On Mon, 2009-06-29 at 15:08 +0200, Tomasz Torcz wrote: > Hello, > > recently I've acquired Infortrend EonStor A16U-G2421 array > with 16x 500GB SATA drives inside. It is connected via: > 04:00.0 SCSI storage controller: Adaptec AHA-2940U2/U2W > to host running Fedora 12 with following kernel: > 2.6.31-0.33.rc1.git2.fc12.x86_64 > > When I export LUN >2TB from array I got following errors: > > scsi 5:0:0:1: Direct-Access VW VRU1610 347G PQ: 0 ANSI: 5 > scsi target5:0:0: FAST-40 WIDE SCSI 80.0 MB/s ST (25 ns, offset 127) > scsi5:A:0:1: Tagged Queuing enabled. Depth 4 > sd 5:0:0:1: Attached scsi generic sg3 type 0 > sd 5:0:0:1: [sdd] READ CAPACITY(16) failed > sd 5:0:0:1: [sdd] Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK > sd 5:0:0:1: [sdd] Sense not available. > sd 5:0:0:1: [sdd] 4294967296 512-byte logical blocks: (2.19 TB/2.00 TiB) > sd 5:0:0:1: [sdd] Write Protect is off > sd 5:0:0:1: [sdd] Mode Sense: 9b 00 00 08 > sd 5:0:0:1: [sdd] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA > sd 5:0:0:1: [sdd] READ CAPACITY(16) failed > sd 5:0:0:1: [sdd] Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK > sd 5:0:0:1: [sdd] Sense not available. > sdd: unknown partition table > sd 5:0:0:1: [sdd] READ CAPACITY(16) failed > sd 5:0:0:1: [sdd] Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK > sd 5:0:0:1: [sdd] Sense not available. > sd 5:0:0:1: [sdd] Attached SCSI disk > > According to manufacturer, this array supports LUNs up to 64TB, > although >2TB LUNs require enigmatic ,,support from OS side''. > I was under impression that aic7xxx supports them, but it seems > not true. What can I tweak on the Linux side to use 6TB volumes? Both aic7xxx and aic79xx should support up to 32 byte CDBs, but no-one's actually bothered to inform the kernel of this. The attached patch will do this. There's a problem for you in that you have an aic7xxx and they use a different SCB for >12 byte cdbs, so they have a separate code path, which has obviously never been tested ... so don't try this with data you care about. James ---- diff --git a/drivers/scsi/aic7xxx/aic79xx_osm.c b/drivers/scsi/aic7xxx/aic79xx_osm.c index 75b2331..e36d053 100644 --- a/drivers/scsi/aic7xxx/aic79xx_osm.c +++ b/drivers/scsi/aic7xxx/aic79xx_osm.c @@ -1241,6 +1241,7 @@ ahd_linux_register_host(struct ahd_softc *ahd, struct scsi_host_template *templa host->max_lun = AHD_NUM_LUNS; host->max_channel = 0; host->sg_tablesize = AHD_NSEG; + host->max_cmd_len = 32; ahd_lock(ahd, &s); ahd_set_unit(ahd, ahd_linux_unit++); ahd_unlock(ahd, &s); diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.c b/drivers/scsi/aic7xxx/aic7xxx_osm.c index fd2b978..2d069de 100644 --- a/drivers/scsi/aic7xxx/aic7xxx_osm.c +++ b/drivers/scsi/aic7xxx/aic7xxx_osm.c @@ -1115,6 +1115,7 @@ ahc_linux_register_host(struct ahc_softc *ahc, struct scsi_host_template *templa host->max_lun = AHC_NUM_LUNS; host->max_channel = (ahc->features & AHC_TWIN) ? 1 : 0; host->sg_tablesize = AHC_NSEG; + host->max_cmd_len = 32; ahc_lock(ahc, &s); ahc_set_unit(ahc, ahc_linux_unit++); ahc_unlock(ahc, &s); -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
