack1 -p
192.168.10.10:3260 --logout
2020-07-14 21:50:21,623 DEBUG [kvm.storage.IscsiAdmStorageAdaptor]
(Thread-6:null) (logid:) Executing while with timeout : 3600000
2020-07-14 21:50:21,658 INFO [cloud.agent.Agent] (main:null) (logid:)
Connecting to host:192.168.1.108
2020-07-14 21:50:21,659 INFO [utils.nio.NioClient] (main:null) (logid:)
Connecting to 192.168.1.108:8250
2020-07-14 21:50:21,659 WARN [utils.nio.NioConnection] (main:null) (logid:)
Unable to connect to remote: is there a server running on port 8250
2020-07-14 21:50:21,759 DEBUG [kvm.storage.IscsiAdmStorageAdaptor]
(Thread-6:null) (logid:) Execution is successful.
2020-07-14 21:50:21,760 DEBUG [kvm.storage.IscsiAdmStorageAdaptor]
(Thread-6:null) (logid:) Logging out of session [sid: 1, target:
iqn.2001-05.com.equallogic:0-1cb196-21b284232-40d0019858b5679f-cloudstack1,
portal: 192.168.10.10,3260]
Logging out of session [sid: 2, target:
iqn.2001-05.com.equallogic:0-1cb196-21b284232-40d0019858b5679f-cloudstack1,
portal: 192.168.10.10,3260]
Logout of [sid: 1, target:
iqn.2001-05.com.equallogic:0-1cb196-21b284232-40d0019858b5679f-cloudstack1,
portal: 192.168.10.10,3260] successful.
Logout of [sid: 2, target:
iqn.2001-05.com.equallogic:0-1cb196-21b284232-40d0019858b5679f-cloudstack1,
portal: 192.168.10.10,3260] successful.
2020-07-14 21:50:21,761 DEBUG [kvm.storage.IscsiAdmStorageAdaptor]
(Thread-6:null) (logid:) Successfully logged out of iSCSI target
/iqn.2001-05.com.equallogic:0-1cb196-21b284232-40d0019858b5679f-cloudstack1/0
2020-07-14 21:50:21,761 DEBUG [kvm.storage.IscsiAdmStorageAdaptor]
(Thread-6:null) (logid:) Executing: sudo iscsiadm -m node -T
iqn.2001-05.com.equallogic:0-1cb196-21b284232-40d0019858b5679f-cloudstack1 -p
192.168.10.10:3260 -o delete
2020-07-14 21:50:21,762 DEBUG [kvm.storage.IscsiAdmStorageAdaptor]
(Thread-6:null) (logid:) Executing while with timeout : 3600000
2020-07-14 21:50:21,787 DEBUG [kvm.storage.IscsiAdmStorageAdaptor]
(Thread-6:null) (logid:) Execution is successful.
2020-07-14 21:50:21,788 DEBUG [kvm.storage.IscsiAdmStorageAdaptor]
(Thread-6:null) (logid:) Removed iSCSI target
/iqn.2001-05.com.equallogic:0-1cb196-21b284232-40d0019858b5679f-cloudstack1/0
2020-07-14 21:50:21,789 DEBUG [kvm.storage.IscsiAdmStorageAdaptor]
(Thread-6:null) (logid:) Executing: sudo blockdev --getsize64
/dev/disk/by-path/ip-192.168.10.10:3260-iscsi-iqn.2001-05.com.equallogic:0-1cb196-21b284232-40d0019858b5679f-cloudstack1-lun-0
2020-07-14 21:50:21,790 DEBUG [kvm.storage.IscsiAdmStorageAdaptor]
(Thread-6:null) (logid:) Executing while with timeout : 3600000
2020-07-14 21:50:21,813 DEBUG [kvm.storage.IscsiAdmStorageAdaptor]
(Thread-6:null) (logid:) Exit value is 1
2020-07-14 21:50:21,814 DEBUG [kvm.storage.IscsiAdmStorageAdaptor]
(Thread-6:null) (logid:) blockdev: cannot open
/dev/disk/by-path/ip-192.168.10.10:3260-iscsi-iqn.2001-05.com.equallogic:0-1cb196-21b284232-40d0019858b5679f-cloudstack1-lun-0:
No such file or directory
2020-07-14 21:50:21,814 WARN [kvm.storage.IscsiAdmStorageAdaptor]
(Thread-6:null) (logid:) Unable to retrieve the size of device (resource may
have moved to a different
host)/dev/disk/by-path/ip-192.168.10.10:3260-iscsi-iqn.2001-05.com.equallogic:0-1cb196-21b284232-40d0019858b5679f-cloudstack1-lun-0
~~~
At this point all the luns have been cleared out, even though the ISCSI luns
were not being managed by CloudStack.
@skattoju4 @GabrielBrascher
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