Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 30 Apr 2001 11:13:16 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 30 Apr 2001 11:13:06 -0400 Received: from 212-71.dialup.cloud9.net ([168.100.212.71]:15108 "EHLO owl.zoo") by vger.kernel.org with ESMTP id ; Mon, 30 Apr 2001 11:12:55 -0400 Date: Mon, 30 Apr 2001 11:12:34 -0400 To: Andries.Brouwer@cwi.nl, linux-kernel@vger.kernel.org Subject: Re: Seagate ST340824A and (un)clipping max LBA: 2.2.19+ide04092001 patch Message-ID: <20010430111232.A8825@eagle.zoo> In-Reply-To: Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="CUfgB8w4ZwR/yMy5" Content-Disposition: inline User-Agent: Mutt/1.3.17i In-Reply-To: ; from Andries.Brouwer@cwi.nl on Sat, Apr 28, 2001 at 12:22:07AM +0200 From: Alexander Stavitsky Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --CUfgB8w4ZwR/yMy5 Content-Type: multipart/mixed; boundary="tThc/1wpZn/ma/RB" Content-Disposition: inline --tThc/1wpZn/ma/RB Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Apr 28, 2001 at 12:22:07AM +0200, Andries.Brouwer@cwi.nl wrote: > No. Maybe someone can tell us about its origin, but in your case > of course this just works because 0xa intersects 0x306b. You might > comment out this entire test. If I comment out the entire test, it would try to unclip the capacity of all drives. Is it safe? For my situation I would prefer to use "setmax" or disk specific "seagate" (see later), but I do not know how to change the kernel idea of drive geometry and capacity. I use 2.2.19 + ide patch. Neither fdisk nor dd would not read past the clipped capacity before or aft= er software unclipping. >=20 > In the case of this particular disk the manufacturer says: > Use the Set Features command (EF) with subfunction F1. > That tells the disk to report full capacity. > (ATA-6 says that F1 is reserved for use by the Compact Flash Association) >=20 > [Could you try that and report identify output before and after?] Yes, I tried that and it does report unclipped capacity. seagate.c is attached for reference. stalex@eagle:~$ sudo hdparm -I /dev/hdb /dev/hdb: Model=3DTS438042 A , FwRev=3D.350 , Serial= No=3DH30E0186 =20 Config=3D{ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% } RawCHS=3D16383/16/63, TrkSize=3D0, SectSize=3D0, ECCbytes=3D0 BuffType=3Dunknown, BuffSize=3D2048kB, MaxMultSect=3D16, MultSect=3D?16? CurCHS=3D16383/16/63, CurSects=3D16514064, LBA=3Dyes, LBAsects=3D66055248 IORDY=3Don/off, tPIO=3D{min:240,w/IORDY:120}, tDMA=3D{min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4=20 DMA modes: mdma0 mdma1 mdma2 udma0 udma1 *udma2 udma3 udma4 udma5=20 stalex@eagle:~$ sudo /usr/src/seagate /dev/hdb Using device /dev/hdb Sending Set Features F1 subcommand Done. stalex@eagle:~$ sudo hdparm -I /dev/hdb /dev/hdb: Model=3DTS438042 A , FwRev=3D.350 , Serial= No=3DH30E0186 =20 Config=3D{ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% } RawCHS=3D16383/16/63, TrkSize=3D0, SectSize=3D0, ECCbytes=3D0 BuffType=3Dunknown, BuffSize=3D2048kB, MaxMultSect=3D16, MultSect=3D?16? CurCHS=3D16383/16/63, CurSects=3D16514064, LBA=3Dyes, LBAsects=3D78165360 IORDY=3Don/off, tPIO=3D{min:240,w/IORDY:120}, tDMA=3D{min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4=20 DMA modes: mdma0 mdma1 mdma2 udma0 udma1 *udma2 udma3 udma4 udma5=20 --=20 =3D mailto:astavitsky@yahoo.com =3D=3D=3D http://www.geocities.com/astavitsky =3D=3D=3D=3D=3D GPG Key 0xF7343C8B: 68DD 1E1B 2C98 D336 E31F C87B 91B9 524= 4 F734 3C8B |_____Alexander Stavitsky=20 --tThc/1wpZn/ma/RB Content-Type: text/x-csrc; charset=us-ascii Content-Disposition: attachment; filename="seagate.c" #include #include //#include #include #define SEAGATE_REPORT_FULL_CAPACITY 0xF1 int get_identity(int fd) { unsigned char args[4+512] = {WIN_IDENTIFY,0,0,1,}; struct hd_driveid *id = (struct hd_driveid *)&args[4]; if (ioctl(fd, HDIO_DRIVE_CMD, &args)) { perror("HDIO_DRIVE_CMD"); fprintf(stderr, "WIN_IDENTIFY failed - trying WIN_PIDENTIFY\n"); args[0] = WIN_PIDENTIFY; if (ioctl(fd, HDIO_DRIVE_CMD, &args)) { perror("HDIO_DRIVE_CMD"); fprintf(stderr, "WIN_PIDENTIFY also failed - giving up\n"); exit(1); } } printf("id->command_set_1: 0x%X\n", id->command_set_1); printf("id->lba_capacity: %lu\n", id->lba_capacity); } /* * result: in LBA mode precisely what is expected * in CHS mode the correct H and S, and C mod 65536. */ int set_feature(int fd) { unsigned char args[4] = {WIN_SETFEATURES,0,0xf1,0}; int i; if (ioctl(fd, HDIO_DRIVE_CMD, &args)) { perror("HDIO_DRIVE_CMD failed WIN_SETFEATURES"); for (i=0; i<4; i++) printf("%d = 0x%X\n", args[i], args[i]); exit(1); } return 0; } main(int argc, char **argv){ int fd, c; char *device = NULL; /* e.g. "/dev/hda" */ int slave = 0; device = argv[1]; if (!device) { fprintf(stderr, "no device specified - " "use e.g. \"seagate /dev/hdb\"\n"); exit(1); } printf("Using device %s\n", device); fd = open(device, O_RDONLY); if (fd == -1) { perror("open"); exit(1); } printf("Sending Set Features F1 subcommand\n"); set_feature(fd); printf("Done.\n"); return 0; } --tThc/1wpZn/ma/RB-- --CUfgB8w4ZwR/yMy5 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.4 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQE67YDgkblSRPc0PIsRAl65AKCyuIbpYuhFZjb+/tGlp4CuRHkVrwCfTZo0 ryxo3vIU6odZh0gg8HVnE7U= =k7DQ -----END PGP SIGNATURE----- --CUfgB8w4ZwR/yMy5-- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/