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pete4abw / lrzip-next

Long Range Zip. Updated and Enhanced version of ckolivas' lrzip project. Lots of new features. Better compression. Actively maintained.
https://github.com/pete4abw/lrzip-next
GNU General Public License v2.0
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From lrzip: lrzip 0.631 occasionally hangs forever #141

Closed pete4abw closed 1 year ago

pete4abw commented 1 year ago

This issue, from lrzip, needs more info and some help to review.

The major, important difference wrt this reported bug, is that lrzip-next uses a much newer SDK for zpaq.

Anyone who investigates, please do not use any shortcuts. Just use lrzip-next -vv [options] and not use lrzncat, lrznunzip. Also for testing purposes, don't decompress. Use lrzip-next -vvt file. It is important to use -vv and capture all output.

@ArrayBolt3 , since you are the latest reporter, try your issue here.

Thank you.

ArrayBolt3 commented 1 year ago

Cannot reproduce issue with lrzip-next. I compressed, then tested, the same large file I reproduced the issue with on standard lrzip, and everything appears to work.

log: lrzip-next-log.txt

(originally I had the log inline but it made a giant long comment

pete4abw commented 1 year ago

Cannot reproduce issue with lrzip-next. I compressed, then tested, the same large file I reproduced the issue with on standard lrzip, and everything appears to work.

log: lrzip-next-log.txt

(originally I had the log inline but it made a giant long comment

Yes, it was a long reply, @ArrayBolt3 :-)! But a useful one. I am sure it won't make a difference, BUT may I ask that you do try and decompress the file now? I know it's a pain and 2 hrs+, but maybe you can do overnight? Use -O dirname to redirect the output to another directory so it does not affect your compressed file.

e.g. lrzip-next -vvd -O /tmp Compaq_Presario_CQ57_Factory_Reset_Disk.img

lrzip-next, aside from being a significant enhancement to lrzip, also has new compression methods added, including bzip3 and zstd and many new options. I hope you'll give it a try and help with feedback.

Thank you again for your support and helping review this issue.

ArrayBolt3 commented 1 year ago

It's no problem at all, since lrzip uses a high nice value. I can just leave it on in the background :)

Decompression is underway now. Thanks for the work you do making this software!

ArrayBolt3 commented 1 year ago

lrzip-next-decompress-log.txt

Decompression was successful, and cmp indicates that the file was accurately decompressed.

pete4abw commented 1 year ago

lrzip-next-decompress-log.txt

Decompression was successful, and cmp indicates that the file was accurately decompressed.

Well, thank you for your effort. I can only assume that a) the SDK used in lrzip-next for zpaq (7.15) solved the issue, or b) other enhancements I have made since I forked off in 2019 solved the issue. I have made numerous enhancements. And sadly, the maintainer of zpaq, Matt Mahoney has retired and no enhancements have been made since 2016.

I'm going to close this since for lrzip-next, this is not an issue. I can't help with lrzip since it's so out of date with current SDKs of both lzma and zpaq.