Mike, > Zhengyuan Liu found an issue where failovers are taking a long time > with lots of devices (/dev/sdXYZ nodes). The problem is that iscsid > expects most nl operations to be fast (ignoring mem issues) and when > the session block code was written blocking a queue/scsi_device was > just setting some flag bits and state values more or less. Now a block > call will actually handle IO that has been sent to the driver, so it > can be expensive. When you add in more and more devices, then a > session block call will take longer and longer. > > This patchset moves the recovery and unbind operations to a per > session work queue instead of the mix or per session, host and module. Applied to 5.18/scsi-staging, thanks! -- Martin K. Petersen Oracle Linux Engineering
