Public bug reported:
---------------------------------------
UBUNTU 10.04 LTS
DNPROGS 2.49 and DNPROGS 2.61 (compiled source package)
Expected :
-----------
dncopy -mblock -b512 FromLINUX_file1 ToVMS_file1
dncopy -mblock -b512 FromVMS_file1 ToLinux_file2
should give EXACTLY the same file.....
What happen :
-------------
ToLinux_file2 is greater than FromLINUX_file1.
ToVMS_file1 becomes multiples of 512 bytes !
---------------------------------------
We need to copy binary files exactly to its size, in both direction
(Linux->VMS) or (VMS->Linux).
>From VMS to Linux is OK, but,
>From Linux to VMS is wrong !
>From Linux to VMS is wrong, we found that the transferred files are a little
>bigger (they become multiples of 512 bytes).
The problem is the same with the “Linux fal service” as with the
“dncopy” command.
dndir command example :
- dndir -mblock -b512 ‘nodename”user password”::[]file2.bin .
- dndir -mblock -b512 linuxbinaryfile.bin ‘nodename”user
password”::[]file1.bin
fal parameters
/etc/dnetd.conf :
FAL 17 Y none fal -ae –f
/etc/dnetd.conf.fal
/etc/dnetd.conf.fal
.bin b 512
.exe b 512
.txt r
etc…
-----------------------------------
Example with a test file that contains 43251 characters = “84 sectors + 243
bytes” : zi_43215.bin
(On VMS hardware) dump /header zi_43215.bin
…
Structure level and version 2, 1
…
Record type : Fixed
File organization : Sequential
Record attributes : <none spefified>
Record size : 512
Highest block : 90
End of file block : 85
End of file byte : 243
Bucket size : 0
Fixed control area size : 0
Etc…
dncopy -mblock -b512 ‘nodename”user password”::ZI_43251.BIN .
ls –l
-rw-r—r-- 1 user user zi_43251 2017-11-13 17:54 zi_43251.bin
(It is OK)
// I delete the file on VMS, than I do :
dncopy -mblock -b512 zi_43251.bin ‘nodename”user
password”::ZI_43251.BIN
(On VMS hardware) dump/header zi_43215.bin
…
Structure level and version 2, 1
…
Record type : Fixed
File organization : Sequential
Record attributes : <none spefified>
Record size : 512
Highest block : 90
End of file block : 86
End of file byte : 0
Bucket size : 0
Fixed control area size : 0
Etc…
(It is WRONG)
--------------------------------------------------------------
We tried to understand and correct the problem, but without success !
Is it a bug or a limitation ?
Perhaps we make mistakes in parameters usage ?
Do you know if there is a workaround or fix ?
** Affects: dnprogs (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1731996
Title:
dncopy : binary filesize becomes multiples of 512 bytes
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