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тАО07-27-2009 07:36 AM
тАО07-27-2009 07:36 AM
SFTP and large files
I can't find any restrictions on transferring large files. The only thing I found in the release notes said:
3.10.14 SSH Transferring Large Files
This section includes restrictions pertaining to transferring large files:
* The minimum version of DECC$SHR running on your system must be that which was released with OpenVMS Version 8.2.
* You may need to adjust memory parameters (WSDEF, WSQUO, WSEXTENT, and PGFLQUO) to accommodate the memory requirements of the file copy client and server. The exact value depends on system resources and virtual memory configuration. For more information, see Section 2.3. For ssh filecopy, testing has shown that the main parameter to adjust is PGFLQUO.
Another strange thing is that if you try the GET multiple times, the number reported in the "packet too long" message varies.
Here is output from one such GET:
sftp> ls -l
drwxrw-rw- 1 user group 0 Jul 13 10:44 archive
-rw-rw-rw- 1 user group 7942 Jul 25 00:54 dly0967
-rw-rw-rw- 1 user group 4332 Apr 28 00:52 dly0967.04272009
-rw-rw-rw- 1 user group 22382 May 2 01:07 dly0967.05012009
-rw-rw-rw- 1 user group 4332 May 6 00:55 dly0967.05052009
-rw-rw-rw- 1 user group 1083 May 8 00:54 dly0967.05072009
-rw-rw-rw- 1 user group 4332 May 14 00:54 dly0967.05132009
-rw-rw-rw- 1 user group 1444 May 15 00:58 dly0967.05142009
-rw-rw-rw- 1 user group 1444 May 19 00:54 dly0967.05182009
-rw-rw-rw- 1 user group 34295 Jun 2 01:30 dly0967.06012009
-rw-rw-rw- 1 user group 4332 Jun 3 00:59 dly0967.06022009
-rw-rw-rw- 1 user group 1083 Jun 4 00:58 dly0967.06032009
-rw-rw-rw- 1 user group 4332 Jun 10 00:54 dly0967.06092009
-rw-rw-rw- 1 user group 4693 Jun 19 00:55 dly0967.06182009
-rw-rw-rw- 1 user group 4332 Jul 2 01:15 dly0967.07012009
-rw-rw-rw- 1 user group 1083 Jul 10 01:03 dly0967.07092009
-rw-rw-rw- 1 user group 7942 Jul 11 00:56 dly0967.07102009
-rw-rw-rw- 1 user group 4332 Jul 15 00:58 dly0967.07142009
-rw-rw-rw- 1 user group 3971 Jul 16 00:58 dly0967.07152009
-rw-rw-rw- 1 user group 1083 Jul 21 00:56 dly0967.07202009
-rw-rw-rw- 1 user group 7942 Jul 24 00:55 dly0967.07232009
-rw-rw-rw- 1 user group 7942 Jul 25 00:54 dly0967.07242009
-rw-rw-rw- 1 user group 0 Jul 6 13:10 ERS
-rw-rw-rw- 1 user group 93670 Jun 3 19:18 findtl0967.01012009
-rw-rw-rw- 1 user group 94010 May 15 14:55 findtl0967.04012009
-rw-rw-rw- 1 user group 93840 Jun 15 16:53 findtl0967.05012009
-rw-rw-rw- 1 user group 94180 Jul 13 13:52 findtl0967.06012009
-rw-rw-rw- 1 user group 92480 Jun 3 19:14 findtl0967.09012008
-rw-rw-rw- 1 user group 92480 Jun 3 19:15 findtl0967.10012008
-rw-rw-rw- 1 user group 92990 Jun 3 19:16 findtl0967.11012008
-rw-rw-rw- 1 user group 92820 Jun 3 19:17 findtl0967.12012008
-rw-rw-rw- 1 user group 1328119 May 10 11:50 mth0967.04302009
-rw-rw-rw- 1 user group 1325592 Jun 9 16:36 mth0967.05312009
-rw-rw-rw- 1 user group 1324509 Jul 9 18:23 mth0967.06302009
-rw-rw-rw- 1 user group 87252 Jul 9 16:51 mthretfml0967
-rw-rw-rw- 1 user group 86592 May 10 06:09 mthretfml0967.04302009
-rw-rw-rw- 1 user group 86592 Jun 9 14:54 mthretfml0967.05312009
-rw-rw-rw- 1 user group 87252 Jul 9 16:51 mthretfml0967.06302009
-rw-rw-rw- 1 user group 492 Jul 13 10:43 o967457.old
-rw-rw-rw- 1 user group 106 Jul 1 10:32 o967dcp
sftp> get mth0967.06302009
Disconnected; protocol error (Protocol error: packet too long: 64372.).
Warning: child process (/sys$system/tcpip$ssh_ssh2) exited with code 131.
%TCPIP-E-SSH_FC_ERROR, error in ssh file transfer operation
Any suggestions ?
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тАО07-27-2009 07:39 AM
тАО07-27-2009 07:39 AM
Re: SFTP and large files
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тАО07-27-2009 07:56 AM
тАО07-27-2009 07:56 AM
Re: SFTP and large files
I've successfully tested TCPIP V5.4 ECO7J and V5.6 ECO2M ssh images and ls no longer results in "packet too long" and gets a successful listing.
Wim
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тАО07-27-2009 08:11 AM
тАО07-27-2009 08:11 AM
Re: SFTP and large files
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тАО07-27-2009 08:36 AM
тАО07-27-2009 08:36 AM
Re: SFTP and large files
> obtaining the V5.6 ECO2M images ?
Perhaps:
ftp://ftp.itrc.hp.com/openvms_patches/layered_products/i64/
?
I don't know about the "J" and "M". but there
seems to be "HP TCP/IP Services for OpenVMS
V5.6 Update ECO 4" there.
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тАО07-27-2009 08:43 AM
тАО07-27-2009 08:43 AM
Re: SFTP and large files
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тАО07-28-2009 05:27 AM
тАО07-28-2009 05:27 AM
Re: SFTP and large files
Openvms 8.3 Alpha
TCPIP V5.6 - ECO 3
What we do is convert the file to Stream_LF and that fixed the problem.
Contents of strem_lf.fdl:
SYSTEM
SOURCE OpenVMS
FILE
ORGANIZATION SEQUENTIAL
RECORD
BLOCK_SPAN yes
CARRIAGE_CONTROL carriage_return
FORMAT stream_LF
SIZE 0
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тАО08-05-2009 07:23 AM
тАО08-05-2009 07:23 AM
Re: SFTP and large files
$ MC LANCP SHOW DEVICE/CHAR devname
The questions I would ask include whether the device buffer sizes match (but these are negotiated so SHOULDN'T give trouble) and whether the partner node has jumbo frames enabled.
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тАО08-05-2009 07:28 AM
тАО08-05-2009 07:28 AM
Re: SFTP and large files
What we found was that the server side of the connection is Globalscape's FTP server. This particular version didn't honor the packet size requested from VMS and thus an error occurred.
http://forums.globalscape.com/tm.aspx?m=15249&mpage=1&key=packet%2ctoo%2clongуоШ