** Description changed:

- Copying large (>10GB) files with rsync -z (compression) leads to a long
- hang and eventual error after transferring part of the file.  The error
- is consistent.  The file copies at normal speed until it reaches its
- maximum size (1.4 GB out of 20 GB for one, 6.9 GB out of 29 GB for
- another).  Then nothing happens for a while (many minutes).  Finally,
- there is an error:
+ [Status]
+ This issue is currently Incomplete.
+ 
+ We're currently blocked on obtaining access to a reliable, and publicly 
+ available dataset that can be shared to reproduce the issue.  The test
+ is critical to being able to evaluate the impact of the change on other
+ users when assessing if the fix can be SRU'ed to trusty.
+ 
+ If you are affected by this bug and can reliably reproduce the issue
+ with a specific dataset that you are willing and permitted to share please
+ comment and specify the dataset location, and how you reproduce the issue.
+ 
+ 
+ [Original Description]
+ Copying large (>10GB) files with rsync -z (compression) leads to a long hang 
and eventual error after transferring part of the file.  The error is 
consistent.  The file copies at normal speed until it reaches its maximum size 
(1.4 GB out of 20 GB for one, 6.9 GB out of 29 GB for another).  Then nothing 
happens for a while (many minutes).  Finally, there is an error:
  
  [....]
  jh/.VirtualBox/win7/win7.vbox
  jh/.VirtualBox/win7/win7.vbox-prev
  jh/.VirtualBox/win7/win7.vdi
  rsync: [sender] write error: Broken pipe (32)
  rsync error: error in rsync protocol data stream (code 12) at io.c(837) 
[sender=3.1.0]
  
  In this case, 6.9 GB of 29 GB transferred.  Without -z, it works.
  
  See the following upstream report, with a comment at the end from the
  rsync maintainer:
  
  https://bugzilla.samba.org/show_bug.cgi?id=10372
  
  According to this report, version 3.1.0 (included in 14.04) uses a
  different compression package from prior versions.  Prior versions did
  not have this problem for me using the same command on the same systems.
  Both hosts ran Ubuntu 11.10 at the time, and all run 14.04 now, in each
  case with all updates applied, Intel hardware.  Network connection
  between them is gigabit ethernet through one switch.  A shell ssh
  between them in a terminal works and stays up during the failure, so it
  is not a network issue.  There are no relevant entries in syslog on
  either machine.  There is sufficient capacity on the receiving disk.
  All filesystems are ext4.
  
  rsync command:
  
  /usr/bin/rsync -aHSxvz --delete --stats --exclude=lost+found
  --exclude=.gvfs --exclude=/nonlaptop /home/
  backup.host.edu:/bu/host/home/
  
  (yes, I changed the machine names)
  
  Current release (both hosts):
  
  Description:  Ubuntu 14.04.1 LTS
  Release:      14.04
  
  Current package (both hosts):
  
  rsync:
-   Installed: 3.1.0-2ubuntu0.1
-   Candidate: 3.1.0-2ubuntu0.1
-   Version table:
-  *** 3.1.0-2ubuntu0.1 0
-         500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 
Packages
-         500 http://security.ubuntu.com/ubuntu/ trusty-security/main amd64 
Packages
-         100 /var/lib/dpkg/status
-      3.1.0-2 0
-         500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
+   Installed: 3.1.0-2ubuntu0.1
+   Candidate: 3.1.0-2ubuntu0.1
+   Version table:
+  *** 3.1.0-2ubuntu0.1 0
+         500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 
Packages
+         500 http://security.ubuntu.com/ubuntu/ trusty-security/main amd64 
Packages
+         100 /var/lib/dpkg/status
+      3.1.0-2 0
+         500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
  
  Thanks,
  
  --jh--

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https://bugs.launchpad.net/bugs/1384503

Title:
  rsync fails on large files with compression

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