https://bugzilla.kernel.org/show_bug.cgi?id=196493 Bug ID: 196493 Summary: When LUN assignments on the target was changed, event must be triggered Product: IO/Storage Version: 2.5 Kernel Version: 3.13…4.4 and probably all other Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: SCSI Assignee: linux-scsi@xxxxxxxxxxxxxxx Reporter: ds@xxxxxxxx Regression: No 1. The (e.g. SAN) device is unmapped and then the same LUN is reused by other WWN, but no actions taken on linux-side. 2. Kernel receives indication and claims "Kernel: [15671249.097583] sd 8:0:15:9: Warning! Received an indication that the LUN assignments on this target have changed. The Linux SCSI layer does not automatically remap LUN assignments." 3. Observe no further actions at kernel-side. ioctl (requested via blockdev) returns parameters of unmapped LUN. Expect at least to cock the trigger on respective device (like mapped to sysfs "/sys/block/sd*/device/evt_lun_change_reported") and thus provide the mechanism to inform device mapper. In perspective, the feature of auto-invalidation and rescan on changed path. -- You are receiving this mail because: You are the assignee for the bug.
