From cc78d30af0823f33069fb4813c47571d4e0675a2 Mon Sep 17 00:00:00 2001 From: Eric Moore Date: Fri, 15 Jun 2007 17:27:21 -0600 Subject: [SCSI] mpt fusion: fix for mounted raid volume filesytem that goes read-only If there is IO going to the volume while a hidden disk is being torn down, there is a case where we would return a DID_NO_CONNECT for IO sent to the volume. The end result is the volume goes read-only. This problem is due to the fact the firmware mapped target ids saved in per device object is phys_disk_num for hidden raid components, and target_id for the volume. There is a single case when both phys_disk_num and target_id are equal, so enters this issue. We fix this issue by checking the tflags when the device is torned down, insuring the IO being completed is meant for hidden raid component, not the volume. In addition to this fix, there are a couple other cases to address hidden raid components. For instance task_abort and device reset are not supported by mpt fw for hidden raid components, a bus reset would be required or target reset to volume. Signed-off-by: Eric Moore Signed-off-by: James Bottomley --- drivers/message/fusion/mptscsih.c | 53 +++++++++++++++++++++++++++++++++------ 1 file changed, 45 insertions(+), 8 deletions(-) diff --git a/drivers/message/fusion/mptscsih.c b/drivers/message/fusion/mptscsih.c index f0456d26a4af..d35617376f87 100644 --- a/drivers/message/fusion/mptscsih.c +++ b/drivers/message/fusion/mptscsih.c @@ -447,7 +447,12 @@ mptscsih_issue_sep_command(MPT_ADAPTER *ioc, VirtTarget *vtarget, MPT_FRAME_HDR *mf; SEPRequest_t *SEPMsg; - if (ioc->bus_type == FC) + if (ioc->bus_type != SAS) + return; + + /* Not supported for hidden raid components + */ + if (vtarget->tflags & MPT_TARGET_FLAGS_RAID_COMPONENT) return; if ((mf = mpt_get_msg_frame(ioc->InternalCtx, ioc)) == NULL) { @@ -991,14 +996,19 @@ mptscsih_search_running_cmds(MPT_SCSI_HOST *hd, VirtDevice *vdevice) mf = (SCSIIORequest_t *)MPT_INDEX_2_MFPTR(hd->ioc, ii); if (mf == NULL) continue; + /* If the device is a hidden raid component, then its + * expected that the mf->function will be RAID_SCSI_IO + */ + if (vdevice->vtarget->tflags & + MPT_TARGET_FLAGS_RAID_COMPONENT && mf->Function != + MPI_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) + continue; + int_to_scsilun(vdevice->lun, &lun); if ((mf->Bus != vdevice->vtarget->channel) || (mf->TargetID != vdevice->vtarget->id) || memcmp(lun.scsi_lun, mf->LUN, 8)) continue; - dsprintk(( "search_running: found (sc=%p, mf = %p) " - "channel %d id %d, lun %d \n", hd->ScsiLookup[ii], - mf, mf->Bus, mf->TargetID, vdevice->lun)); /* Cleanup */ @@ -1008,9 +1018,11 @@ mptscsih_search_running_cmds(MPT_SCSI_HOST *hd, VirtDevice *vdevice) if ((unsigned char *)mf != sc->host_scribble) continue; scsi_dma_unmap(sc); - sc->host_scribble = NULL; sc->result = DID_NO_CONNECT << 16; + dsprintk(( "search_running: found (sc=%p, mf = %p) " + "channel %d id %d, lun %d \n", sc, mf, + vdevice->vtarget->channel, vdevice->vtarget->id, vdevice->lun)); sc->scsi_done(sc); } } @@ -1756,6 +1768,16 @@ mptscsih_abort(struct scsi_cmnd * SCpnt) goto out; } + /* Task aborts are not supported for hidden raid components. + */ + if (vdevice->vtarget->tflags & MPT_TARGET_FLAGS_RAID_COMPONENT) { + dtmprintk((MYIOC_s_DEBUG_FMT "task abort: hidden raid " + "component (sc=%p)\n", ioc->name, SCpnt)); + SCpnt->result = DID_RESET << 16; + retval = FAILED; + goto out; + } + /* Find this command */ if ((scpnt_idx = SCPNT_TO_LOOKUP_IDX(SCpnt)) < 0) { @@ -1849,6 +1871,13 @@ mptscsih_dev_reset(struct scsi_cmnd * SCpnt) goto out; } + /* Target reset to hidden raid component is not supported + */ + if (vdevice->vtarget->tflags & MPT_TARGET_FLAGS_RAID_COMPONENT) { + retval = FAILED; + goto out; + } + retval = mptscsih_TMHandler(hd, MPI_SCSITASKMGMT_TASKTYPE_TARGET_RESET, vdevice->vtarget->channel, vdevice->vtarget->id, 0, 0, mptscsih_get_tm_timeout(ioc)); @@ -3131,6 +3160,16 @@ mptscsih_synchronize_cache(MPT_SCSI_HOST *hd, VirtDevice *vdevice) { INTERNAL_CMD iocmd; + /* Ignore hidden raid components, this is handled when the command + * is sent to the volume + */ + if (vdevice->vtarget->tflags & MPT_TARGET_FLAGS_RAID_COMPONENT) + return; + + if (vdevice->vtarget->type != TYPE_DISK || vdevice->vtarget->deleted || + !vdevice->configured_lun) + return; + /* Following parameters will not change * in this routine. */ @@ -3145,9 +3184,7 @@ mptscsih_synchronize_cache(MPT_SCSI_HOST *hd, VirtDevice *vdevice) iocmd.id = vdevice->vtarget->id; iocmd.lun = vdevice->lun; - if ((vdevice->vtarget->type == TYPE_DISK) && - (vdevice->configured_lun)) - mptscsih_do_cmd(hd, &iocmd); + mptscsih_do_cmd(hd, &iocmd); } EXPORT_SYMBOL(mptscsih_remove); -- cgit v1.2.2