<html> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8"> </head> <body bgcolor="#FFFFFF" text="#000000"> I'm following this page: <a class="moz-txt-link-freetext" href="http://wiki.illumos.org/display/illumos/ZFS+and+Advanced+Format+disks">http://wiki.illumos.org/display/illumos/ZFS+and+Advanced+Format+disks</a> but I just can't get my HGST 4K disks to get the 4TB capacity in the zpool. I've cross referenced and verified multiple times and this should work for sd_config_list= "ATA HGST HDS724040AL", "physical-block-size:4096", Here's some sample output to confirm: # iostat -Er | grep -i vendor | sort | uniq | grep HGST | head -3 Vendor: ATA ,Product: HGST HDS724040AL ,Revision: A580 ,Serial No: PK1331P1GMPSSY Vendor: ATA ,Product: HGST HDS724040AL ,Revision: A580 ,Serial No: PK1331PAGKW5RV Vendor: ATA ,Product: HGST HDS724040AL ,Revision: A580 ,Serial No: PK1331PAGP029V The number of spaces is definitely correct. # echo ::sd_state | mdb -k | egrep '(^un|_blocksize)' un 0: ffffff134e4a7300 un_sys_blocksize = 0x200 un_tgt_blocksize = 0x200 un_phy_blocksize = 0x200 un_f_tgt_blocksize_is_valid = 0x1 un 1: ffffff137abaf340 un_sys_blocksize = 0x200 un_tgt_blocksize = 0x200 un_phy_blocksize = 0x200 un_f_tgt_blocksize_is_valid = 0x1 un 2: ffffff137b2990c0 un_sys_blocksize = 0x200 un_tgt_blocksize = 0x200 un_phy_blocksize = 0x200 un_f_tgt_blocksize_is_valid = 0x1 un 3: ffffff138d713900 un_sys_blocksize = 0x200 un_tgt_blocksize = 0x200 un_phy_blocksize = 0x200 un_f_tgt_blocksize_is_valid = 0x1 should be 0x1000, right? sample format output: 3. c0t3d0 <ATA-HGST HDS724040AL-A580-2.00TB> /pci@0,0/pci8086,340c@5/pci1000,3150@0/sd@3,0 4. c0t4d0 <ATA-HGST HDS724040AL-A580-2.00TB> /pci@0,0/pci8086,340c@5/pci1000,3150@0/sd@4,0 5. c0t5d0 <ATA-HGST HDS724040AL-A580-2.00TB> format> inq Vendor: ATA Product: HGST HDS724040AL Revision: A580 update_drv -vf sd doesn't seem to help, neither does reboot. zpool create doesn't have the argument to specify ashift, either. Any advice? </body> </html>