* 1.5.12: mt sees incorrect maximum block size
@ 2004-12-14 22:36 Richard Simon
2004-12-15 9:05 ` Corinna Vinschen
0 siblings, 1 reply; 4+ messages in thread
From: Richard Simon @ 2004-12-14 22:36 UTC (permalink / raw)
To: cygwin
when I attempt to set the correct block size with mt (or try to do so with tar) I am unable to do so.
mt status 2 reports a maximum block size of 65535, whereas the windows driver and the winTarSCSI utility both report a much larger maximum block size of 16777214
I can use the winTarSCSI utility to write tapes with a block size of 262144, but tar under cygwin will not write with a block size larger than 65535.
I have tried reinstalling the tape driver and reinstalling cygwin.
I'm using cygwin 1.5.12, mt 2.3, tat 1.13.25.
Installed on Windows XP professional, Service Pack 1.
PIII, 800Mhz, 1GB ram.
Why is cygwin seeing this incorrectly and how do I fix it?
below I've pasted my cygcheck file
Richard Simon
Giant Killer Robots
361 Brannan St.
San Francisco, CA 94107
(415) 777-2477
Cygwin Configuration Diagnostics
Current System Time: Tue Dec 14 14:32:05 2004
Windows XP Professional Ver 5.1 Build 2600 Service Pack 1
Path: C:\cygwin\usr\local\bin
C:\cygwin\bin
C:\cygwin\bin
C:\cygwin\usr\X11R6\bin
C
c:\Perl\bin\
c:\Program Files\AliasWavefront\Maya5.0\bin
c:\Program Files\Shake-v2.46.0116
c:\WINDOWS\system32
c:\WINDOWS
c:\WINDOWS\System32\Wbem
c:\rush\bin
w:\Approved\utilities\tools
c:\Program Files\Sonic\MyDVD
.\
c:\Program Files\Sonic\MyDVD
.\
c:\PROGRA~1\ABSOLU~1
c:\Program Files\Common Files\Ulead Systems\MPEG
c:\Program Files\Sonic\MyDVD
%
c:\PROGRA~1\ABSOLU~1
Output from C:\cygwin\bin\id.exe (nontsec)
UID: 10500(administrator) GID: 10545(mkgroup_l_d)
10545(mkgroup_l_d)
Output from C:\cygwin\bin\id.exe (ntsec)
UID: 10500(administrator) GID: 10545(mkgroup_l_d)
0(root) 544(Administrators) 545(Users)
10545(mkgroup_l_d)
SysDir: C:\WINDOWS\System32
WinDir: C:\WINDOWS
HOME = `c:\Documents and Settings\Administrator'
MAKE_MODE = `unix'
PWD = `/cygdrive/c/Documents and Settings/Administrator'
USER = `administrator'
ALLUSERSPROFILE = `C:\Documents and Settings\All Users'
APPDATA = `C:\Documents and Settings\Administrator\Application Data'
COMMONPROGRAMFILES = `C:\Program Files\Common Files'
COMPUTERNAME = `SILVAR'
COMSPEC = `C:\WINDOWS\system32\cmd.exe'
CVS_RSH = `/bin/ssh'
EYEON_LICENSE_FILE = `@OLDCALCULON'
HOMEDRIVE = `C:'
HOMEPATH = `\Documents and Settings\Administrator'
HOSTNAME = `silvar'
INFOPATH = `/usr/local/info:/usr/info:/usr/share/info:/usr/autotool/devel/info:/usr/autotool/stable/info:'
LOGONSERVER = `\\BILLY'
MANPATH = `/usr/local/man:/usr/man:/usr/share/man:/usr/autotool/devel/man:'
MAYA_HELP_URL = `http://mayadocs.killerobot.com/Maya5.0/en_US/'
NR_ICON_PATH = `\\calculon\central\z\Approved\shake\nreal25\icons'
NR_INCLUDE_PATH = `\\calculon\central\z\Approved\shake\nreal25\include_merge'
NUMBER_OF_PROCESSORS = `2'
OLDPWD = `/usr/bin'
OS = `Windows_NT'
PATHEXT = `.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH'
PRINTER = `\\voltar\HP LaserJet 3300 Series PCL 6'
PROCESSOR_ARCHITECTURE = `x86'
PROCESSOR_IDENTIFIER = `x86 Family 6 Model 8 Stepping 6, GenuineIntel'
PROCESSOR_LEVEL = `6'
PROCESSOR_REVISION = `0806'
PROGRAMFILES = `C:\Program Files'
PROMPT = `$P$G'
PS1 = `\[\033]0;\w\007
\033[32m\]\u@\h \[\033[33m\w\033[0m\]
$ '
RUSH_DIR = `c:\rush'
SESSIONNAME = `Console'
SHLVL = `1'
SYSTEMDRIVE = `C:'
SYSTEMROOT = `C:\WINDOWS'
TEMP = `C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp'
TERM = `cygwin'
TMP = `C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp'
USERDNSDOMAIN = `KILLEROBOT.COM'
USERDOMAIN = `KILLEROBOT'
USERNAME = `administrator'
USERPROFILE = `C:\Documents and Settings\Administrator'
WINDIR = `C:\WINDOWS'
_ = `/usr/bin/cygcheck'
POSIXLY_CORRECT = `1'
HKEY_CURRENT_USER\Software\Cygnus Solutions
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\Program Options
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2
(default) = `/cygdrive'
cygdrive flags = 0x00000022
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/
(default) = `C:\cygwin'
flags = 0x0000000a
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/bin
(default) = `C:\cygwin/bin'
flags = 0x0000000a
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/lib
(default) = `C:\cygwin/lib'
flags = 0x0000000a
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\Program Options
a: fd N/A N/A
c: hd NTFS 19586Mb 87% CP CS UN PA FC
d: cd N/A N/A
m: net NTFS 29306Mb 55% CP CS UN PA FC
q: net NTFS 8738Mb 74% CP CS UN PA FC
s: net NTFS 8738Mb 74% CP CS UN PA FC
v: net NTFS 350004Mb 93% CP CS UN PA FC Video
w: net NTFS 8738Mb 74% CP CS UN PA FC
x: net NTFS 5238279Mb 89% CP CS UN PA LSI-0
z: net NTFS 5238279Mb 89% CP CS UN PA LSI-0
C:\cygwin / system binmode
C:\cygwin/bin /usr/bin system binmode
C:\cygwin/lib /usr/lib system binmode
. /cygdrive system binmode,cygdrive
Found: C:\cygwin\bin\awk.exe
Found: C:\cygwin\bin\bash.exe
Found: C:\cygwin\bin\cat.exe
Found: w:\Approved\utilities\tools\cat.exe
Warning: C:\cygwin\bin\cat.exe hides w:\Approved\utilities\tools\cat.exe
Found: C:\cygwin\bin\cp.exe
Found: w:\Approved\utilities\tools\cp.exe
Warning: C:\cygwin\bin\cp.exe hides w:\Approved\utilities\tools\cp.exe
Not Found: cpp (good!)
Found: C:\cygwin\bin\find.exe
Found: w:\Approved\utilities\tools\find.exe
Warning: C:\cygwin\bin\find.exe hides w:\Approved\utilities\tools\find.exe
Not Found: gcc
Not Found: gdb
Found: C:\cygwin\bin\grep.exe
Found: w:\Approved\utilities\tools\grep.exe
Warning: C:\cygwin\bin\grep.exe hides w:\Approved\utilities\tools\grep.exe
Not Found: ld
Found: C:\cygwin\bin\ls.exe
Found: w:\Approved\utilities\tools\ls.exe
Warning: C:\cygwin\bin\ls.exe hides w:\Approved\utilities\tools\ls.exe
Not Found: make
Found: C:\cygwin\bin\mv.exe
Found: w:\Approved\utilities\tools\mv.exe
Warning: C:\cygwin\bin\mv.exe hides w:\Approved\utilities\tools\mv.exe
Found: C:\cygwin\bin\rm.exe
Found: w:\Approved\utilities\tools\rm.exe
Warning: C:\cygwin\bin\rm.exe hides w:\Approved\utilities\tools\rm.exe
Found: C:\cygwin\bin\sed.exe
Found: w:\Approved\utilities\tools\sed.exe
Warning: C:\cygwin\bin\sed.exe hides w:\Approved\utilities\tools\sed.exe
Found: C:\cygwin\bin\sh.exe
Found: w:\Approved\utilities\tools\sh.exe
Warning: C:\cygwin\bin\sh.exe hides w:\Approved\utilities\tools\sh.exe
Found: C:\cygwin\bin\tar.exe
Found: w:\Approved\utilities\tools\tar.exe
Warning: C:\cygwin\bin\tar.exe hides w:\Approved\utilities\tools\tar.exe
18k 2004/07/06 C:\cygwin\bin\cygcharset-1.dll - os=4.0 img=1.0 sys=4.0
"cygcharset-1.dll" v0.0 ts=2004/7/6 11:09
40k 2004/10/10 C:\cygwin\bin\cygform-8.dll - os=4.0 img=1.0 sys=4.0
"cygform-8.dll" v0.0 ts=2004/10/10 1:33
45k 2001/04/25 C:\cygwin\bin\cygform5.dll - os=4.0 img=1.0 sys=4.0
"cygform5.dll" v0.0 ts=2001/4/24 22:28
35k 2002/01/09 C:\cygwin\bin\cygform6.dll - os=4.0 img=1.0 sys=4.0
"cygform6.dll" v0.0 ts=2002/1/8 22:03
48k 2003/08/09 C:\cygwin\bin\cygform7.dll - os=4.0 img=1.0 sys=4.0
"cygform7.dll" v0.0 ts=2003/8/9 2:25
28k 2003/07/20 C:\cygwin\bin\cyggdbm-3.dll - os=4.0 img=1.0 sys=4.0
"cyggdbm-3.dll" v0.0 ts=2003/7/20 0:58
30k 2003/08/11 C:\cygwin\bin\cyggdbm-4.dll - os=4.0 img=1.0 sys=4.0
"cyggdbm-4.dll" v0.0 ts=2003/8/10 19:12
19k 2003/03/22 C:\cygwin\bin\cyggdbm.dll - os=4.0 img=1.0 sys=4.0
"cyggdbm.dll" v0.0 ts=2002/2/19 19:05
15k 2003/07/20 C:\cygwin\bin\cyggdbm_compat-3.dll - os=4.0 img=1.0 sys=4.0
"cyggdbm_compat-3.dll" v0.0 ts=2003/7/20 1:00
15k 2003/08/11 C:\cygwin\bin\cyggdbm_compat-4.dll - os=4.0 img=1.0 sys=4.0
"cyggdbm_compat-4.dll" v0.0 ts=2003/8/10 19:13
107k 2004/07/06 C:\cygwin\bin\cyggettextlib-0-14-1.dll - os=4.0 img=1.0 sys=4.0
"cyggettextlib-0-14-1.dll" v0.0 ts=2004/7/6 10:56
17k 2004/07/06 C:\cygwin\bin\cyggettextpo-0.dll - os=4.0 img=1.0 sys=4.0
"cyggettextpo-0.dll" v0.0 ts=2004/7/6 10:56
190k 2004/07/06 C:\cygwin\bin\cyggettextsrc-0-14-1.dll - os=4.0 img=1.0 sys=4.0
"cyggettextsrc-0-14-1.dll" v0.0 ts=2004/7/6 10:56
17k 2001/06/28 C:\cygwin\bin\cyghistory4.dll - os=4.0 img=1.0 sys=4.0
"cyghistory4.dll" v0.0 ts=2001/1/6 20:34
29k 2003/08/10 C:\cygwin\bin\cyghistory5.dll - os=4.0 img=1.0 sys=4.0
"cyghistory5.dll" v0.0 ts=2003/8/10 16:16
25k 2004/10/12 C:\cygwin\bin\cyghistory6.dll - os=4.0 img=1.0 sys=4.0
"cyghistory6.dll" v0.0 ts=2004/10/11 23:51
991k 2004/07/06 C:\cygwin\bin\cygiconv-2.dll - os=4.0 img=1.0 sys=4.0
"cygiconv-2.dll" v0.0 ts=2004/7/6 11:10
22k 2001/12/13 C:\cygwin\bin\cygintl-1.dll - os=4.0 img=1.0 sys=4.0
"cygintl-1.dll" v0.0 ts=2001/12/13 1:28
37k 2003/08/10 C:\cygwin\bin\cygintl-2.dll - os=4.0 img=1.0 sys=4.0
"cygintl-2.dll" v0.0 ts=2003/8/10 14:50
54k 2004/07/06 C:\cygwin\bin\cygintl-3.dll - os=4.0 img=1.0 sys=4.0
"cygintl-3.dll" v0.0 ts=2004/7/6 10:51
12k 2003/02/17 C:\cygwin\bin\cygioperm-0.dll - os=4.0 img=1.0 sys=4.0
"cygioperm-0.dll" v0.0 ts=2003/2/17 11:58
22k 2004/10/10 C:\cygwin\bin\cygmenu-8.dll - os=4.0 img=1.0 sys=4.0
"cygmenu-8.dll" v0.0 ts=2004/10/10 1:33
26k 2001/04/25 C:\cygwin\bin\cygmenu5.dll - os=4.0 img=1.0 sys=4.0
"cygmenu5.dll" v0.0 ts=2001/4/24 22:27
20k 2002/01/09 C:\cygwin\bin\cygmenu6.dll - os=4.0 img=1.0 sys=4.0
"cygmenu6.dll" v0.0 ts=2002/1/8 22:03
29k 2003/08/09 C:\cygwin\bin\cygmenu7.dll - os=4.0 img=1.0 sys=4.0
"cygmenu7.dll" v0.0 ts=2003/8/9 2:25
74k 2004/10/10 C:\cygwin\bin\cygncurses++-8.dll - os=4.0 img=1.0 sys=4.0
"cygncurses++-8.dll" v0.0 ts=2004/10/10 1:33
156k 2001/04/25 C:\cygwin\bin\cygncurses++5.dll - os=4.0 img=1.0 sys=4.0
"cygncurses++5.dll" v0.0 ts=2001/4/24 22:29
175k 2002/01/09 C:\cygwin\bin\cygncurses++6.dll - os=4.0 img=1.0 sys=4.0
"cygncurses++6.dll" v0.0 ts=2002/1/8 22:03
216k 2004/10/10 C:\cygwin\bin\cygncurses-8.dll - os=4.0 img=1.0 sys=4.0
"cygncurses-8.dll" v0.0 ts=2004/10/10 1:25
226k 2001/04/25 C:\cygwin\bin\cygncurses5.dll - os=4.0 img=1.0 sys=4.0
"cygncurses5.dll" v0.0 ts=2001/4/24 22:17
202k 2002/01/09 C:\cygwin\bin\cygncurses6.dll - os=4.0 img=1.0 sys=4.0
"cygncurses6.dll" v0.0 ts=2002/1/8 22:03
224k 2003/08/09 C:\cygwin\bin\cygncurses7.dll - os=4.0 img=1.0 sys=4.0
"cygncurses7.dll" v0.0 ts=2003/8/9 2:24
13k 2004/10/10 C:\cygwin\bin\cygpanel-8.dll - os=4.0 img=1.0 sys=4.0
"cygpanel-8.dll" v0.0 ts=2004/10/10 1:32
15k 2001/04/25 C:\cygwin\bin\cygpanel5.dll - os=4.0 img=1.0 sys=4.0
"cygpanel5.dll" v0.0 ts=2001/4/24 22:27
12k 2002/01/09 C:\cygwin\bin\cygpanel6.dll - os=4.0 img=1.0 sys=4.0
"cygpanel6.dll" v0.0 ts=2002/1/8 22:03
19k 2003/08/09 C:\cygwin\bin\cygpanel7.dll - os=4.0 img=1.0 sys=4.0
"cygpanel7.dll" v0.0 ts=2003/8/9 2:24
62k 2003/12/11 C:\cygwin\bin\cygpcre-0.dll - os=4.0 img=1.0 sys=4.0
"cygpcre-0.dll" v0.0 ts=2003/12/11 9:01
63k 2003/04/11 C:\cygwin\bin\cygpcre.dll - os=4.0 img=1.0 sys=4.0
"cygpcre.dll" v0.0 ts=2003/4/11 1:31
9k 2003/12/11 C:\cygwin\bin\cygpcreposix-0.dll - os=4.0 img=1.0 sys=4.0
"cygpcreposix-0.dll" v0.0 ts=2003/12/11 9:01
61k 2003/04/11 C:\cygwin\bin\cygpcreposix.dll - os=4.0 img=1.0 sys=4.0
"cygpcreposix.dll" v0.0 ts=2003/4/11 1:31
22k 2002/06/09 C:\cygwin\bin\cygpopt-0.dll - os=4.0 img=1.0 sys=4.0
"cygpopt-0.dll" v0.0 ts=2002/6/8 22:45
108k 2001/06/28 C:\cygwin\bin\cygreadline4.dll - os=4.0 img=1.0 sys=4.0
"cygreadline4.dll" v0.0 ts=2001/1/6 20:34
148k 2003/08/10 C:\cygwin\bin\cygreadline5.dll - os=4.0 img=1.0 sys=4.0
"cygreadline5.dll" v0.0 ts=2003/8/10 16:16
144k 2004/10/12 C:\cygwin\bin\cygreadline6.dll - os=4.0 img=1.0 sys=4.0
"cygreadline6.dll" v0.0 ts=2004/10/11 23:51
62k 2004/10/10 C:\cygwin\bin\cygz.dll - os=4.0 img=1.0 sys=4.0
"cygz.dll" v0.0 ts=2004/10/9 21:09
1114k 2004/11/10 C:\cygwin\bin\cygwin1.dll - os=4.0 img=1.0 sys=4.0
"cygwin1.dll" v0.0 ts=2004/11/10 5:34
Cygwin DLL version info:
DLL version: 1.5.12
DLL epoch: 19
DLL bad signal mask: 19005
DLL old termios: 5
DLL malloc env: 28
API major: 0
API minor: 116
Shared data: 4
DLL identifier: cygwin1
Mount registry: 2
Cygnus registry name: Cygnus Solutions
Cygwin registry name: Cygwin
Program options name: Program Options
Cygwin mount registry name: mounts v2
Cygdrive flags: cygdrive flags
Cygdrive prefix: cygdrive prefix
Cygdrive default prefix:
Build date: Wed Nov 10 08:34:47 EST 2004
Shared id: cygwin1S4
Cygwin Package Information
Last downloaded files to: c:\Cygwin\packages
Last downloaded files from: ftp://mirror.mcs.anl.gov/pub/cygwin.com
Package Version
_update-info-dir 00230-1
ash 20040127-1
base-files 3.1-4
base-passwd 2.1-1
bash 2.05b-16
bzip2 1.0.2-6
cpio 2.5-3
cygutils 1.2.5-1
cygwin 1.5.12-1
cygwin-doc 1.3-7
diffutils 2.8.7-1
editrights 1.01-1
fileutils 4.1-2
findutils 4.2.10-5
gawk 3.1.4-3
gdbm 1.8.3-7
grep 2.5-1
groff 1.18.1-2
gzip 1.3.5-1
ioperm 0.4-1
less 381-1
libcharset1 1.9.2-1
libgdbm 1.8.0-5
libgdbm-devel 1.8.3-7
libgdbm3 1.8.3-3
libgdbm4 1.8.3-7
libgettextpo0 0.14.1-1
libiconv 1.9.2-1
libiconv2 1.9.2-1
libintl1 0.10.40-1
libintl2 0.12.1-3
libintl3 0.14.1-1
libncurses5 5.2-1
libncurses6 5.2-8
libncurses7 5.3-4
libncurses8 5.4-1
libpcre 4.1-1
libpcre0 4.5-1
libpopt0 1.6.4-4
libreadline4 4.1-2
libreadline5 4.3-5
libreadline6 5.0-1
login 1.9-7
man 1.5o1-1
mktemp 1.5-3
mt 2.3-1
ncurses 5.4-1
readline 5.0-1
sed 4.1.2-1
sh-utils 2.0.15-4
tar 1.13.25-5
tcsh 6.13.00-2
termcap 20021106-2
terminfo 5.4_20041009-1
texinfo 4.2-4
textutils 2.0.21-1
which 1.5-2
zlib 1.2.2-1
Use -h to see help about each section
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: 1.5.12: mt sees incorrect maximum block size
2004-12-14 22:36 1.5.12: mt sees incorrect maximum block size Richard Simon
@ 2004-12-15 9:05 ` Corinna Vinschen
2004-12-15 18:33 ` Brian Dessent
0 siblings, 1 reply; 4+ messages in thread
From: Corinna Vinschen @ 2004-12-15 9:05 UTC (permalink / raw)
To: cygwin
On Dec 14 14:36, Richard Simon wrote:
> when I attempt to set the correct block size with mt (or try to do so with tar) I am unable to do so.
> mt status 2 reports a maximum block size of 65535, whereas the windows driver and the winTarSCSI utility both report a much larger maximum block size of 16777214
>
> I can use the winTarSCSI utility to write tapes with a block size of 262144, but tar under cygwin will not write with a block size larger than 65535.
Now that you mention it...
While rewriting the Cygwin tape driver code a couple of months ago, I
found the same problem. I've just drawn the wrong conclusion.
According to the documentation, my Tandberg SLR7 drive is capable of
writing 262144 byte blocks and the XP drivers properties dialog also
reports a max block size of 262144.
But the Windows function reports 65536 as maximum block size. Yes, it's
actually Windows which returns that value. I just wrote a small
testcase(tm), which verifies that without involving Cygwin.
======== SNIP ========
#include <windows.h>
#include <stdio.h>
int
main (int argc, char **argv)
{
TAPE_SET_MEDIA_PARAMETERS smp;
TAPE_GET_DRIVE_PARAMETERS dp;
TAPE_GET_MEDIA_PARAMETERS mp;
DWORD len, err;
HANDLE fh = CreateFile ("\\\\.\\tape0", GENERIC_READ | GENERIC_WRITE,
0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
if (fh != INVALID_HANDLE_VALUE)
{
if (argc > 1)
{
smp.BlockSize = strtoul (argv[1], NULL, 0);
if (smp.BlockSize > 0)
{
printf ("Try setting BlockSize to %lu\n", smp.BlockSize);
while ((err = SetTapeParameters (fh, SET_TAPE_MEDIA_INFORMATION,
(void *) &smp))
== ERROR_MEDIA_CHANGED)
;
if (err)
printf ("SetTapeParameters returned Win32 error %lu\n", err);
}
}
len = sizeof dp;
while ((err = GetTapeParameters (fh, GET_TAPE_DRIVE_INFORMATION,
&len, &dp)) == ERROR_MEDIA_CHANGED)
;
if (!err)
{
printf ("DefaultBlockSize: %lu\n", dp.DefaultBlockSize);
printf ("MinimumBlockSize: %lu\n", dp.MinimumBlockSize);
printf ("MaximumBlockSize: %lu\n", dp.MaximumBlockSize);
}
len = sizeof mp;
while ((err = GetTapeParameters (fh, GET_TAPE_MEDIA_INFORMATION,
&len, &mp)) == ERROR_MEDIA_CHANGED)
;
if (!err)
{
printf ("CurrentBlockSize: %lu\n", mp.BlockSize);
}
CloseHandle (fh);
}
return 0;
}
======== SNAP ========
$ gcc mt-test.c -o mt-test
$ ./mt-test
DefaultBlockSize: 512
MinimumBlockSize: 1
MaximumBlockSize: 65536
CurrentBlockSize: 512
$ ./mt-test 65536
Try setting BlockSize to 65536
DefaultBlockSize: 512
MinimumBlockSize: 1
MaximumBlockSize: 65536
CurrentBlockSize: 65536
$ ./mt-test 131072
Try setting BlockSize to 131072
SetTapeParameters returned Win32 error 87
DefaultBlockSize: 512
MinimumBlockSize: 1
MaximumBlockSize: 65536
CurrentBlockSize: 65536
So, as you can see, the Windows NT tape functions doesn't allow me to set
the block size to more than 64K, too. That's the same functionality used
inside of Cygwin. I have no idea how to workaround that. I also didn't
find anything useful on the Web so far.
I'd *love* to get that solved, but I don't know how. I'm going to ask
someone who's writing tape drivers for Windows, perhaps he has a clue.
Other than that, I'm open to any useful hint from the community.
Corinna
--
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Project Co-Leader mailto:cygwin@cygwin.com
Red Hat, Inc.
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: 1.5.12: mt sees incorrect maximum block size
2004-12-15 9:05 ` Corinna Vinschen
@ 2004-12-15 18:33 ` Brian Dessent
2004-12-16 13:14 ` Corinna Vinschen
0 siblings, 1 reply; 4+ messages in thread
From: Brian Dessent @ 2004-12-15 18:33 UTC (permalink / raw)
To: cygwin
Corinna Vinschen wrote:
> So, as you can see, the Windows NT tape functions doesn't allow me to set
> the block size to more than 64K, too. That's the same functionality used
> inside of Cygwin. I have no idea how to workaround that. I also didn't
> find anything useful on the Web so far.
>
> I'd *love* to get that solved, but I don't know how. I'm going to ask
> someone who's writing tape drivers for Windows, perhaps he has a clue.
> Other than that, I'm open to any useful hint from the community.
A little googling found the following, but I don't have a tape drive so
I cannot test it...
<http://www.complanguages.com/Reading_128K_Blocks_off_a_DLT_via_Adaptec_AHA2940AU-7710081-5505-a.html>
Brian
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: 1.5.12: mt sees incorrect maximum block size
2004-12-15 18:33 ` Brian Dessent
@ 2004-12-16 13:14 ` Corinna Vinschen
0 siblings, 0 replies; 4+ messages in thread
From: Corinna Vinschen @ 2004-12-16 13:14 UTC (permalink / raw)
To: cygwin
On Dec 15 10:36, Brian Dessent wrote:
> Corinna Vinschen wrote:
>
> > So, as you can see, the Windows NT tape functions doesn't allow me to set
> > the block size to more than 64K, too. That's the same functionality used
> > inside of Cygwin. I have no idea how to workaround that. I also didn't
> > find anything useful on the Web so far.
> >
> > I'd *love* to get that solved, but I don't know how. I'm going to ask
> > someone who's writing tape drivers for Windows, perhaps he has a clue.
> > Other than that, I'm open to any useful hint from the community.
>
> A little googling found the following, but I don't have a tape drive so
> I cannot test it...
> <http://www.complanguages.com/Reading_128K_Blocks_off_a_DLT_via_Adaptec_AHA2940AU-7710081-5505-a.html>
Thanks Brian, that was very interesting. I tried it with my Adaptec U160
but unfortunately nothing changed. I had a quick look into winTar, but,
alas, that's a proprietary application. If there's actually some
problem with the SCSI adapter, then winTar apparently knows how to get
around it. I don't know much about the SCSI low level interface...
Corinna
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Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Project Co-Leader mailto:cygwin@cygwin.com
Red Hat, Inc.
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2004-12-14 22:36 1.5.12: mt sees incorrect maximum block size Richard Simon
2004-12-15 9:05 ` Corinna Vinschen
2004-12-15 18:33 ` Brian Dessent
2004-12-16 13:14 ` Corinna Vinschen
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