Hello, Greetings...! I am the Linux driver engineer for the PMC-Sierra driver team working on aacraid drivers. The Linux aacraid driver is connected with the SCSI upper layer driver modules (sd, sg, ....). We are using Linux sg3_utils tool package `sg_map` command to list mapping between sg and SCSI devices. When the enclosure cable is plugged out, the scsi device entries /dev/sd* being disappeared as expected. But, it still sees stale/dead sg device nodes. Did anybody seen this issue with some other vendor drivers ? I hope you can shed some light on the situation. Please see the details of this issue below: 1. Expander is connected to the Adaptec RAID HBA controller and the connected disk devices recognized by driver/OS. Executed sg_map command and it displays device mappings as expected. # sg_map /dev/sg0 /dev/sr0 /dev/sg1 /dev/sda /dev/sg2 /dev/sdb /dev/sg3 /dev/sdc /dev/sg4 /dev/sdd /dev/sg5 /dev/sde /dev/sg6 /dev/sdf /dev/sg7 /dev/sdg /dev/sg8 2. Plugged out SAS enclosure device cable When the enclosure SAS cable is plugged out, driver marks the SCSI device offline by setting SDV_OFFLINE to a OS SCSI upper layer "scsi_device_set_state" function. Executed sg_map command. I could see that SCSI device entries /dev/sd[b-g] being disappeared on executing "sg_map" command. But, sg_map still sees stale/dead device nodes /dev/sg[2-7]. # sg_map /dev/sg0 /dev/sr0 /dev/sg1 /dev/sda /dev/sg2 /dev/sg3 /dev/sg4 /dev/sg5 /dev/sg6 /dev/sg7 /dev/sg8 I am not sure if it's an expected behavior with this way of notifying OS SCSI upper layers (setting SDV_OFFLINE to "scsi_device_set_state" function). Is there a recommend way to notify OS SCSI upper layers ?? Please help. Sincerely, Mahesh -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
