[  711.774957] Running test [R:13340712 T:54 - Storage - multipath mapping test - Kernel: 6.2.0-rc6] 
[  715.018486] scsi_debug:sdebug_driver_probe: scsi_debug: trim poll_queues to 0. poll_q/nr_hw = (0/1) 
[  715.019416] scsi host4: scsi_debug: version 0191 [20210520] 
[  715.019416]   dev_size_mb=1024, opts=0x0, submit_queues=1, statistics=0 
[  715.020548] scsi 4:0:0:0: Direct-Access     Linux    scsi_debug       0191 PQ: 0 ANSI: 7 
[  715.021780] sd 4:0:0:0: Attached scsi generic sg3 type 0 
[  715.021861] sd 4:0:0:0: Power-on or device reset occurred 
[  715.024568] sd 4:0:0:0: [sdb] 2097152 512-byte logical blocks: (1.07 GB/1.00 GiB) 
[  715.026558] sd 4:0:0:0: [sdb] Write Protect is off 
[  715.029362] sd 4:0:0:0: [sdb] Write cache: enabled, read cache: enabled, supports DPO and FUA 
[  715.033688] sd 4:0:0:0: [sdb] Preferred minimum I/O size 512 bytes 
[  715.034439] sd 4:0:0:0: [sdb] Optimal transfer size 524288 bytes 
[  715.056547] sd 4:0:0:0: [sdb] Attached SCSI disk 
[  715.181772] device-mapper: multipath service-time: version 0.3.0 loaded 
[  718.470450] dm-1: detected capacity change from 2097152 to 0 
[  728.785597] sd 4:0:0:0: [sdb] Synchronizing SCSI cache