| Message ID | 20230922092906.2645265-1-haowenchao2@huawei.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | scsi:scsi_debug: Add error injection for single device | expand |
Doug, > The original error injection mechanism was based on scsi_host which > could not inject fault for a single SCSI device. > > This patchset provides the ability to inject errors for a single SCSI > device. Now we supports inject timeout errors, queuecommand errors, > and hostbyte, driverbyte, statusbyte, and sense data for specific SCSI > Command. Two new error injection is defined to make abort command or > reset LUN failed. Please review patches 7 through 10. Thank you!
The original error injection mechanism was based on scsi_host which could not inject fault for a single SCSI device. This patchset provides the ability to inject errors for a single SCSI device. Now we supports inject timeout errors, queuecommand errors, and hostbyte, driverbyte, statusbyte, and sense data for specific SCSI Command. Two new error injection is defined to make abort command or reset LUN failed. Besides error injection for single device, this patchset add a new interface to make reset target failed for each scsi_target. The first two patch add an debugfs interface to add and inquiry single device's error injection info; the third patch defined how to remove an injection which has been added. The following 5 patches use the injection info and generate the related error type. The last one just Add a new interface to make reset target failed. V5: - Using rcu list to sync between error inject add, remove and check - Add module parameter "allow_restart" to control scsi_device's allow_restart flag V4: - Fix BUG_ON triggered by schedule in atomic context when rmmod scsi_debug Closes: https://lore.kernel.org/oe-lkp/202308031027.5941ce5f-oliver.sang@intel.com V3: - Add two more error types to fail abort command and lun reset - Fix memleak when rmmod scsi_debug without clearing errors injected - Fix memkeak because did not implement release in sdebug_error_fops - Fix possible NULL point access in scsi_debug_slave_destroy - Move specific error type's description to each single patch which implement this error type - Add interface to make target reset fail V2: - Using debugfs rather than sysfs attribute interface to manage error Wenchao Hao (10): scsi: scsi_debug: create scsi_debug directory in the debugfs filesystem scsi: scsi_debug: Add interface to manage single device's error inject scsi: scsi_debug: Define grammar to remove added error injection scsi: scsi_debug: timeout command if the error is injected scsi: scsi_debug: Return failed value if the error is injected scsi: scsi_debug: set command's result and sense data if the error is injected scsi: scsi_debug: Add new error injection abort failed scsi: scsi_debug: Add new error injection reset lun failed scsi: scsi_debug: Add debugfs interface to fail target reset scsi: scsi_debug: Add param to control sdev's allow_restart drivers/scsi/scsi_debug.c | 557 +++++++++++++++++++++++++++++++++++++- 1 file changed, 552 insertions(+), 5 deletions(-)