I recently upgraded a host from Red Hat Enterprise Linux 4 to Red Hat 
Enterprise Linux 6. Since then, BackupPC backups have not been working.

I'm using rsync over ssh. I commented out 'Defaults requiretty' from 
visudo on the upgraded host and added '-tt' flags to the ssh command to 
get rid of error messages about lack of a tty. Now, when I start a full 
backup, the backup begins to run, but 20 hours later, it's still running 
until it exits with the message: "Aborting backup up after signal ALRM." 
This looks like a timeout. Full backups of this host used to take less 
than four hours.

When I look in the last bad XferLog, I see the following:

full backup started for directory / (baseline backup #433)
Running: /usr/bin/ssh -tt -q -x -l backuppc myhostname sudo /usr/bin/rsync 
--server --sender --numeric-ids --perms --owner --group -D --links --hard-links 
--times --block-size=2048 --recursive --one-file-system --ignore-times . /
Xfer PIDs are now 15493
Got remote protocol 1701274484
Fatal error (bad version): tcgetattr: Invalid argument

Sent exclude: /proc
Sent exclude: /tmp
Sent exclude: /wavearchive*
Remote[66]: nvalid argument

followed by a very long list of symbols and characters that probably indicate 
files being backed up, such as:

�I�O�

.�VcOmAmnt�K�A
lost+found@ْ_O�AnetC�`O�Amedia�Kdevyk�Oboot�x`OmA
.autorelabel<�`O��srv�K�Aopt;iO       
.autofsck<�`O��etc0jO�Abackup1+[jO�Ausr��iO�Asys�`Ohome�KcgroupO�=Lsbin0:>tOmAmiscC�`O�AvarM�`Oselinux�o`Oroot��OhAwww
    
rcO�Abin:>tOmAlib08>tOopt/sun;iO�A:/javadbоiO8/register.htmlC4(��J��8demoξiO�A:ocsϾiO:javadocѾiO8LICENSE^,%��J���
index.html��RELEASE-NOTES.html,V�NOTICE%�3RDPARTY�+8bin;iO�A:libξiO8demo/README.txtZ1��J��8
   templatesξiO�A�       
databases�programs8templates/server.policy�3��J��:databases/toursdb.jar��4��J8%ξiO�A�%/log8&service.propertiesu4��J��8(g0ξiO�A8&log/logmirror.ctrl03��J���-.ctrl0�-1.dat�&
seg0/c90.dat`�,311.dat �,150.dat �,371.dat �,1f1.dat �,31.dat@�,161.dat 
�,251.dat@�,1b1.dat@�,2c1.dat �,101.dat �,3b1.dat �,a1.dat`�,111.dat 
�,461.dat �,20.datp�-41.dat �,51.dat@�,4c0.dat��,230.dat@�,1d1.dat 
�,4d1.dat��,361.dat �-40.dat :,b1.dat 4��J:,331.dat 3��J�,260.dat 
�,3a1.dat �,41.dat@�,200.dat �-d0.dat �,420.dat0�,130.dat �,211.dat 
�,10.dat �,3c0.dat �-00.dat �,1a1.dat :,f0.dat 
4��J:,180.dat�3��J�,221.dat �,411.dat �,510.dat �,121.dat :,c0.dat 
4��J:,281.dat 3��J�,450.dat0�,501.dat �,2a1.dat �,4f0.dat
�,1c0.dat 
�,290.dat �,480.dat
�,81.dat �,1e0.dat �,400.dat �,191.dat@�,2e1.dat 
�,3e1.dat �,4a1.datp�,141.dat �,380.dat �,271.dat �,391.dat �-51.dat 
�,491.datp�-e1.dat�:,e1.dat 4��J:,321.dat 3��J�,2f0.dat �,441.dat 
�,71.dat �,4b1.dat��,3d1.dat �,431.dat :,d1.dat 4��J:,171.dat 
3��J�,2b1.dat �,60.dat �,3f1.dat �,471.dat 8programs/vtisξiO�A�
simplemobile8      demo.html"3��J���
csfull.cssV58localcalξiO�A8derbylogo128_bluebg.png�3��J��8toursdbξiO�A�
nserverdemo�scores8navbar.html�3��J���
readme.html�8workingwithderbyξiO�A�simple8
vtis/README�2��J��8"javaξiO�A�"data�"sql�"java/org�*/apache�1
/derbyDemo�;/vtis�@/core�Asnapshot�Aexample8Acore/VTIHelper.java82��J���FFlatFileVTI.javaM�F
XmlVTI.java�.�FVTITemplate.javaC|�FQueryRow.java��KVTIHelper.java5�F
XMLRow.javau�FStringColumnVTI.javaa@�A#snapshot/SubscriptionSignature.javaN�KnapshotQuery.java|�Kubscription.java�T�Aexample/VTIs.java��IDerbyJiraReportVTI.java�
�IWorldDBSnapshot.java��IApacheServerLogVTI.javat�ISubversionLogVTI.java� 
�ILineListVTI.java"�IPropertyFileVTI.java��"data/DerbyJiraReport.xml�
�'
svn_log.txt�t

Could somebody help figure out what's going on here?

Thanks,
Shang-Lin

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