Ceph

description¶

1. Create an empty striper object:
   

   ~# echo 123 | rados --striper -p sata put test -
   ~# rados --striper -p sata truncate test 0
   ~# rados --striper -p sata stat test 
   sata/test mtime 2017-06-16 02:31:42.000000, size 0
   

   
   Note: You cannot write empty object straight into libradosstriper, because it's causes an assertion failure. This issue is fixed in commit 7cce1e8c51640f466d8bb37a21c0d5f1b00db8ab which is not currently a part of jewel release.
2. Try to remove striped object:
   

   ~# rados --striper -p sata rm test 
   ~# echo $?
   0
   

3. Check that object is still present:
   

   ~# rados -p sata ls 
   test.0000000000000000
   ~# rados --striper -p sata ls 
   test
   

Expected result:
Striped object is deleted

It seems that stripe math in "libradosstriper::RadosStriperImpl::remove()" is missing corner case of an empty object, so I'm attaching a simple patch to fix this.

Also this issue is probably fixed in commit 7a50ea479e7e5c2909d899d89d33d3fb082257f8, which is not part of the jewel release and pretty massive to backport.

Clarifying whether tests need to be added.

The question of tests was answered in the PR.