Have you tried the version in the trunk?  It should be fixed.


On Mon, Aug 21, 2017 at 4:12 PM, Jeremy Saklad <email address hidden>
wrote:

> The causes of this bug are the hardcoded arguments in the par2 backend.
> Most notably, “-n1” conflicts with any user-specified arguments for “-l”
> or “-n”, and makes it impossible to use split par2 archives. Since par2
> archives are supposed to be used as split archives, minimizing the
> amount of recovery blocks that have to be downloaded to repair a
> problem, this is a major issue.
>
> The arguments are appended onto the hardcoded ones, checking to see if
> any of them conflict with the defaults. I was able to fix all reported
> problems by deleting the hardcoded arguments and supplying my own
> replacements, as a proof-of-concept.
>
> To actually fix this, the --par2-options parameters should be made to
> override the currently hardcoded defaults.
>
> --
> You received this bug notification because you are subscribed to
> Duplicity.
> https://bugs.launchpad.net/bugs/1642098
>
> Title:
>   duplicity does not create PAR2 archives when '--par2-options' is used,
>   and does not warn about failure
>
> Status in Duplicity:
>   Fix Committed
>
> Bug description:
>   Duplicity appears to fail to create any PAR2 archives if the user
>   specifies an option like increasing RAM use to speed PAR2 up; it also
>   appears to fail to warn about it, and exits normally without reporting
>   the non-creation of PAR2 archives.
>
>   ---
>
>   I installed a new version of duplicity today to get PAR2 & Backblaze
>   support, the `ubuntu2` .deb:
>
>       $ uname -a
>       Linux craft 4.2.0-42-generic #49-Ubuntu SMP Tue Jun 28 21:26:26 UTC
> 2016 x86_64 x86_64 x86_64 GNU/Linux
>       $ duplicity --version
>       duplicity 0.7.06
>
>   Successful run with default PAR2 options:
>
>       $ rm /media/gwern/My\ Book/duplicity2/*; duplicity full --use-agent
> --sign-key=CBE7F55C --encrypt-key=CBE7F55C --verbosity=9 --volsize=1000
> /home/gwern/dnm/ par2+file:///media/gwern/My\ Book/duplicity2/ ; par2verify
> /media/gwern/My\ Book/duplicity2/*.par2; ls /media/gwern/My\
> Book/duplicity2/ ; alert
>       Using archive dir: /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787
>       Using backup name: 9c8ed3c601f6078e0c518787b9a8f787
>       Import of duplicity.backends.azurebackend Succeeded
>       Import of duplicity.backends.b2backend Succeeded
>       Import of duplicity.backends.botobackend Succeeded
>       Import of duplicity.backends.cfbackend Succeeded
>       Import of duplicity.backends.copycombackend Succeeded
>       Import of duplicity.backends.dpbxbackend Succeeded
>       Import of duplicity.backends.gdocsbackend Succeeded
>       Import of duplicity.backends.giobackend Succeeded
>       Import of duplicity.backends.hsibackend Succeeded
>       Import of duplicity.backends.hubicbackend Succeeded
>       Import of duplicity.backends.imapbackend Succeeded
>       Import of duplicity.backends.lftpbackend Succeeded
>       Import of duplicity.backends.localbackend Succeeded
>       Import of duplicity.backends.megabackend Succeeded
>       Import of duplicity.backends.multibackend Succeeded
>       Import of duplicity.backends.ncftpbackend Succeeded
>       Import of duplicity.backends.onedrivebackend Succeeded
>       Import of duplicity.backends.par2backend Succeeded
>       Import of duplicity.backends.pydrivebackend Succeeded
>       Import of duplicity.backends.rsyncbackend Succeeded
>       Import of duplicity.backends.ssh_paramiko_backend Succeeded
>       Import of duplicity.backends.ssh_pexpect_backend Succeeded
>       Import of duplicity.backends.swiftbackend Succeeded
>       Import of duplicity.backends.sxbackend Succeeded
>       Import of duplicity.backends.tahoebackend Succeeded
>       Import of duplicity.backends.webdavbackend Succeeded
>       Main action: full
>       ============================================================
> ====================
>       duplicity 0.7.06 (December 07, 2015)
>       Args: /usr/bin/duplicity full --use-agent --sign-key=CBE7F55C
> --encrypt-key=CBE7F55C --verbosity=9 --volsize=1000 /home/gwern/dnm/
> par2+file:///media/gwern/My Book/duplicity2/
>       Linux craft 4.2.0-42-generic #49-Ubuntu SMP Tue Jun 28 21:26:26 UTC
> 2016 x86_64 x86_64
>       /usr/bin/python2 2.7.10 (default, Oct 14 2015, 16:09:02)
>       [GCC 5.2.1 20151010]
>       ============================================================
> ====================
>       Using temporary directory /tmp/duplicity-WrL5Rr-tempdir
>       Registering (mkstemp) temporary file /tmp/duplicity-WrL5Rr-tempdir/
> mkstemp-v2toCa-1
>       Temp has 182325923840 available, backup will use approx 1363148800.
>       Synchronizing remote metadata to local cache...
>       Deleting local /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity-full-signatures.20161116T005517Z.sigtar.gpg
> (not authoritative at backend).
>       Deleting local /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity-full-signatures.20161116T005536Z.sigtar.gz
> (not authoritative at backend).
>       Deleting local /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity-full.20161116T005517Z.manifest
> (not authoritative at backend).
>       Deleting local /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity-full.20161116T005536Z.manifest.gpg
> (not authoritative at backend).
>       0 files exist on backend
>       4 files exist in cache
>       Extracting backup chains from list of files: []
>       Warning, found signatures but no corresponding backup files
>       Last full backup date: none
>       Collection Status
>       -----------------
>       Connecting with backend: BackendWrapper
>       Archive dir: /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787
>
>       Found 0 secondary backup chains.
>       No backup chains with active signatures found
>       No orphaned or incomplete backup sets found.
>       Using temporary directory /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity-DmUq5D-tempdir
>       Registering (mktemp) temporary file /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity-DmUq5D-tempdir/mktemp-br1Phg-1
>       Using temporary directory /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity-5o1Ley-tempdir
>       Registering (mktemp) temporary file /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity-5o1Ley-tempdir/mktemp-hL0cW6-1
>       AsyncScheduler: instantiating at concurrency 0
>       Registering (mktemp) temporary file /tmp/duplicity-WrL5Rr-tempdir/
> mktemp-5cQ1oS-2
>       Selecting /home/gwern/dnm
>       Comparing . and None
>       Getting delta of (. dir) and None
>       A .
>       Selection: examining path /home/gwern/dnm/3-16-cr-00109-SRU
>       Selection:     + no selection functions found. Including
>       Selecting /home/gwern/dnm/3-16-cr-00109-SRU
>       Comparing 3-16-cr-00109-SRU and None
>       Getting delta of (3-16-cr-00109-SRU dir) and None
>       A 3-16-cr-00109-SRU
>       Selection: examining path /home/gwern/dnm/3-16-cr-00109-
> SRU/3-16-cr-00109-SRU-1-1.pdf
>       Selection:     + no selection functions found. Including
>       Selecting /home/gwern/dnm/3-16-cr-00109-
> SRU/3-16-cr-00109-SRU-1-1.pdf
>       Comparing 3-16-cr-00109-SRU/3-16-cr-00109-SRU-1-1.pdf and None
>       Getting delta of (3-16-cr-00109-SRU/3-16-cr-00109-SRU-1-1.pdf reg)
> and None
>       A 3-16-cr-00109-SRU/3-16-cr-00109-SRU-1-1.pdf
>       Selection: examining path /home/gwern/dnm/3-16-cr-00109-
> SRU/3-16-cr-00109-SRU-1-2.pdf
>       Selection:     + no selection functions found. Including
>       Selecting /home/gwern/dnm/3-16-cr-00109-
> SRU/3-16-cr-00109-SRU-1-2.pdf
>       Comparing 3-16-cr-00109-SRU/3-16-cr-00109-SRU-1-2.pdf and None
>       Getting delta of (3-16-cr-00109-SRU/3-16-cr-00109-SRU-1-2.pdf reg)
> and None
>       A 3-16-cr-00109-SRU/3-16-cr-00109-SRU-1-2.pdf
>       Selection: examining path /home/gwern/dnm/3-16-cr-00109-
> SRU/3-16-cr-00109-SRU-1-3.pdf
>       Selection:     + no selection functions found. Including
>       Selecting /home/gwern/dnm/3-16-cr-00109-
> SRU/3-16-cr-00109-SRU-1-3.pdf
>       Comparing 3-16-cr-00109-SRU/3-16-cr-00109-SRU-1-3.pdf and None
>       Getting delta of (3-16-cr-00109-SRU/3-16-cr-00109-SRU-1-3.pdf reg)
> and None
>       A 3-16-cr-00109-SRU/3-16-cr-00109-SRU-1-3.pdf
>       Selection: examining path /home/gwern/dnm/3-16-cr-00109-
> SRU/3-16-cr-00109-SRU-1-main.pdf
>       Selection:     + no selection functions found. Including
>       Selecting /home/gwern/dnm/3-16-cr-00109-
> SRU/3-16-cr-00109-SRU-1-main.pdf
>       Comparing 3-16-cr-00109-SRU/3-16-cr-00109-SRU-1-main.pdf and None
>       Getting delta of (3-16-cr-00109-SRU/3-16-cr-00109-SRU-1-main.pdf
> reg) and None
>       A 3-16-cr-00109-SRU/3-16-cr-00109-SRU-1-main.pdf
>       Selection: examining path /home/gwern/dnm/3-16-cr-00109-SRU.zip
>       Selection:     + no selection functions found. Including
>       Selecting /home/gwern/dnm/3-16-cr-00109-SRU.zip
>       Comparing 3-16-cr-00109-SRU.zip and None
>       Getting delta of (3-16-cr-00109-SRU.zip reg) and None
>       A 3-16-cr-00109-SRU.zip
>       Removing still remembered temporary file
> /home/gwern/.cache/duplicity/9c8ed3c601f6078e0c518787b9a8f7
> 87/duplicity-DmUq5D-tempdir/mktemp-br1Phg-1
>       Removing still remembered temporary file
> /home/gwern/.cache/duplicity/9c8ed3c601f6078e0c518787b9a8f7
> 87/duplicity-5o1Ley-tempdir/mktemp-hL0cW6-1
>       AsyncScheduler: running task synchronously (asynchronicity disabled)
>       Writing duplicity-full.20161116T005642Z.vol1.difftar.gpg
>       Making directory /tmp/duplicity-WrL5Rr-tempdir/duplicity_temp.1
>       Create Par2 recovery files
>       Deleting /tmp/duplicity-WrL5Rr-tempdir/duplicity_temp.1/duplicity-
> full.20161116T005642Z.vol1.difftar.gpg
>       Deleting tree /tmp/duplicity-WrL5Rr-tempdir/duplicity_temp.1
>       Selecting /tmp/duplicity-WrL5Rr-tempdir/duplicity_temp.1
>       Selection: examining path /tmp/duplicity-WrL5Rr-tempdir/
> duplicity_temp.1/duplicity-full.20161116T005642Z.vol1.difftar.gpg.par2
>       Selection:     + no selection functions found. Including
>       Selecting /tmp/duplicity-WrL5Rr-tempdir/duplicity_temp.1/duplicity-
> full.20161116T005642Z.vol1.difftar.gpg.par2
>       Deleting /tmp/duplicity-WrL5Rr-tempdir/duplicity_temp.1/duplicity-
> full.20161116T005642Z.vol1.difftar.gpg.par2
>       Selection: examining path /tmp/duplicity-WrL5Rr-tempdir/
> duplicity_temp.1/duplicity-full.20161116T005642Z.vol1.
> difftar.gpg.vol000+200.par2
>       Selection:     + no selection functions found. Including
>       Selecting /tmp/duplicity-WrL5Rr-tempdir/duplicity_temp.1/duplicity-
> full.20161116T005642Z.vol1.difftar.gpg.vol000+200.par2
>       Deleting /tmp/duplicity-WrL5Rr-tempdir/duplicity_temp.1/duplicity-
> full.20161116T005642Z.vol1.difftar.gpg.vol000+200.par2
>       Deleting /tmp/duplicity-WrL5Rr-tempdir/duplicity_temp.1
>       Deleting /tmp/duplicity-WrL5Rr-tempdir/mktemp-5cQ1oS-2
>       Forgetting temporary file /tmp/duplicity-WrL5Rr-tempdir/
> mktemp-5cQ1oS-2
>       AsyncScheduler: task completed successfully
>       Processed volume 1
>       Making directory /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity_temp.1
>       Create Par2 recovery files
>       Deleting /home/gwern/.cache/duplicity/9c8ed3c601f6078e0c518787b9a8f7
> 87/duplicity_temp.1/duplicity-full-signatures.20161116T005642Z.sigtar.gpg
>       Deleting tree /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity_temp.1
>       Selecting /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity_temp.1
>       Selection: examining path /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity_temp.1/duplicity-
> full-signatures.20161116T005642Z.sigtar.gpg.par2
>       Selection:     + no selection functions found. Including
>       Selecting /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity_temp.1/duplicity-
> full-signatures.20161116T005642Z.sigtar.gpg.par2
>       Deleting /home/gwern/.cache/duplicity/9c8ed3c601f6078e0c518787b9a8f7
> 87/duplicity_temp.1/duplicity-full-signatures.20161116T005642Z.sigtar.gpg.
> par2
>       Selection: examining path /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity_temp.1/duplicity-
> full-signatures.20161116T005642Z.sigtar.gpg.vol000+190.par2
>       Selection:     + no selection functions found. Including
>       Selecting /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity_temp.1/duplicity-
> full-signatures.20161116T005642Z.sigtar.gpg.vol000+190.par2
>       Deleting /home/gwern/.cache/duplicity/9c8ed3c601f6078e0c518787b9a8f7
> 87/duplicity_temp.1/duplicity-full-signatures.20161116T005642Z.sigtar.gpg.
> vol000+190.par2
>       Deleting /home/gwern/.cache/duplicity/9c8ed3c601f6078e0c518787b9a8f7
> 87/duplicity_temp.1
>       Making directory /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity_temp.1
>       Create Par2 recovery files
>       Deleting /home/gwern/.cache/duplicity/9c8ed3c601f6078e0c518787b9a8f7
> 87/duplicity_temp.1/duplicity-full.20161116T005642Z.manifest.gpg
>       Deleting tree /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity_temp.1
>       Selecting /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity_temp.1
>       Selection: examining path /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity_temp.1/duplicity-
> full.20161116T005642Z.manifest.gpg.par2
>       Selection:     + no selection functions found. Including
>       Selecting /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity_temp.1/duplicity-
> full.20161116T005642Z.manifest.gpg.par2
>       Deleting /home/gwern/.cache/duplicity/9c8ed3c601f6078e0c518787b9a8f7
> 87/duplicity_temp.1/duplicity-full.20161116T005642Z.manifest.gpg.par2
>       Selection: examining path /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity_temp.1/duplicity-
> full.20161116T005642Z.manifest.gpg.vol00+34.par2
>       Selection:     + no selection functions found. Including
>       Selecting /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity_temp.1/duplicity-
> full.20161116T005642Z.manifest.gpg.vol00+34.par2
>       Deleting /home/gwern/.cache/duplicity/9c8ed3c601f6078e0c518787b9a8f7
> 87/duplicity_temp.1/duplicity-full.20161116T005642Z.
> manifest.gpg.vol00+34.par2
>       Deleting /home/gwern/.cache/duplicity/9c8ed3c601f6078e0c518787b9a8f7
> 87/duplicity_temp.1
>       1 file exists on backend
>       8 files exist in cache
>       Extracting backup chains from list of files: [u'duplicity-full.
> 20161116T005642Z.vol1.difftar.gpg']
>       File duplicity-full.20161116T005642Z.vol1.difftar.gpg is not part
> of a known set; creating new set
>       Warning, found incomplete backup sets, probably left from aborted
> session
>       --------------[ Backup Statistics ]--------------
>       StartTime 1479257802.19 (Tue Nov 15 19:56:42 2016)
>       EndTime 1479257802.76 (Tue Nov 15 19:56:42 2016)
>       ElapsedTime 0.57 (0.57 seconds)
>       SourceFiles 7
>       SourceFileSize 11078834 (10.6 MB)
>       NewFiles 7
>       NewFileSize 11078834 (10.6 MB)
>       DeletedFiles 0
>       ChangedFiles 0
>       ChangedFileSize 0 (0 bytes)
>       ChangedDeltaSize 0 (0 bytes)
>       DeltaEntries 7
>       RawDeltaSize 11070642 (10.6 MB)
>       TotalDestinationSizeChange 8573459 (8.18 MB)
>       Errors 0
>       -------------------------------------------------
>
>       Releasing lockfile /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/lockfile.lock
>       Removing still remembered temporary file
> /tmp/duplicity-WrL5Rr-tempdir/mkstemp-v2toCa-1
>       Loading "duplicity-full.20161116T005642Z.vol1.difftar.gpg.par2".
>       Loaded 4 new packets
>       Loading "duplicity-full.20161116T005642Z.vol1.difftar.
> gpg.vol000+200.par2".
>       Loaded 200 new packets including 200 recovery blocks
>
>       There are 1 recoverable files and 0 other files.
>       The block size used was 4288 bytes.
>       There are a total of 2000 data blocks.
>       The total size of the data files is 8573459 bytes.
>
>       Verifying source files:
>
>       Target: "duplicity-full.20161116T005642Z.vol1.difftar.gpg" - found.
>
>       All files are correct, repair is not required.
>       duplicity-full.20161116T005642Z.vol1.difftar.gpg
>       duplicity-full.20161116T005642Z.vol1.difftar.gpg.par2
>       duplicity-full.20161116T005642Z.vol1.difftar.gpg.vol000+200.par2
>
>   Should I try tweaking the redundancy, it works fine with
>   `--par2-redundancy 5` etc. So that particular PAR2 Duplicity option is
>   working.
>
>   It always fails when I ask Duplicity to pass onto PAR2 an option, the
>   -m option which increases RAM use by PAR2:
>
>          -m<n>  Memory (in MB) to use
>
>   Due to the space-time tradeoff, PAR2 runs *much* faster (as in,
>   several times faster) if you give it a more reasonable amount of RAM
>   commensurate with modern standards, like 2GB. I always use it because
>   it makes such a difference and I always have a few GB of RAM to spare.
>   (It might not be a bad idea at all to have duplicity call PAR2 with a
>   changed default....) However when I try:
>
>       $ rm /media/gwern/My\ Book/duplicity2/*; duplicity full --use-agent
> --sign-key=CBE7F55C --encrypt-key=CBE7F55C --verbosity=9 --volsize=1000
> --par2-options -m2000 /home/gwern/dnm/ par2+file:///media/gwern/My\
> Book/duplicity2/ ; par2verify /media/gwern/My\ Book/duplicity2/*.par2; ls
> /media/gwern/My\ Book/duplicity2/ ; alert
>       Using archive dir: /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787
>       Using backup name: 9c8ed3c601f6078e0c518787b9a8f787
>       Import of duplicity.backends.azurebackend Succeeded
>       Import of duplicity.backends.b2backend Succeeded
>       Import of duplicity.backends.botobackend Succeeded
>       Import of duplicity.backends.cfbackend Succeeded
>       Import of duplicity.backends.copycombackend Succeeded
>       Import of duplicity.backends.dpbxbackend Succeeded
>       Import of duplicity.backends.gdocsbackend Succeeded
>       Import of duplicity.backends.giobackend Succeeded
>       Import of duplicity.backends.hsibackend Succeeded
>       Import of duplicity.backends.hubicbackend Succeeded
>       Import of duplicity.backends.imapbackend Succeeded
>       Import of duplicity.backends.lftpbackend Succeeded
>       Import of duplicity.backends.localbackend Succeeded
>       Import of duplicity.backends.megabackend Succeeded
>       Import of duplicity.backends.multibackend Succeeded
>       Import of duplicity.backends.ncftpbackend Succeeded
>       Import of duplicity.backends.onedrivebackend Succeeded
>       Import of duplicity.backends.par2backend Succeeded
>       Import of duplicity.backends.pydrivebackend Succeeded
>       Import of duplicity.backends.rsyncbackend Succeeded
>       Import of duplicity.backends.ssh_paramiko_backend Succeeded
>       Import of duplicity.backends.ssh_pexpect_backend Succeeded
>       Import of duplicity.backends.swiftbackend Succeeded
>       Import of duplicity.backends.sxbackend Succeeded
>       Import of duplicity.backends.tahoebackend Succeeded
>       Import of duplicity.backends.webdavbackend Succeeded
>       Main action: full
>       ============================================================
> ====================
>       duplicity 0.7.06 (December 07, 2015)
>       Args: /usr/bin/duplicity full --use-agent --sign-key=CBE7F55C
> --encrypt-key=CBE7F55C --verbosity=9 --volsize=1000 --par2-options -m2000
> /home/gwern/dnm/ par2+file:///media/gwern/My Book/duplicity2/
>       Linux craft 4.2.0-42-generic #49-Ubuntu SMP Tue Jun 28 21:26:26 UTC
> 2016 x86_64 x86_64
>       /usr/bin/python2 2.7.10 (default, Oct 14 2015, 16:09:02)
>       [GCC 5.2.1 20151010]
>       ============================================================
> ====================
>       Using temporary directory /tmp/duplicity-2Y7f4X-tempdir
>       Registering (mkstemp) temporary file /tmp/duplicity-2Y7f4X-tempdir/
> mkstemp-vrrmsY-1
>       Temp has 182325932032 available, backup will use approx 1363148800.
>       Synchronizing remote metadata to local cache...
>       Deleting local /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity-full-signatures.20161116T005319Z.sigtar.gz
> (not authoritative at backend).
>       Deleting local /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity-full-signatures.20161116T005333Z.sigtar.gpg
> (not authoritative at backend).
>       Deleting local /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity-full.20161116T005319Z.manifest
> (not authoritative at backend).
>       Deleting local /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity-full.20161116T005333Z.manifest.gpg
> (not authoritative at backend).
>       0 files exist on backend
>       4 files exist in cache
>       Extracting backup chains from list of files: []
>       Warning, found signatures but no corresponding backup files
>       Last full backup date: none
>       Collection Status
>       -----------------
>       Connecting with backend: BackendWrapper
>       Archive dir: /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787
>
>       Found 0 secondary backup chains.
>       No backup chains with active signatures found
>       No orphaned or incomplete backup sets found.
>       Using temporary directory /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity-IfAgkn-tempdir
>       Registering (mktemp) temporary file /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity-IfAgkn-tempdir/mktemp-Wrj8tw-1
>       Using temporary directory /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity-uvnjxK-tempdir
>       Registering (mktemp) temporary file /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity-uvnjxK-tempdir/mktemp-yXdi3o-1
>       AsyncScheduler: instantiating at concurrency 0
>       Registering (mktemp) temporary file /tmp/duplicity-2Y7f4X-tempdir/
> mktemp-B2yYEE-2
>       Selecting /home/gwern/dnm
>       Comparing . and None
>       Getting delta of (. dir) and None
>       A .
>       Selection: examining path /home/gwern/dnm/3-16-cr-00109-SRU
>       Selection:     + no selection functions found. Including
>       Selecting /home/gwern/dnm/3-16-cr-00109-SRU
>       Comparing 3-16-cr-00109-SRU and None
>       Getting delta of (3-16-cr-00109-SRU dir) and None
>       A 3-16-cr-00109-SRU
>       Selection: examining path /home/gwern/dnm/3-16-cr-00109-
> SRU/3-16-cr-00109-SRU-1-1.pdf
>       Selection:     + no selection functions found. Including
>       Selecting /home/gwern/dnm/3-16-cr-00109-
> SRU/3-16-cr-00109-SRU-1-1.pdf
>       Comparing 3-16-cr-00109-SRU/3-16-cr-00109-SRU-1-1.pdf and None
>       Getting delta of (3-16-cr-00109-SRU/3-16-cr-00109-SRU-1-1.pdf reg)
> and None
>       A 3-16-cr-00109-SRU/3-16-cr-00109-SRU-1-1.pdf
>       Selection: examining path /home/gwern/dnm/3-16-cr-00109-
> SRU/3-16-cr-00109-SRU-1-2.pdf
>       Selection:     + no selection functions found. Including
>       Selecting /home/gwern/dnm/3-16-cr-00109-
> SRU/3-16-cr-00109-SRU-1-2.pdf
>       Comparing 3-16-cr-00109-SRU/3-16-cr-00109-SRU-1-2.pdf and None
>       Getting delta of (3-16-cr-00109-SRU/3-16-cr-00109-SRU-1-2.pdf reg)
> and None
>       A 3-16-cr-00109-SRU/3-16-cr-00109-SRU-1-2.pdf
>       Selection: examining path /home/gwern/dnm/3-16-cr-00109-
> SRU/3-16-cr-00109-SRU-1-3.pdf
>       Selection:     + no selection functions found. Including
>       Selecting /home/gwern/dnm/3-16-cr-00109-
> SRU/3-16-cr-00109-SRU-1-3.pdf
>       Comparing 3-16-cr-00109-SRU/3-16-cr-00109-SRU-1-3.pdf and None
>       Getting delta of (3-16-cr-00109-SRU/3-16-cr-00109-SRU-1-3.pdf reg)
> and None
>       A 3-16-cr-00109-SRU/3-16-cr-00109-SRU-1-3.pdf
>       Selection: examining path /home/gwern/dnm/3-16-cr-00109-
> SRU/3-16-cr-00109-SRU-1-main.pdf
>       Selection:     + no selection functions found. Including
>       Selecting /home/gwern/dnm/3-16-cr-00109-
> SRU/3-16-cr-00109-SRU-1-main.pdf
>       Comparing 3-16-cr-00109-SRU/3-16-cr-00109-SRU-1-main.pdf and None
>       Getting delta of (3-16-cr-00109-SRU/3-16-cr-00109-SRU-1-main.pdf
> reg) and None
>       A 3-16-cr-00109-SRU/3-16-cr-00109-SRU-1-main.pdf
>       Selection: examining path /home/gwern/dnm/3-16-cr-00109-SRU.zip
>       Selection:     + no selection functions found. Including
>       Selecting /home/gwern/dnm/3-16-cr-00109-SRU.zip
>       Comparing 3-16-cr-00109-SRU.zip and None
>       Getting delta of (3-16-cr-00109-SRU.zip reg) and None
>       A 3-16-cr-00109-SRU.zip
>       Removing still remembered temporary file
> /home/gwern/.cache/duplicity/9c8ed3c601f6078e0c518787b9a8f7
> 87/duplicity-IfAgkn-tempdir/mktemp-Wrj8tw-1
>       Removing still remembered temporary file
> /home/gwern/.cache/duplicity/9c8ed3c601f6078e0c518787b9a8f7
> 87/duplicity-uvnjxK-tempdir/mktemp-yXdi3o-1
>       AsyncScheduler: running task synchronously (asynchronicity disabled)
>       Writing duplicity-full.20161116T005401Z.vol1.difftar.gpg
>       Making directory /tmp/duplicity-2Y7f4X-tempdir/duplicity_temp.1
>       Create Par2 recovery files
>       Deleting /tmp/duplicity-2Y7f4X-tempdir/duplicity_temp.1/duplicity-
> full.20161116T005401Z.vol1.difftar.gpg
>       Deleting tree /tmp/duplicity-2Y7f4X-tempdir/duplicity_temp.1
>       Selecting /tmp/duplicity-2Y7f4X-tempdir/duplicity_temp.1
>       Deleting /tmp/duplicity-2Y7f4X-tempdir/duplicity_temp.1
>       Deleting /tmp/duplicity-2Y7f4X-tempdir/mktemp-B2yYEE-2
>       Forgetting temporary file /tmp/duplicity-2Y7f4X-tempdir/
> mktemp-B2yYEE-2
>       AsyncScheduler: task completed successfully
>       Processed volume 1
>       Making directory /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity_temp.1
>       Create Par2 recovery files
>       Deleting /home/gwern/.cache/duplicity/9c8ed3c601f6078e0c518787b9a8f7
> 87/duplicity_temp.1/duplicity-full-signatures.20161116T005401Z.sigtar.gpg
>       Deleting tree /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity_temp.1
>       Selecting /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity_temp.1
>       Deleting /home/gwern/.cache/duplicity/9c8ed3c601f6078e0c518787b9a8f7
> 87/duplicity_temp.1
>       Making directory /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity_temp.1
>       Create Par2 recovery files
>       Deleting /home/gwern/.cache/duplicity/9c8ed3c601f6078e0c518787b9a8f7
> 87/duplicity_temp.1/duplicity-full.20161116T005401Z.manifest.gpg
>       Deleting tree /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity_temp.1
>       Selecting /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/duplicity_temp.1
>       Deleting /home/gwern/.cache/duplicity/9c8ed3c601f6078e0c518787b9a8f7
> 87/duplicity_temp.1
>       1 file exists on backend
>       8 files exist in cache
>       Extracting backup chains from list of files: [u'duplicity-full.
> 20161116T005401Z.vol1.difftar.gpg']
>       File duplicity-full.20161116T005401Z.vol1.difftar.gpg is not part
> of a known set; creating new set
>       Warning, found incomplete backup sets, probably left from aborted
> session
>       --------------[ Backup Statistics ]--------------
>       StartTime 1479257641.59 (Tue Nov 15 19:54:01 2016)
>       EndTime 1479257642.18 (Tue Nov 15 19:54:02 2016)
>       ElapsedTime 0.59 (0.59 seconds)
>       SourceFiles 7
>       SourceFileSize 11078834 (10.6 MB)
>       NewFiles 7
>       NewFileSize 11078834 (10.6 MB)
>       DeletedFiles 0
>       ChangedFiles 0
>       ChangedFileSize 0 (0 bytes)
>       ChangedDeltaSize 0 (0 bytes)
>       DeltaEntries 7
>       RawDeltaSize 11070642 (10.6 MB)
>       TotalDestinationSizeChange 8573460 (8.18 MB)
>       Errors 0
>       -------------------------------------------------
>
>       Releasing lockfile /home/gwern/.cache/duplicity/
> 9c8ed3c601f6078e0c518787b9a8f787/lockfile.lock
>       Removing still remembered temporary file
> /tmp/duplicity-2Y7f4X-tempdir/mkstemp-vrrmsY-1
>       par2 file must not have a wildcard in it.
>       duplicity-full.20161116T005401Z.vol1.difftar.gpg
>
>   All variants I tried failed:
>
>   --par2-options "m2000"
>   --par2-options "-m2000"
>   --par2-options=-m2000
>   --par2-options=m2000
>   --par2-options m2000
>   --par2-options -m2000
>
>   Further, duplicity appears to be oblivious to the PAR2 errors or to
>   not be running par2 at all (even debug-level output is unclear on what
>   it's actually doing, as it merely says "Create Par2 recovery files"
>   and continues normally).
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/duplicity/+bug/1642098/+subscriptions
>