On Thu, 2018-03-01 at 16:18 +0000, Don Brace wrote: > > -----Original Message----- > > From: Ming Lei [mailto:ming.lei@xxxxxxxxxx] > > Sent: Tuesday, February 27, 2018 4:08 AM > > To: Jens Axboe <axboe@xxxxxxxxx>; linux-block@xxxxxxxxxxxxxxx; > > Christoph > > Hellwig <hch@xxxxxxxxxxxxx>; Mike Snitzer <snitzer@xxxxxxxxxx> > > Cc: linux-scsi@xxxxxxxxxxxxxxx; Hannes Reinecke <hare@xxxxxxx>; > > Arun Easi > > <arun.easi@xxxxxxxxxx>; Omar Sandoval <osandov@xxxxxx>; Martin K . > > Petersen <martin.petersen@xxxxxxxxxx>; James Bottomley > > <james.bottomley@xxxxxxxxxxxxxxxxxxxxx>; Christoph Hellwig <hch@lst > > .de>; > > Don Brace <don.brace@xxxxxxxxxxxxx>; Kashyap Desai > > <kashyap.desai@xxxxxxxxxxxx>; Peter Rivera <peter.rivera@broadcom.c > > om>; > > Laurence Oberman <loberman@xxxxxxxxxx>; Ming Lei > > <ming.lei@xxxxxxxxxx>; Meelis Roos <mroos@xxxxxxxx> > > Subject: [PATCH V3 1/8] scsi: hpsa: fix selection of reply queue > > > > EXTERNAL EMAIL > > > > > > From 84676c1f21 (genirq/affinity: assign vectors to all possible > > CPUs), > > one msix vector can be created without any online CPU mapped, then > > one > > command's completion may not be notified. > > > > This patch setups mapping between cpu and reply queue according to > > irq > > affinity info retrived by pci_irq_get_affinity(), and uses this > > mapping > > table to choose reply queue for queuing one command. > > > > Then the chosen reply queue has to be active, and fixes IO hang > > caused > > by using inactive reply queue which doesn't have any online CPU > > mapped. > > > > Cc: Hannes Reinecke <hare@xxxxxxx> > > Cc: Arun Easi <arun.easi@xxxxxxxxxx> > > Cc: "Martin K. Petersen" <martin.petersen@xxxxxxxxxx>, > > Cc: James Bottomley <james.bottomley@xxxxxxxxxxxxxxxxxxxxx>, > > Cc: Christoph Hellwig <hch@xxxxxx>, > > Cc: Don Brace <don.brace@xxxxxxxxxxxxx> > > Cc: Kashyap Desai <kashyap.desai@xxxxxxxxxxxx> > > Cc: Peter Rivera <peter.rivera@xxxxxxxxxxxx> > > Cc: Laurence Oberman <loberman@xxxxxxxxxx> > > Cc: Meelis Roos <mroos@xxxxxxxx> > > Fixes: 84676c1f21e8 ("genirq/affinity: assign vectors to all > > possible CPUs") > > Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxx> > > I am getting some issues that need to be tracked down: > > [ 1636.032984] hpsa 0000:87:00.0: Acknowledging event: 0xc0000032 (HP > SSD Smart Path configuration change) > [ 1638.510656] hpsa 0000:87:00.0: scsi 3:0:8:0: updated Direct- > Access HP MO0400JDVEU PHYS DRV SSDSmartPathCap- En- > Exp=0 > [ 1653.967695] hpsa 0000:87:00.0: Acknowledging event: 0x80000020 (HP > SSD Smart Path configuration change) > [ 1656.770377] hpsa 0000:87:00.0: scsi 3:0:8:0: updated Direct- > Access HP MO0400JDVEU PHYS DRV SSDSmartPathCap- En- > Exp=0 > [ 2839.762267] hpsa 0000:87:00.0: Acknowledging event: 0x80000020 (HP > SSD Smart Path configuration change) > [ 2840.841290] hpsa 0000:87:00.0: scsi 3:0:8:0: updated Direct- > Access HP MO0400JDVEU PHYS DRV SSDSmartPathCap- En- > Exp=0 > [ 2917.582653] hpsa 0000:87:00.0: Acknowledging event: 0xc0000020 (HP > SSD Smart Path configuration change) > [ 2919.087191] hpsa 0000:87:00.0: scsi 3:1:0:1: updated Direct- > Access HP LOGICAL VOLUME RAID-5 SSDSmartPathCap+ En+ > Exp=1 > [ 2919.142527] hpsa 0000:87:00.0: hpsa_figure_phys_disk_ptrs: > [3:1:0:2] A phys disk component of LV is missing, turning off > offload_enabled for LV. > [ 2919.203915] hpsa 0000:87:00.0: hpsa_figure_phys_disk_ptrs: > [3:1:0:2] A phys disk component of LV is missing, turning off > offload_enabled for LV. > [ 2919.266921] hpsa 0000:87:00.0: hpsa_figure_phys_disk_ptrs: > [3:1:0:2] A phys disk component of LV is missing, turning off > offload_enabled for LV. > [ 2934.999629] hpsa 0000:87:00.0: Acknowledging event: 0x40000000 (HP > SSD Smart Path state change) > [ 2936.937333] hpsa 0000:87:00.0: hpsa_figure_phys_disk_ptrs: > [3:1:0:2] A phys disk component of LV is missing, turning off > offload_enabled for LV. > [ 2936.998707] hpsa 0000:87:00.0: hpsa_figure_phys_disk_ptrs: > [3:1:0:2] A phys disk component of LV is missing, turning off > offload_enabled for LV. > [ 2937.060101] hpsa 0000:87:00.0: hpsa_figure_phys_disk_ptrs: > [3:1:0:2] A phys disk component of LV is missing, turning off > offload_enabled for LV. > [ 3619.711122] sd 3:1:0:3: [sde] tag#436 FAILED Result: > hostbyte=DID_OK driverbyte=DRIVER_SENSE > [ 3619.751150] sd 3:1:0:3: [sde] tag#436 Sense Key : Aborted Command > [current] > [ 3619.784375] sd 3:1:0:3: [sde] tag#436 Add. Sense: Internal target > failure > [ 3619.816530] sd 3:1:0:3: [sde] tag#436 CDB: Read(10) 28 00 01 1b ad > af 00 00 01 00 > [ 3619.852295] print_req_error: I/O error, dev sde, sector 18591151 > [ 3619.880850] sd 3:1:0:3: [sde] tag#461 FAILED Result: > hostbyte=DID_OK driverbyte=DRIVER_SENSE > [ 3619.920981] sd 3:1:0:3: [sde] tag#461 Sense Key : Aborted Command > [current] > [ 3619.955081] sd 3:1:0:3: [sde] tag#461 Add. Sense: Internal target > failure > [ 3619.987054] sd 3:1:0:3: [sde] tag#461 CDB: Read(10) 28 00 02 15 31 > 40 00 00 01 00 > [ 3620.022569] print_req_error: I/O error, dev sde, sector 34943296 > [ 3620.050873] sd 3:1:0:3: [sde] tag#157 FAILED Result: > hostbyte=DID_OK driverbyte=DRIVER_SENSE > [ 3620.091124] sd 3:1:0:3: [sde] tag#157 Sense Key : Aborted Command > [current] > [ 3620.124179] sd 3:1:0:3: [sde] tag#157 Add. Sense: Internal target > failure > [ 3620.156203] sd 3:1:0:3: [sde] tag#157 CDB: Read(10) 28 00 03 65 9d > 7e 00 00 01 00 > [ 3620.191520] print_req_error: I/O error, dev sde, sector 56991102 > [ 3620.220308] sd 3:1:0:3: [sde] tag#266 FAILED Result: > hostbyte=DID_OK driverbyte=DRIVER_SENSE > [ 3620.260273] sd 3:1:0:3: [sde] tag#266 Sense Key : Aborted Command > [current] > [ 3620.294605] sd 3:1:0:3: [sde] tag#266 Add. Sense: Internal target > failure > [ 3620.328353] sd 3:1:0:3: [sde] tag#266 CDB: Read(10) 28 00 09 92 94 > 70 00 00 01 00 > [ 3620.364807] print_req_error: I/O error, dev sde, sector 160601200 > [ 3620.394342] sd 3:1:0:3: [sde] tag#278 FAILED Result: > hostbyte=DID_OK driverbyte=DRIVER_SENSE > [ 3620.434462] sd 3:1:0:3: [sde] tag#278 Sense Key : Aborted Command > [current] > [ 3620.469059] sd 3:1:0:3: [sde] tag#278 Add. Sense: Internal target > failure > [ 3620.471761] sd 3:1:0:3: [sde] tag#467 FAILED Result: > hostbyte=DID_OK driverbyte=DRIVER_SENSE > [ 3620.502240] sd 3:1:0:3: [sde] tag#278 CDB: Read(10) 28 00 08 00 12 > ea 00 00 01 00 > [ 3620.543157] sd 3:1:0:3: [sde] tag#467 Sense Key : Aborted Command > [current] > [ 3620.580375] print_req_error: I/O error, dev sde, sector 134222570 > [ 3620.615355] sd 3:1:0:3: [sde] tag#467 Add. Sense: Internal target > failure > [ 3620.645069] sd 3:1:0:3: [sde] tag#244 FAILED Result: > hostbyte=DID_OK driverbyte=DRIVER_SENSE > [ 3620.678696] sd 3:1:0:3: [sde] tag#467 CDB: Read(10) 28 00 10 3f 2b > fc 00 00 01 00 > [ 3620.720247] sd 3:1:0:3: [sde] tag#244 Sense Key : Aborted Command > [current] > [ 3620.756776] print_req_error: I/O error, dev sde, sector 272575484 > [ 3620.791857] sd 3:1:0:3: [sde] tag#244 Add. Sense: Internal target > failure > [ 3620.822272] sd 3:1:0:3: [sde] tag#431 FAILED Result: > hostbyte=DID_OK driverbyte=DRIVER_SENSE > [ 3620.855200] sd 3:1:0:3: [sde] tag#244 CDB: Read(10) 28 00 08 31 86 > d9 00 00 01 00 > [ 3620.895823] sd 3:1:0:3: [sde] tag#431 Sense Key : Aborted Command > [current] > [ 3620.931923] print_req_error: I/O error, dev sde, sector 137463513 > [ 3620.966262] sd 3:1:0:3: [sde] tag#431 Add. Sense: Internal target > failure > [ 3620.995715] sd 3:1:0:3: [sde] tag#226 FAILED Result: > hostbyte=DID_OK driverbyte=DRIVER_SENSE > [ 3621.028703] sd 3:1:0:3: [sde] tag#431 CDB: Read(10) 28 00 10 7c b2 > b0 00 00 01 00 > [ 3621.069686] sd 3:1:0:3: [sde] tag#226 Sense Key : Aborted Command > [current] > [ 3621.106253] print_req_error: I/O error, dev sde, sector 276607664 > [ 3621.140782] sd 3:1:0:3: [sde] tag#226 Add. Sense: Internal target > failure > [ 3621.170241] sd 3:1:0:3: [sde] tag#408 FAILED Result: > hostbyte=DID_OK driverbyte=DRIVER_SENSE > [ 3621.202997] sd 3:1:0:3: [sde] tag#226 CDB: Read(10) 28 00 08 ba cf > f2 00 00 01 00 > [ 3621.243870] sd 3:1:0:3: [sde] tag#408 Sense Key : Aborted Command > [current] > [ 3621.280015] print_req_error: I/O error, dev sde, sector 146460658 > [ 3621.313941] sd 3:1:0:3: [sde] tag#408 Add. Sense: Internal target > failure > [ 3621.343790] print_req_error: I/O error, dev sde, sector 98830586 > [ 3621.376164] sd 3:1:0:3: [sde] tag#408 CDB: Read(10) 28 00 14 da 6a > 53 00 00 01 00 > [ 3641.714842] WARNING: CPU: 3 PID: 0 at kernel/rcu/tree.c:2713 > rcu_process_callbacks+0x4d5/0x510 > [ 3641.756175] Modules linked in: sg ip6t_rpfilter ip6t_REJECT > nf_reject_ipv6 nf_conntrack_ipv6 nf_defrag_ipv6 ipt_REJECT > nf_reject_ipv4 nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack > nf_conntrack cfg80211 rfkill ebtable_nat ebtable_broute bridge stp > llc ebtable_filter ebtables ip6table_mangle ip6table_security > ip6table_raw ip6table_filter ip6_tables iptable_mangle > iptable_security iptable_raw iptable_filter ip_tables sb_edac > x86_pkg_temp_thermal coretemp kvm_intel kvm irqbypass > crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc iTCO_wdt > iTCO_vendor_support aesni_intel crypto_simd glue_helper cryptd pcspkr > hpilo hpwdt ioatdma shpchp ipmi_si lpc_ich dca mfd_core wmi > ipmi_msghandler acpi_power_meter pcc_cpufreq uinput xfs libcrc32c > mgag200 i2c_algo_bit drm_kms_helper sd_mod syscopyarea sysfillrect > [ 3642.094993] sysimgblt fb_sys_fops ttm drm crc32c_intel i2c_core > tg3 hpsa scsi_transport_sas usb_storage dm_mirror dm_region_hash > dm_log dm_mod dax > [ 3642.158883] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 4.16.0-rc3+ > #18 > [ 3642.190015] Hardware name: HP ProLiant DL580 Gen8, BIOS P79 > 08/18/2016 > [ 3642.221949] RIP: 0010:rcu_process_callbacks+0x4d5/0x510 > [ 3642.247606] RSP: 0018:ffff8e179f6c3f08 EFLAGS: 00010002 > [ 3642.273087] RAX: 0000000000000000 RBX: ffff8e179f6e3180 RCX: > ffff8e279d1e8918 > [ 3642.307426] RDX: ffffffffffffd801 RSI: ffff8e179f6c3f18 RDI: > ffff8e179f6e31b8 > [ 3642.342219] RBP: ffffffffb70a31c0 R08: ffff8e279d1e8918 R09: > 0000000000000100 > [ 3642.376929] R10: 0000000000000004 R11: 0000000000000005 R12: > ffff8e179f6e31b8 > [ 3642.411598] R13: ffff8e179d20ad00 R14: 0000000000000001 R15: > 7fffffffffffffff > [ 3642.445957] FS: 0000000000000000(0000) GS:ffff8e179f6c0000(0000) > knlGS:0000000000000000 > [ 3642.485599] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 3642.513678] CR2: 00007f30917b9008 CR3: 000000054900a006 CR4: > 00000000001606e0 > [ 3642.548189] Call Trace: > [ 3642.560411] <IRQ> > [ 3642.570588] __do_softirq+0xd1/0x275 > [ 3642.588643] irq_exit+0xd5/0xe0 > [ 3642.604134] smp_apic_timer_interrupt+0x60/0x120 > [ 3642.626752] apic_timer_interrupt+0xf/0x20 > [ 3642.646712] </IRQ> > [ 3642.657330] RIP: 0010:cpuidle_enter_state+0xd4/0x260 > [ 3642.681389] RSP: 0018:ffffaed7c00e7ea0 EFLAGS: 00000246 ORIG_RAX: > ffffffffffffff12 > [ 3642.717937] RAX: ffff8e179f6e2280 RBX: ffffcebfbfec1bb8 RCX: > 000000000000001f > [ 3642.752525] RDX: 0000000000000000 RSI: ff6c3b1b90a53a78 RDI: > 0000000000000000 > [ 3642.787181] RBP: 0000000000000003 R08: 0000000000000005 R09: > 0000000000000396 > [ 3642.821442] R10: 00000000000003a7 R11: 0000000000000008 R12: > 0000000000000003 > [ 3642.856381] R13: 0000034fe70ea52c R14: 0000000000000003 R15: > 0000034fe71d99d4 > [ 3642.890830] do_idle+0x172/0x1e0 > [ 3642.906714] cpu_startup_entry+0x6f/0x80 > [ 3642.925835] start_secondary+0x187/0x1e0 > [ 3642.944975] secondary_startup_64+0xa5/0xb0 > [ 3642.965719] Code: e9 db fd ff ff 4c 89 f6 4c 89 e7 e8 96 b8 63 00 > e9 56 fc ff ff 0f 0b e9 34 fc ff ff 0f 0b 0f 1f 84 00 00 00 00 00 e9 > e0 fb ff ff <0f> 0b 66 0f 1f 84 00 00 00 00 00 e9 e5 fd ff ff 0f 0b > 66 0f 1f > [ 3643.056198] ---[ end trace 7bdac969b3138de7 ]--- > [ 3735.745955] hpsa 0000:87:00.0: SCSI status: LUN:000000c000002601 > CDB:12010000040000000000000000000000 > [ 3735.790497] hpsa 0000:87:00.0: SCSI Status = 02, Sense key = 0x05, > ASC = 0x25, ASCQ = 0x00 > > --- > > drivers/scsi/hpsa.c | 73 +++++++++++++++++++++++++++++++++++++++ > > -------------- > > drivers/scsi/hpsa.h | 1 + > > 2 files changed, 55 insertions(+), 19 deletions(-) > > > > diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c > > index 5293e6827ce5..3a9eca163db8 100644 > > --- a/drivers/scsi/hpsa.c > > +++ b/drivers/scsi/hpsa.c > > @@ -1045,11 +1045,7 @@ static void set_performant_mode(struct > > ctlr_info > > *h, struct CommandList *c, > > c->busaddr |= 1 | (h->blockFetchTable[c- > > >Header.SGList] << 1); > > if (unlikely(!h->msix_vectors)) > > return; > > - if (likely(reply_queue == DEFAULT_REPLY_QUEUE)) > > - c->Header.ReplyQueue = > > - raw_smp_processor_id() % h- > > >nreply_queues; > > - else > > - c->Header.ReplyQueue = reply_queue % h- > > >nreply_queues; > > + c->Header.ReplyQueue = reply_queue; > > } > > } > > > > @@ -1063,10 +1059,7 @@ static void > > set_ioaccel1_performant_mode(struct > > ctlr_info *h, > > * Tell the controller to post the reply to the queue for > > this > > * processor. This seems to give the best I/O throughput. > > */ > > - if (likely(reply_queue == DEFAULT_REPLY_QUEUE)) > > - cp->ReplyQueue = smp_processor_id() % h- > > >nreply_queues; > > - else > > - cp->ReplyQueue = reply_queue % h->nreply_queues; > > + cp->ReplyQueue = reply_queue; > > /* > > * Set the bits in the address sent down to include: > > * - performant mode bit (bit 0) > > @@ -1087,10 +1080,7 @@ static void > > set_ioaccel2_tmf_performant_mode(struct ctlr_info *h, > > /* Tell the controller to post the reply to the queue for > > this > > * processor. This seems to give the best I/O throughput. > > */ > > - if (likely(reply_queue == DEFAULT_REPLY_QUEUE)) > > - cp->reply_queue = smp_processor_id() % h- > > >nreply_queues; > > - else > > - cp->reply_queue = reply_queue % h->nreply_queues; > > + cp->reply_queue = reply_queue; > > /* Set the bits in the address sent down to include: > > * - performant mode bit not used in ioaccel mode 2 > > * - pull count (bits 0-3) > > @@ -1109,10 +1099,7 @@ static void > > set_ioaccel2_performant_mode(struct > > ctlr_info *h, > > * Tell the controller to post the reply to the queue for > > this > > * processor. This seems to give the best I/O throughput. > > */ > > - if (likely(reply_queue == DEFAULT_REPLY_QUEUE)) > > - cp->reply_queue = smp_processor_id() % h- > > >nreply_queues; > > - else > > - cp->reply_queue = reply_queue % h->nreply_queues; > > + cp->reply_queue = reply_queue; > > /* > > * Set the bits in the address sent down to include: > > * - performant mode bit not used in ioaccel mode 2 > > @@ -1157,6 +1144,8 @@ static void __enqueue_cmd_and_start_io(struct > > ctlr_info *h, > > { > > dial_down_lockup_detection_during_fw_flash(h, c); > > atomic_inc(&h->commands_outstanding); > > + > > + reply_queue = h->reply_map[raw_smp_processor_id()]; > > switch (c->cmd_type) { > > case CMD_IOACCEL1: > > set_ioaccel1_performant_mode(h, c, reply_queue); > > @@ -7376,6 +7365,26 @@ static void > > hpsa_disable_interrupt_mode(struct > > ctlr_info *h) > > h->msix_vectors = 0; > > } > > > > +static void hpsa_setup_reply_map(struct ctlr_info *h) > > +{ > > + const struct cpumask *mask; > > + unsigned int queue, cpu; > > + > > + for (queue = 0; queue < h->msix_vectors; queue++) { > > + mask = pci_irq_get_affinity(h->pdev, queue); > > + if (!mask) > > + goto fallback; > > + > > + for_each_cpu(cpu, mask) > > + h->reply_map[cpu] = queue; > > + } > > + return; > > + > > +fallback: > > + for_each_possible_cpu(cpu) > > + h->reply_map[cpu] = 0; > > +} > > + > > /* If MSI/MSI-X is supported by the kernel we will try to enable > > it on > > * controllers that are capable. If not, we use legacy INTx mode. > > */ > > @@ -7771,6 +7780,10 @@ static int hpsa_pci_init(struct ctlr_info > > *h) > > err = hpsa_interrupt_mode(h); > > if (err) > > goto clean1; > > + > > + /* setup mapping between CPU and reply queue */ > > + hpsa_setup_reply_map(h); > > + > > err = hpsa_pci_find_memory_BAR(h->pdev, &h->paddr); > > if (err) > > goto clean2; /* intmode+region, pci */ > > @@ -8480,6 +8493,28 @@ static struct workqueue_struct > > *hpsa_create_controller_wq(struct ctlr_info *h, > > return wq; > > } > > > > +static void hpda_free_ctlr_info(struct ctlr_info *h) > > +{ > > + kfree(h->reply_map); > > + kfree(h); > > +} > > + > > +static struct ctlr_info *hpda_alloc_ctlr_info(void) > > +{ > > + struct ctlr_info *h; > > + > > + h = kzalloc(sizeof(*h), GFP_KERNEL); > > + if (!h) > > + return NULL; > > + > > + h->reply_map = kzalloc(sizeof(*h->reply_map) * nr_cpu_ids, > > GFP_KERNEL); > > + if (!h->reply_map) { > > + kfree(h); > > + return NULL; > > + } > > + return h; > > +} > > + > > static int hpsa_init_one(struct pci_dev *pdev, const struct > > pci_device_id *ent) > > { > > int dac, rc; > > @@ -8517,7 +8552,7 @@ static int hpsa_init_one(struct pci_dev > > *pdev, const > > struct pci_device_id *ent) > > * the driver. See comments in hpsa.h for more info. > > */ > > BUILD_BUG_ON(sizeof(struct CommandList) % > > COMMANDLIST_ALIGNMENT); > > - h = kzalloc(sizeof(*h), GFP_KERNEL); > > + h = hpda_alloc_ctlr_info(); > > if (!h) { > > dev_err(&pdev->dev, "Failed to allocate controller > > head\n"); > > return -ENOMEM; > > @@ -8916,7 +8951,7 @@ static void hpsa_remove_one(struct pci_dev > > *pdev) > > h->lockup_detected = NULL; /* init_one > > 2 */ > > /* (void) pci_disable_pcie_error_reporting(pdev); */ /* > > init_one 1 */ > > > > - kfree(h); /* init_one > > 1 */ > > + hpda_free_ctlr_info(h); /* init_one > > 1 */ > > } > > > > static int hpsa_suspend(__attribute__((unused)) struct pci_dev > > *pdev, > > diff --git a/drivers/scsi/hpsa.h b/drivers/scsi/hpsa.h > > index 018f980a701c..fb9f5e7f8209 100644 > > --- a/drivers/scsi/hpsa.h > > +++ b/drivers/scsi/hpsa.h > > @@ -158,6 +158,7 @@ struct bmic_controller_parameters { > > #pragma pack() > > > > struct ctlr_info { > > + unsigned int *reply_map; > > int ctlr; > > char devname[8]; > > char *product_name; > > -- > > 2.9.5 > > I have a DL580 here with the following: Ming's latest tree 4.16.0-rc2.ming+ 3:00.0 RAID bus controller: Hewlett-Packard Company Smart Array G6 controllers (rev 01) P410i /dev/sg0 1 0 0 0 12 HP P410i 6.60 /dev/sg1 1 1 0 0 0 /dev/sda HP LOGICAL VOLUME 6.60 Boot volume /dev/sg2 1 1 0 1 0 /dev/sdb HP LOGICAL VOLUME 6.60 Single disk /dev/sg3 1 1 0 2 0 /dev/sdc HP LOGICAL VOLUME 6.60 2 Disk Mirror MSA50 Shelf at 6GB, all Jbods 0e:00.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID SAS 2208 [Thunderbolt] (rev 03) /dev/sg4 0 0 43 0 0 /dev/sdd HP DG072A9BB7 HPD0 /dev/sg5 0 0 44 0 0 /dev/sde HP DG146BABCF HPD5 /dev/sg6 0 0 45 0 0 /dev/sdf HP DG146BABCF HPD6 /dev/sg7 0 0 46 0 0 /dev/sdg HP EG0146FAWHU HPDE /dev/sg8 0 0 47 0 0 /dev/sdh HP EG0146FAWHU HPDD /dev/sg9 0 0 48 0 0 /dev/sdi HP EG0146FAWHU HPDE /dev/sg10 0 0 49 0 0 /dev/sdj ATA OCZ-VERTEX4 1.5 /dev/sg11 0 0 50 0 0 /dev/sdk ATA OCZ-VERTEX4 1.5 /dev/sg12 0 0 51 0 0 /dev/sdl ATA INTEL SSDSC2BW08 DC32 /dev/sg13 0 0 52 0 13 HP MSA50 -10D25G1 1.20 I have multiple boot passes on the HPSA all passing, and have not had any access issues with Ming's patches to the megaraid_sas drives I dont have the decent SSD hardware to test performance on the megaraid_sas to match Kashyap unfortunately. What I can say is that so far all boot testing has passed. I will exercise all the drives now to see if I can bring about any issues seen by Don Thanks Laurence
