ibm-z-501 login: [   74.516498] Running test [R:13307478 T:43 - Storage - multip 
ath mapping test - Kernel: 6.2.0-0.rc6.44.test.fc38.s390x]                       
[   75.622627] scsi_debug:sdebug_driver_probe: scsi_debug: trim poll_queues to 0 
. poll_q/nr_hw = (0/1)                                                           
[   75.622643] scsi host0: scsi_debug: version 0191 [20210520]                   
[   75.622643]   dev_size_mb=1024, opts=0x0, submit_queues=1, statistics=0       
[   75.622914] scsi 0:0:0:0: Direct-Access     Linux    scsi_debug       0191 PQ 
: 0 ANSI: 7                                                                      
[   75.623187] scsi 0:0:0:0: Attached scsi generic sg0 type 0                    
[   75.623435] sd 0:0:0:0: Power-on or device reset occurred                     
[   75.643525] sd 0:0:0:0: [sda] 2097152 512-byte logical blocks: (1.07 GB/1.00  
GiB)                                                                             
[   75.653560] sd 0:0:0:0: [sda] Write Protect is off                            
[   75.673609] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, supp 
orts DPO and FUA                                                                 
[   75.703760] sd 0:0:0:0: [sda] Preferred minimum I/O size 512 bytes            
[   75.703768] sd 0:0:0:0: [sda] Optimal transfer size 524288 bytes              
[   75.826508] sd 0:0:0:0: [sda] Attached SCSI disk                              
[   76.257594] device-mapper: multipath service-time: version 0.3.0 loaded       
[   78.969264] dm-1: detected capacity change from 2097152 to 0                  
[   86.035892] sd 0:0:0:0: [sda] Synchronizing SCSI cache