Date: Wed, 26 May 1999 20:17:01 -0500 From: David Kelly <dkelly@HiWAAY.net> To: freebsd-scsi@freebsd.org Subject: proper mode page values? Message-ID: <199905270117.UAA48835@nospam.hiwaay.net>
next in thread | raw e-mail | index | archive | help
My formerly wonderful IBM DCAS 34330 narrow drive is acting up on my little FreeBSD system (a 486/133). Several months ago I had to use the Adaptec 2940 built in utility to scan the drive for bad blocks. It found several. Followed up with a clean installation of FreeBSD 3.1. Now I'm getting "indefinite wait" messages from swap_pager, much like Dag-Erling Smorgrav reported on 19 Feb 1999, something like this: swap_pager: indefinite wait buffer: device: 0x30401, blkno: 264, size: 4096 The problem blocks are always 264, 272, and 496. And to make things maximally fun, it only happens when reading variable block sized QIC-1000 tapes with an Archive Anaconda. Fixed block size on a QIC-150 runs nicely. The variable QIC-1000 starts and stops and starts and stops with every block. sa1 at ahc0 bus 0 target 6 lun 0 sa1: <ARCHIVE ANCDA 2750 28077 -003> Removable Sequential Access SCSI-2 device sa1: 5.000MB/s transfers (5.000MHz, offset 15) Tried using camcontrol to view my bad block lists. Doesn't work on that IBM drive, nor the IBM drive on this machine: nospam: [1031] camcontrol defects -n da -u 0 -G camcontrol: no defect list format specified nospam: [1032] camcontrol defects -n da -u 0 -f block -G error reading defect list: Input/output error nospam: [1033] camcontrol defects -n da -u 0 -f bfi -G error reading defect list: Input/output error nospam: [1034] camcontrol defects -n da -u 0 -f phys -G error reading defect list: Input/output error nospam: [1035] camcontrol defects -n da -u 0 -f phys -P error reading defect list: Input/output error nospam: [1036] camcontrol defects -n da -u 0 -f bfi -P error reading defect list: Input/output error nospam: [1037] camcontrol defects -n da -u 0 -f block -P error reading defect list: Input/output error So then I go looking at mode pages to see what is set and to see if by any chance the drive was told not to substitute replacements for weakening blocks: nospam: [1038] camcontrol modepage -n da -u 0 -m 1 -P 2 AWRE (Auto Write Reallocation Enbld): 0 ARRE (Auto Read Reallocation Enbld): 0 TB (Transfer Block): 0 RC (Read Continuous): 0 EER (Enable Early Recovery): 0 PER (Post Error): 0 DTE (Disable Transfer on Error): 0 DCR (Disable Correction): 0 Read Retry Count: 1 Correction Span: 144 Head Offset Count: 0 Data Strobe Offset Count: 0 Write Retry Count: 1 Recovery Time Limit: 0 nospam: [1039] camcontrol modepage -n da -u 0 -m 1 -P 3 AWRE (Auto Write Reallocation Enbld): 1 ARRE (Auto Read Reallocation Enbld): 1 TB (Transfer Block): 0 RC (Read Continuous): 0 EER (Enable Early Recovery): 0 PER (Post Error): 0 DTE (Disable Transfer on Error): 0 DCR (Disable Correction): 0 Read Retry Count: 1 Correction Span: 144 Head Offset Count: 0 Data Strobe Offset Count: 0 Write Retry Count: 1 Recovery Time Limit: 0 The DCAS defaults are itentical to the stored values shown above on my: da0 at ncr0 bus 0 target 0 lun 0 da0: <IBM OEM DCHS09W 2222> Fixed Direct Access SCSI-2 device da0: 20.000MB/s transfers (10.000MHz, offset 15, 16bit), Tagged Queueing Enabled da0: 8689MB (17796077 512 byte sectors: 255H 63S/T 1107C) The DCAS is on a version 1.16 Adaptec 2940, but on a different computer: ahc0: <Adaptec 2940 SCSI adapter> rev 0x00 int a irq 15 on pci0.9.0 ahc0: aic7870 Single Channel A, SCSI Id=7, 16/255 SCBs So much for the background info. To the meat of the matter: How can I get bad block lists from IBM SCSI drives? Am I doing it wrong or does it simply not work yet? How to scan a SCSI drive and reallocate bad blocks? Are my modepage parameters sane? Was looking at page 0x01 because I was worried about error handling. But here's the popular 0x08 too: nospam: [1043] camcontrol modepage -n da -u 0 -m 8 -P 3 IC: 0 ABPF: 0 CAP: 0 DISC: 0 SIZE: 0 WCE: 0 MF: 0 RCD: 0 Demand Retention Priority: 1 Write Retention Priority: 1 Disable Pre-fetch Transfer Length: 65535 Minimum Pre-fetch: 0 Maximum Pre-fetch: 65535 Maximum Pre-fetch Ceiling: 65535 nospam: [1044] -- David Kelly N4HHE, dkelly@nospam.hiwaay.net ===================================================================== The human mind ordinarily operates at only ten percent of its capacity -- the rest is overhead for the operating system. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199905270117.UAA48835>