Hi, This patch adds retry for the IO returned with 06/3f/03((INQUIRY_DATA_CHANGED)) sense code in rdac_check_sense(). IO returned with 06/3f/03 from controller are currently failed by scsi mid layer, as a reason momentarily path failure is noticed by DM multipath. Signed-off-by: Vijay Chauhan<vijay.chauhan@xxxxxxx> Reviewed-by: Babu Moger <babu.moger@xxxxxxx> Reviewed-by: Bob Stankey <Robert.stankey@xxxxxxx> --- diff -uprN linux-2.6.35-rc6-orig/drivers/scsi/device_handler/scsi_dh_rdac.c linux-2.6.35-rc6/drivers/scsi/device_handler/scsi_dh_rdac.c --- linux-2.6.35-rc6-orig/drivers/scsi/device_handler/scsi_dh_rdac.c 2010-07-22 15:13:38.000000000 -0400 +++ linux-2.6.35-rc6/drivers/scsi/device_handler/scsi_dh_rdac.c 2010-07-27 12:13:58.000000000 -0400 @@ -738,6 +738,11 @@ static int rdac_check_sense(struct scsi_ * Quiescence in progress , just retry. */ return ADD_TO_MLQUEUE; + if (sense_hdr->asc == 0x3f && sense_hdr->ascq == 0x03) + /* + * INQUIRY DATA has changed, retry again. + */ + return ADD_TO_MLQUEUE; break; } /* success just means we do not care what scsi-ml does */ -- -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
