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Sissle v 1.4.0.129 (2.8 MB) Mar 23 2011
New website facility, default start and error page.
Multipart upload and more importantly multipart upload recovery after failure, power fail say.
Note: multipart download and recovery is an existing facility.
Explorer NSE fixed for Windows XP, displaying a sibling folder from tree view did not work.
"Sissle Stand Alone" is Sissle operating in its old format as an FTP style program.
The new NSE (NameSpace Extension) requires you to activate one and only
one of "Sissle Explorer" or "Sissle Explorer Minimized" and then
activate Windows Explorer, you will find "Sissle S3" under Computer.
Suite consists of
1. Original FTP style program, left window on PC and right window on S3.
2. Since 2009, Sissle also exists as a Namespace Extension (NSE) to
Windows Explorer. The new NSE requires you to activate one and
only
one of "Sissle Explorer" or "Sissle Explorer Minimized" and then
activate Windows Explorer, you will find "Sissle S3" under Computer.
That is S3 is loaded as a disk in Windows Explorer and transfers occur
in a normal fashion in Windows Explorer's window or windows.
It also allows certain application to open programs directly from S3
and store directly to S3. The phrase 'certain application' means there
are technical requirements of how the application navigates to the file
it wishes to load, it must use standard file browser. The application
must operate on the file navigated to file.ext and not file.ext and
file.ext1 (which has not been selected). This is technically difficult
and even more difficult to know which applications anyone uses. There
is no guarantee that this will work for all applications eg Notepad,
Microsoft Office and Open Office work but Xnview does not and even more
complex VLC will play an avi from S3 but will download it completely
first, possibly with no indication that a download is in progress
(depends on options set). You can ask me in advance for common
applications or just try it.
Repeat, this is difficult, certain words like 'load' are used in an
intuitive manner. For instance Notepad has no idea how to load a file
from S3. Sissle must interact with Notepad and Windows Explorer to
perform the load for Notepad.
Notes:
- Normal upload will convert to multipart upload depending on
'Options' settings under 'Numeric Options'. The entry 'Multipart - Size
before multipart op.' defines in MB when a file should be uploaded as a
multipart operation. 5MB is the minimum size and 5,000,000MB (5TB) is the
maximum.
'Multipart - Part size' is a hint on the size of each part upload in MB
if the size can be used. If it can not, for example this would require
more than 10,000 (the max) number of parts it is ignored, uploading 5GB
requires parts of size 500MB (5TB 5 10**12 /10**4 = 5 10**8 = 500MB). 'Multipart - Timeout' is for future use if needed.
- Multipart upload recovery is specifically designed for use
with Sissle multipart upload. If multipart upload is done with another
tool X then Sissle will perform a recovery but can not be certain of
the MD5 checksum used. As failure in the MD5 checksum is unlikely the
recovery should succeed.
- Windows 7.
By default, Windows 7 does not show the root node of a namespace
extension (the new section of Sissle is a NSE) in the tree view (left side) of Windows Explorer.
Perform the following procedure:
1. In Windows Explorer, press Alt key to display the menu bar. Then select Tools menu --> Folder Options...
2. Check 'Show All Folders' in the General tab.
3. Click OK.
- In Options / Binary Options / "File Time in UTC
wrt Local" shows the creation time as seen on the PC against the
time uploaded to Amazon S3. This option can be useful but the down side
is a decrease of speed of operation (estimate a factor of 100 )
- The Nirvanix cloud system has been added to Sissle. Only
the basic functions, transfers,delete,.., are catered for. I wait for
feedback before I do more work.
Sissle v 1.4.0.128 (2.4 MB) Aug 25 2010
Sissle Stand Alone is Sissle operating in its old format as an FTP style program.
The new NSE (NameSpace Extension) requires you to activate one and only
one of "Sissle Explorer" or "Sissle Explorer Minimized" and then
activate Windows Explorer, you will find "Sissle S3" under Computer.
V 128
This is another bug fix from v 126. The promised information about this fault is now available, more info.
V
126 effected the meta data which effected the true date of the file.
For these effected files I introduced an incorrect default which will
cause v 126 effected files not to download, now fixed.
V 127
Main
A last minute fault from introducing Reduced
Redundancy option interfering with Copy,Move, and Alter MetaData
removed. When the following link is active you will have more info (not yet).
From Windows Explorer Synchronization is implemented.
Both operations "delete bucket" and "delete difficult bucket" are now available in explorer
The Cloudfront dialog now implements the Default root object option
Minor
"Change Storage" added to S3operations menu.
Start up altered for unlicensed users so as to navigate only.
Tidy up on context menu.
Abort on upload improved
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Main New Development v 124
A
bug fix to a fault in v124 and minor corrections to setting ACLs
and altering metadata. This release introduces the Reduced Redundancy
facility. Set under options/options/Bucket Defaults.
Sissle
The improvement in layout of Sissle was suggested by a customer H Strand, StrandControl, LLC, www.homedomination.com
Linkage to the new Sissle NSE module.
Many internal improvements.
An extension to Windows Explorer - Sissle NSE
Activate either "Sissle Explorer Minimized" or "Sissle Explore" then activate "Windows Explorer".
Navigation within Amazon S3 using Windows Explorer.
Drag and Drop
to and from explorer has been completed for Vista / XP / 7 (32 bit and 64 bit).
Advice: Use two Windows Explorers one showing the source folder and the other showing the destination folder.
Try with your own applications opening, using and saving files
directly from Amazon S3. The key word here is try, this is not
guaranteed to work now or in the future. With a certain amount of
luck of how the application has been written, this is possible.
Carefully
try this, for example open a document on Amazon S3 with say "Open
Office" edit, save it. When you click open in the application "Sissle
S3" earth ball will appear under computer for you to navigate to.
Important: Sissle NSE opening and saving files directly on Amazon S3 with applications.
Firstly an explanation of how this is achieved technically which will lead us directly to the main problem.
Sissle NSE is an extension to windows explorer, which is why it will appear in the open dialog.
Applications can not access Amazon S3 directly, so there has to be some trickery *.
Sissle NSE intercepts the "ok" of the "open file" dialog and transfers
the selected file to a temporary folder on disk and then finishes the
open dialog by altering the file location to the file now in the
temporary folder.
Here lies the problem you may stumble over. Next time you use your
application, the "recent files" will show your file in the temporary
folder. This file will exist and most probably be most up to date
version, but when you save this file it will only be written to the
temporary folder not to Amazon S3.
It is important each time you open a file in S3 that you slavishly navigate to it on S3 and please ignore any recent lists.
On save Sissle notices that the file has changed and writes it back to
S3. Application can lock files and this will stop Sissle from doing its
job of writing back to S3. How different applications are written is
impossible to know, therefore there is a certain amount of luck in this
mechanism working.
* I believe some people have written disk drivers for S3 and so making this statement untrue.
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Version 126
Version 126 introduced the reduced redundancy option.
An error in implementation (and a failure of testing ) not only
effected the option itself but Copy (S3 to S3), Move (S3 to S3) and
Alter meta data.
The error leaves the file intact but has deleted the Sissle meta data of files operated on
The Sissle meta data is used
1. To specify the file is zipped, easy to correct.
2. Indicates the file is encrypted, not easy, you must contact me.
3. Holds the UTC (Universal Time C..) for the file. This represents the
time last modified as seen on the PC, the value returned by S3 is the
time uploaded. The UTC is used in the synchronization process.
This is a bit more complicated:
1. If you are using the database for this bucket, you will have no problems.
2. If you are not using the database for this bucket and experience problems you must contact me.
4. Which version of Sissle 1400 - no relevance.
The worst scenarios are for encrypted files, Reduced Redundancy and files that are regularly synchronized.
I would be surprised if anyone has used the encryption as it is overly complex to use (high on my list for simplification).
The Reduced Redundancy is a new option and many people may have tried
this out for interest sake. Note, though of little comfort, the file is
intact and will have the correct storage.
The easiest way to correct this is to upload all files operated on by
Reduced Redundancy
Copy
Move
Rename
Alter Metadata
If your only copy is on S3 then download and upload.
If you have no zipped files, no encrypted files and do not use synchronization, then you can ignore all of this.
To determine if a file is effected.
Use Sissle to inspect its meta data, select file, right click, select
Tools, then Alter Metadata Dialog. If the box second down left marked
Sissle's MetaData - non alterable is empty then it has been effected by
v 126 or you used another program to upload the file.
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