Description of problem:
Pure Storage by default uses peripheral addressing for LUN ID < 256 while it uses flat addressing for LUN >= 256 .
When peripheral addressing is used then LUN IDs presented in iscsi portals on the storage equipment look exactly same as LUN IDs.
0x0001 > LUN 1
0x000a > LUN 10
0x0021 > LUN 33
On the other hand, when flat addressing is used, LUN IDs look like having additional 0x400. This is based on the SAM-4 01b method of LUN addressing that Pure Storage uses that adds 0x4000 as a flag to indicate that it is using flat addressing.
0x4100 > LUN 256
0x4104 > LUN 260
0x4110 > LUN 272
However a problem is that RHEL doesn't treat that 0x4000 separately but it mixes up it with the raw LUN ID.
This means that if RHEL scans a volume with ID >= 256, it can't use the raw LUN ID but need to increase it by 16384 so that device can be detected as expected.
$ echo '0 0 220' | sudo tee -a /sys/class/scsi_host/host<host>/scan
-> This works because LUN ID < 256
$ echo '0 0 261' | sudo tee -a /sys/class/scsi_host/host<host>/scan
-> This doesn't work because LUN ID >= 256
$ echo '0 0 16645' | sudo tee -a /sys/class/scsi_host/host<host>/scan
-> This works because 261 + 16384 = 16645
Currently os-brick is not aware of this behavior.
The pure storage driver returns a raw lun id (like 261) even when lun id is greater than 255, and os-brick uses that raw lun id, and RHEL can't detect the scsi device properly.
How reproducible:
Always
Steps to Reproduce:
1. Create a volume with LUN ID > 255
2. Attach a volume to an instance
Actual results:
At some point, we stop discovering new volumes. It looks like /sys/class/scsi_host/host13/device/session7/target13:0:0/ targets goes from 13:0:0:1 to 13:0:0:255 and after that, no new luns can be mapped to the compute server. If we run "iscsiadm -m session --rescan", these LUNS will show up but instead of the expected 13:0:0:256 or 13:0:0:386, we'll have something like 13:0:0:16640.
Note that manually mounitng the volume with large LUN ID, outsode of os-brick, on the compute server succeeds, so RHEL can handle the 0x400 (bit-14) flag.
Expected results:
Volume attachment succeeds even if LUN ID > 255 and flat addressing is used.
Log files showing failure in os-brick:
cinder volume:
2023-02-03 18:16:53.740 86 DEBUG cinder.volume.drivers.pure [req-b4b278be-7356-469e-bd39-e5966cbc17a4 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Response for HTTP request [9594d706fe3c41419c99ff658e251e35]: '{'name': 'volume-0e402c43-9643-48bc-a99f-c4c11780ce38-cinder', 'created': '2023-02-03T18:01:38Z', 'source': None, 'serial': '39ACC4A0B3D148F10001E4B3', 'size': 107374182400}' wrapper /usr/lib/python3.6/site-packages/cinder/volume/drivers/pure.py:1484
2023-02-03 18:16:53.740 86 DEBUG cinder.volume.drivers.pure [req-b4b278be-7356-469e-bd39-e5966cbc17a4 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] [VAN3-A-C010-ST-P10] Leave PureISCSIDriver.initialize_connection, ret={'driver_volume_type': 'iscsi', 'data': {'target_discovered': False, 'discard': True, 'target_luns': [356, 356, 356, 356], 'target_iqns': ['iqn.2010-06.com.purestorage:flasharray.41be720d4041897f', 'iqn.2010-06.com.purestorage:flasharray.41be720d4041897f', 'iqn.2010-06.com.purestorage:flasharray.41be720d4041897f', 'iqn.2010-06.com.purestorage:flasharray.41be720d4041897f'], 'target_portals': ['10.250.50.237:3260', '10.250.50.238:3260', '10.250.50.239:3260', '10.250.50.240:3260'], 'wwn': '3624a937039acc4a0b3d148f10001e4b3'}} wrapper /usr/lib/python3.6/site-packages/cinder/volume/drivers/pure.py:181
2023-02-03 18:16:53.924 86 INFO cinder.volume.manager [req-b4b278be-7356-469e-bd39-e5966cbc17a4 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] attachment_update completed successfully.
nvoa compute:
2023-02-03 18:00:39.385 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Scanning host 11 c: 0, t: 0, l: 356) scan_iscsi /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:706
2023-02-03 18:00:39.397 8 DEBUG os_brick.initiator.connectors.iscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] iscsiadm ('-m', 'session'): stdout=tcp: [5] 10.250.50.237:3260,1 iqn.2010-06.com.purestorage:flasharray.41be720d4041897f (non-flash)
tcp: [6] 10.250.50.238:3260,1 iqn.2010-06.com.purestorage:flasharray.41be720d4041897f (non-flash)
tcp: [7] 10.250.50.240:3260,1 iqn.2010-06.com.purestorage:flasharray.41be720d4041897f (non-flash)
tcp: [8] 10.250.50.239:3260,1 iqn.2010-06.com.purestorage:flasharray.41be720d4041897f (non-flash)
stderr= _run_iscsiadm_bare /usr/lib/python3.6/site-packages/os_brick/initiator/connectors/iscsi.py:1144
2023-02-03 18:00:39.398 8 DEBUG os_brick.initiator.connectors.iscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] iscsi session list stdout=tcp: [5] 10.250.50.237:3260,1 iqn.2010-06.com.purestorage:flasharray.41be720d4041897f (non-flash)
tcp: [6] 10.250.50.238:3260,1 iqn.2010-06.com.purestorage:flasharray.41be720d4041897f (non-flash)
tcp: [7] 10.250.50.240:3260,1 iqn.2010-06.com.purestorage:flasharray.41be720d4041897f (non-flash)
tcp: [8] 10.250.50.239:3260,1 iqn.2010-06.com.purestorage:flasharray.41be720d4041897f (non-flash)
stderr= _run_iscsi_session /usr/lib/python3.6/site-packages/os_brick/initiator/connectors/iscsi.py:1133
2023-02-03 18:00:39.398 8 DEBUG os_brick.initiator.connectors.iscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Connected to 10.250.50.238:3260 _connect_vol /usr/lib/python3.6/site-packages/os_brick/initiator/connectors/iscsi.py:651
2023-02-03 18:00:39.399 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] HCTL ('12', '0', '0', 356) found on session 6 with lun 356 get_hctl /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:678
2023-02-03 18:00:39.400 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Scanning host 12 c: 0, t: 0, l: 356) scan_iscsi /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:706
2023-02-03 18:00:39.407 8 DEBUG os_brick.initiator.connectors.iscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] iscsiadm ('-m', 'session'): stdout=tcp: [5] 10.250.50.237:3260,1 iqn.2010-06.com.purestorage:flasharray.41be720d4041897f (non-flash)
tcp: [6] 10.250.50.238:3260,1 iqn.2010-06.com.purestorage:flasharray.41be720d4041897f (non-flash)
tcp: [7] 10.250.50.240:3260,1 iqn.2010-06.com.purestorage:flasharray.41be720d4041897f (non-flash)
tcp: [8] 10.250.50.239:3260,1 iqn.2010-06.com.purestorage:flasharray.41be720d4041897f (non-flash)
stderr= _run_iscsiadm_bare /usr/lib/python3.6/site-packages/os_brick/initiator/connectors/iscsi.py:1144
2023-02-03 18:00:39.407 8 DEBUG os_brick.initiator.connectors.iscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] iscsi session list stdout=tcp: [5] 10.250.50.237:3260,1 iqn.2010-06.com.purestorage:flasharray.41be720d4041897f (non-flash)
tcp: [6] 10.250.50.238:3260,1 iqn.2010-06.com.purestorage:flasharray.41be720d4041897f (non-flash)
tcp: [7] 10.250.50.240:3260,1 iqn.2010-06.com.purestorage:flasharray.41be720d4041897f (non-flash)
tcp: [8] 10.250.50.239:3260,1 iqn.2010-06.com.purestorage:flasharray.41be720d4041897f (non-flash)
stderr= _run_iscsi_session /usr/lib/python3.6/site-packages/os_brick/initiator/connectors/iscsi.py:1133
2023-02-03 18:00:39.408 8 DEBUG os_brick.initiator.connectors.iscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Connected to 10.250.50.239:3260 _connect_vol /usr/lib/python3.6/site-packages/os_brick/initiator/connectors/iscsi.py:651
2023-02-03 18:00:39.409 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] HCTL ('14', '0', '0', 356) found on session 8 with lun 356 get_hctl /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:678
2023-02-03 18:00:39.409 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Scanning host 14 c: 0, t: 0, l: 356) scan_iscsi /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:706
2023-02-03 18:00:39.432 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Searching for a device in session 5 and hctl ('11', '0', '0', 356) yield: None device_name_by_hctl /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:698
2023-02-03 18:00:39.433 8 DEBUG os_brick.initiator.connectors.iscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] iscsiadm ('-m', 'session'): stdout=tcp: [5] 10.250.50.237:3260,1 iqn.2010-06.com.purestorage:flasharray.41be720d4041897f (non-flash)
tcp: [6] 10.250.50.238:3260,1 iqn.2010-06.com.purestorage:flasharray.41be720d4041897f (non-flash)
tcp: [7] 10.250.50.240:3260,1 iqn.2010-06.com.purestorage:flasharray.41be720d4041897f (non-flash)
tcp: [8] 10.250.50.239:3260,1 iqn.2010-06.com.purestorage:flasharray.41be720d4041897f (non-flash)
stderr= _run_iscsiadm_bare /usr/lib/python3.6/site-packages/os_brick/initiator/connectors/iscsi.py:1144
2023-02-03 18:00:39.434 8 DEBUG os_brick.initiator.connectors.iscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] iscsi session list stdout=tcp: [5] 10.250.50.237:3260,1 iqn.2010-06.com.purestorage:flasharray.41be720d4041897f (non-flash)
tcp: [6] 10.250.50.238:3260,1 iqn.2010-06.com.purestorage:flasharray.41be720d4041897f (non-flash)
tcp: [7] 10.250.50.240:3260,1 iqn.2010-06.com.purestorage:flasharray.41be720d4041897f (non-flash)
tcp: [8] 10.250.50.239:3260,1 iqn.2010-06.com.purestorage:flasharray.41be720d4041897f (non-flash)
stderr= _run_iscsi_session /usr/lib/python3.6/site-packages/os_brick/initiator/connectors/iscsi.py:1133
2023-02-03 18:00:39.434 8 DEBUG os_brick.initiator.connectors.iscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Connected to 10.250.50.240:3260 _connect_vol /usr/lib/python3.6/site-packages/os_brick/initiator/connectors/iscsi.py:651
2023-02-03 18:00:39.435 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] HCTL ('13', '0', '0', 356) found on session 7 with lun 356 get_hctl /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:678
2023-02-03 18:00:39.436 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Scanning host 13 c: 0, t: 0, l: 356) scan_iscsi /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:706
...
2023-02-03 18:00:40.439 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Searching for a device in session 6 and hctl ('12', '0', '0', 356) yield: None device_name_by_hctl /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:698
2023-02-03 18:00:40.452 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Searching for a device in session 8 and hctl ('14', '0', '0', 356) yield: None device_name_by_hctl /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:698
2023-02-03 18:00:40.457 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Searching for a device in session 7 and hctl ('13', '0', '0', 356) yield: None device_name_by_hctl /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:698
2023-02-03 18:00:41.435 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Searching for a device in session 5 and hctl ('11', '0', '0', 356) yield: None device_name_by_hctl /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:698
2023-02-03 18:00:41.441 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Searching for a device in session 6 and hctl ('12', '0', '0', 356) yield: None device_name_by_hctl /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:698
2023-02-03 18:00:41.454 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Searching for a device in session 8 and hctl ('14', '0', '0', 356) yield: None device_name_by_hctl /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:698
2023-02-03 18:00:41.458 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Searching for a device in session 7 and hctl ('13', '0', '0', 356) yield: None device_name_by_hctl /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:698
2023-02-03 18:00:42.437 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Searching for a device in session 5 and hctl ('11', '0', '0', 356) yield: None device_name_by_hctl /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:698
2023-02-03 18:00:42.443 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Searching for a device in session 6 and hctl ('12', '0', '0', 356) yield: None device_name_by_hctl /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:698
2023-02-03 18:00:42.456 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Searching for a device in session 8 and hctl ('14', '0', '0', 356) yield: None device_name_by_hctl /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:698
2023-02-03 18:00:42.460 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Searching for a device in session 7 and hctl ('13', '0', '0', 356) yield: None device_name_by_hctl /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:698
2023-02-03 18:00:43.439 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Scanning host 11 c: 0, t: 0, l: 356) scan_iscsi /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:706
2023-02-03 18:00:43.444 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Scanning host 12 c: 0, t: 0, l: 356) scan_iscsi /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:706
2023-02-03 18:00:43.457 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Scanning host 14 c: 0, t: 0, l: 356) scan_iscsi /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:706
2023-02-03 18:00:43.461 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Scanning host 13 c: 0, t: 0, l: 356) scan_iscsi /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:706
2023-02-03 18:00:43.472 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Searching for a device in session 5 and hctl ('11', '0', '0', 356) yield: None device_name_by_hctl /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:698
2023-02-03 18:00:43.475 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Searching for a device in session 6 and hctl ('12', '0', '0', 356) yield: None device_name_by_hctl /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:698
2023-02-03 18:00:43.488 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Searching for a device in session 8 and hctl ('14', '0', '0', 356) yield: None device_name_by_hctl /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:698
2023-02-03 18:00:43.494 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Searching for a device in session 7 and hctl ('13', '0', '0', 356) yield: None device_name_by_hctl /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:698
2023-02-03 18:00:44.474 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Searching for a device in session 5 and hctl ('11', '0', '0', 356) yield: None device_name_by_hctl /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:698
2023-02-03 18:00:44.476 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Searching for a device in session 6 and hctl ('12', '0', '0', 356) yield: None device_name_by_hctl /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:698
2023-02-03 18:00:44.489 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Searching for a device in session 8 and hctl ('14', '0', '0', 356) yield: None device_name_by_hctl /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:698
2023-02-03 18:00:44.497 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Searching for a device in session 7 and hctl ('13', '0', '0', 356) yield: None device_name_by_hctl /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:698
2023-02-03 18:00:45.417 8 DEBUG oslo_service.periodic_task [req-06e6acfd-4697-4bb8-9b94-e88d60cc0aef - - - - -] Running periodic task ComputeManager._sync_scheduler_instance_info run_periodic_tasks /usr/lib/python3.6/site-packages/oslo_service/periodic_task.py:217
2023-02-03 18:00:45.475 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Searching for a device in session 5 and hctl ('11', '0', '0', 356) yield: None device_name_by_hctl /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:698
2023-02-03 18:00:45.477 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Searching for a device in session 6 and hctl ('12', '0', '0', 356) yield: None device_name_by_hctl /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:698
2023-02-03 18:00:45.491 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Searching for a device in session 8 and hctl ('14', '0', '0', 356) yield: None device_name_by_hctl /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:698
2023-02-03 18:00:45.506 8 DEBUG os_brick.initiator.linuxscsi [req-2b5c8045-6845-4b92-8f13-2370cf907a8c 2e8ba97a8559475c90aeaa503964f6c0 24d555e75c6c4c8cab66fa759953b547 - default default] Searching for a device in session 7 and hctl ('13', '0', '0', 356) yield: None device_name_by_hctl /usr/lib/python3.6/site-packages/os_brick/initiator/linuxscsi.py:698
2023-02-03 18:00:46.422 8 DEBUG oslo_service.periodic_task [req-06e6acfd-4697-4bb8-9b94-e88d60cc0aef - - - - -] Running periodic task ComputeManager._run_pending_deletes run_periodic_tasks /usr/lib/python3.6/site-packages/oslo_service/periodic_task.py:217
The reason of this is well explain in https:/ /bugzilla. redhat. com/show_ bug.cgi? id=1975368# c5