Re: SCSI Tape corruption - update

2001-07-20 Thread Gérard Roudier
On Fri, 20 Jul 2001, Geert Uytterhoeven wrote: > On Sun, 8 Jul 2001, Geert Uytterhoeven wrote: > > New findings: > > - The problem doesn't happen with kernels <= 2.2.17. It does happen with all > > kernels starting with 2.2.18-pre1. > > - The only related stuff that changed in 2.2.18-pr

Re: SCSI Tape corruption - update

2001-07-20 Thread Geert Uytterhoeven
On Sun, 8 Jul 2001, Geert Uytterhoeven wrote: > New findings: > - The problem doesn't happen with kernels <= 2.2.17. It does happen with all > kernels starting with 2.2.18-pre1. > - The only related stuff that changed in 2.2.18-pre1 seems to be the > Sym53c8xx driver itself. I'll do so

Re: SCSI Tape corruption - update

2001-07-08 Thread Gérard Roudier
On Sun, 8 Jul 2001, Geert Uytterhoeven wrote: > On Thu, 21 Jun 2001, Geert Uytterhoeven wrote: > > On Tue, 8 May 2001, Geert Uytterhoeven wrote: > > > In the mean time I down/upgraded to 2.2.17 on my PPC box (CHRP LongTrail, > > > Sym53c875, HP C5136A DDS1) and I can confirm that the problem d

Re: SCSI Tape corruption - update

2001-07-08 Thread Geert Uytterhoeven
On Thu, 21 Jun 2001, Geert Uytterhoeven wrote: > On Tue, 8 May 2001, Geert Uytterhoeven wrote: > > In the mean time I down/upgraded to 2.2.17 on my PPC box (CHRP LongTrail, > > Sym53c875, HP C5136A DDS1) and I can confirm that the problem does not happen > > under 2.2.17 neither. > > > > My expe

Re: SCSI Tape corruption - update

2001-06-21 Thread Geert Uytterhoeven
On Tue, 8 May 2001, Geert Uytterhoeven wrote: > On Mon, 7 May 2001, Lorenzo Marcantonio wrote: > > On Mon, 7 May 2001, Rob Turk wrote: > > > Have you ruled out hardware failures? There's been a few isolated reports > > > > That tape drive (Sony SDT-9000, less than 2 years of service) works > > pe

Re: SCSI Tape corruption - update

2001-05-09 Thread Ishikawa
For comparison purposes, I use stock kernel 2.4.4. Use scsi tape support as module. Tape drive is HP c1539 (aka 1533a) dds-2. This drive is on the scsi chain of Tekram dc390, tmscsim driver (used as module). Hardware compression is enabled. Under this setup, tar cvbf 20 /dev/st0 large_direc

Re: SCSI Tape corruption - update

2001-05-08 Thread Lorenzo Marcantonio
On Tue, 8 May 2001, Geert Uytterhoeven wrote: > In the mean time I down/upgraded to 2.2.17 on my PPC box (CHRP LongTrail, > Sym53c875, HP C5136A DDS1) and I can confirm that the problem does not happen > under 2.2.17 neither. > > My experiences: > - reading works fine, writing doesn't Same he

Re: SCSI Tape corruption - update

2001-05-07 Thread Geert Uytterhoeven
On Mon, 7 May 2001, Lorenzo Marcantonio wrote: > On Mon, 7 May 2001, Rob Turk wrote: > > Have you ruled out hardware failures? There's been a few isolated reports > > That tape drive (Sony SDT-9000, less than 2 years of service) works > perfectly on Windows NT (were it was before) and even on Lin

Re: SCSI Tape corruption - update

2001-05-07 Thread Lorenzo Marcantonio
On Mon, 7 May 2001, Rob Turk wrote: > Lorenzo, > > Have you ruled out hardware failures? There's been a few isolated reports That tape drive (Sony SDT-9000, less than 2 years of service) works perfectly on Windows NT (were it was before) and even on Linux 2.2 Also the cartridge was brand new.

Re: SCSI Tape corruption - update

2001-05-07 Thread Rob Turk
"Lorenzo Marcantonio" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED]... > > As of my latest build [2.4.5-pre1] I've STILL got the tape corruption > problem. Some new facts: > > (1) It happens only writing the tape (tried exchanging tapes with a > brand new Alpha Digital Tru64 box). I

SCSI Tape corruption - update

2001-05-07 Thread Lorenzo Marcantonio
As of my latest build [2.4.5-pre1] I've STILL got the tape corruption problem. Some new facts: (1) It happens only writing the tape (tried exchanging tapes with a brand new Alpha Digital Tru64 box). I can read her tape, she can't read my tape. Tried with GNU tar and gzip. (2) I suppose it isn't

Re: SCSI Tape Corruption - update 2

2001-04-14 Thread Chip Salzenberg
In article <[EMAIL PROTECTED]> you write: >On Fri, 13 Apr 2001, Nate Eldredge wrote: >> (32 bytes is the size of a cache line.) A memory tester might be >> something to try (I wrote a simple program that seemed to show the >> error better than memtest86; can send it if desired.) > >Already tried

Re: SCSI Tape Corruption - update 2

2001-04-14 Thread Lorenzo Marcantonio
On Fri, 13 Apr 2001, Nate Eldredge wrote: > (32 bytes is the size of a cache line.) A memory tester might be > something to try (I wrote a simple program that seemed to show the > error better than memtest86; can send it if desired.) Already tried that... this system has passed some 20 hours ru

Re: SCSI Tape Corruption - update 2

2001-04-14 Thread Geert Uytterhoeven
On Fri, 13 Apr 2001, Nate Eldredge wrote: > [EMAIL PROTECTED] wrote: > > Well, the 2.2 distributed with Mandrake 7.2 works fine ... :) > > > > Hmmm... 32 CONSECUTIVE bytes are a very peculiar error. What can it be? > > > > Still experimenting... > > I once ran into a problem with 32-byte errors

Re: SCSI Tape Corruption - update 2

2001-04-13 Thread Nate Eldredge
[EMAIL PROTECTED] wrote: > Well, the 2.2 distributed with Mandrake 7.2 works fine ... :) > > Hmmm... 32 CONSECUTIVE bytes are a very peculiar error. What can it be? > > Still experimenting... I once ran into a problem with 32-byte errors appearing in files, and later, in memory. I eventually

Re: SCSI Tape Corruption - update

2001-04-12 Thread Geert Uytterhoeven
On Fri, 13 Apr 2001, Geert Uytterhoeven wrote: > On Thu, 12 Apr 2001 [EMAIL PROTECTED] wrote: > > It seems that the tape is written incorrectly. I wrote some large file > > (300MB) > > and read it back four time. The read copies are all the same. They differ > > from the original only in 32 consec

Re: SCSI Tape Corruption - update

2001-04-12 Thread Geert Uytterhoeven
On Thu, 12 Apr 2001 [EMAIL PROTECTED] wrote: > Still experimenting with my SDT-9000... tried connecting it to another > controller > (2940AU in place of 2904, sorry but I've only Adaptec stuff :). Same > problem. > Tried with another tape (even with an old DDS-2 tape). Same. Even tried > another >

Re: SCSI Tape Corruption - update 2

2001-04-12 Thread Lorenzo Marcantonio
On Thu, 12 Apr 2001, Gérard Roudier wrote: > using a sym53c875 controller. In this case, kernel 2.2 was fine. > > > Now I'll build some old 2.2 kernel to try... > > If 2.2 is ok with your tape, a software error in 2.4 gets very likely, in > my opinion. Well, the 2.2 distributed with Mandrake 7.2

Re: SCSI Tape Corruption - update

2001-04-12 Thread Gérard Roudier
On Thu, 12 Apr 2001 [EMAIL PROTECTED] wrote: > Still experimenting with my SDT-9000... tried connecting it to another > controller > (2940AU in place of 2904, sorry but I've only Adaptec stuff :). Same > problem. > Tried with another tape (even with an old DDS-2 tape). Same. Even tried > anothe

Re: SCSI Tape Corruption - update

2001-04-12 Thread Bob_Tracy
[EMAIL PROTECTED] wrote: > It seems that the tape is written incorrectly. I wrote some large file > (300MB) > and read it back four time. The read copies are all the same. They differ > from the original only in 32 consecutive bytes (the replaced values SEEM > random). Of course, 32 bytes in 300MB

SCSI Tape Corruption - update

2001-04-12 Thread lomarcan
Still experimenting with my SDT-9000... tried connecting it to another controller (2940AU in place of 2904, sorry but I've only Adaptec stuff :). Same problem. Tried with another tape (even with an old DDS-2 tape). Same. Even tried another cable/removing the CDWR drive from the bus. It seems that