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yum-presto behaviour on arm



Hi -

Is yum-presto known to work on arm? Today I changed our repo to use deltarpms and tested it out. I noticed...

1) On a package where I know the bulk of the unpacked data is some fonts inside an ELF executable that didn't change, the compression result was... not good

  Old RPM:  25424385 txtr-reader-0.1-417.fc11.armv5tel.rpm
  New RPM:  25465487 txtr-reader-0.1-420.fc11.armv5tel.rpm
Delta RPM:  25465402 txtr-reader-0.1-417.fc11_0.1-420.fc11.armv5tel.drpm

So it saved me 85 bytes from 25MByte :-)

The actual procedure here is the createrepo is run on an x86_64 box over these arm packages and then rsync'd on a server.

2) Using deltarpms fails

Loaded plugins: presto
Setting up Update Process
Resolving Dependencies
There are unfinished transactions remaining. You might consider running yum-complete-transaction first to finish them.
--> Running transaction check
---> Package txtr-reader.armv5tel 0:0.1-420.fc11 set to be updated
--> Finished Dependency Resolution

Dependencies Resolved

================================================================================
Package Arch Version Repository Size
================================================================================
Updating:
txtr-reader armv5tel 0.1-420.fc11 txtradevel 24 M

Transaction Summary
================================================================================
Install      0 Package(s)
Update       1 Package(s)
Remove       0 Package(s)

Total download size: 24 M
Downloading Packages:
Setting up and reading Presto delta metadata
Downloading DeltaRPMs:
Rebuilding rpms from deltarpms
/var/cache/yum/txtradevel/deltas/txtr-reader-0.1-417.fc11_0.1-420.fc11.armv5tel.drpm: md5 mismatch of result Error rebuilding rpm from txtr-reader-0.1-417.fc11_0.1-420.fc11.armv5tel.drpm! Will download full package.
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
Updating : txtr-reader 1/2 Cleanup : txtr-reader 2/2

Updated:
txtr-reader.armv5tel 0:0.1-420.fc11

Complete!

Any advice welcomed, it would be great to reduce this 25MByte package down since the vast bulk of it is exactly the same each time :-)

-Andy


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