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Issue #7445

Updated by ipanova@redhat.com about 4 years ago

Imagine you have pulp2 and some data( in this case i had only ISO content), then pulp3 gets installed. 
 Write permission for the pulp group is granted and sticky bit is set [0] set. Issue comes when new content gets synced into pulp2( in this case I synced an rpm repo) .Pulp2 overrides permissions, this makes is impossible to create a hardlink 

 ``` 
 $    ll /var/lib/pulp/content/units/ 
 total 12 
 drwxrwsr-x. 173 apache pulp 4096 Sep    2 08:34 iso      <------------------      existing content by the time pulp3 installed 
 drwxr-sr-x.    12 apache pulp    106 Sep    2 08:35 modulemd    <----------------------     new content after pulp3 installed 
 drwxr-sr-x.     5 apache pulp     36 Sep    2 08:35 modulemd_defaults 
 drwxr-sr-x.    35 apache pulp 4096 Sep    2 08:35 rpm 
 (pulp) [vagrant@pulp2-nightly-pulp3-source-centos7 ~ 

 $    ll /var/lib/pulp/content/units/modulemd 
 total 0 
 drwxr-sr-x. 2 apache pulp 76 Sep    2 08:35 00 
 drwxr-sr-x. 2 apache pulp 76 Sep    2 08:35 04 
 drwxr-sr-x. 2 apache pulp 76 Sep    2 08:35 1b 
 drwxr-sr-x. 2 apache pulp 76 Sep    2 08:35 41 
 drwxr-sr-x. 2 apache pulp 76 Sep    2 08:35 66 
 drwxr-sr-x. 2 apache pulp 76 Sep    2 08:35 78 
 drwxr-sr-x. 2 apache pulp 76 Sep    2 08:35 8a 
 drwxr-sr-x. 2 apache pulp 76 Sep    2 08:35 90 
 drwxr-sr-x. 2 apache pulp 76 Sep    2 08:35 a8 
 drwxr-sr-x. 2 apache pulp 76 Sep    2 08:35 ea 


 Then i synced a new ISO repo. 


 $ ll /var//lib//pulp/content/units/iso/12 
 total 0 
 drwxr-sr-x. 2 apache pulp 19 Sep    2 08:33 3f7c65dc3598a59bbb867425c4e52cc54ecb66ff0f6db4656d349799b96594 
 (pulp) [vagrant@pulp2-nightly-pulp3-source-centos7 ~]$ ll /var//lib//pulp/content/units/iso/12/3f7c65dc3598a59bbb867425c4e52cc54ecb66ff0f6db4656d349799b96594/ 

 ``` 

 All the content that appears after pulp3 is installed, does not have write permission for the pulp group. This makes it impossible to create hard link during the migration https://pulp.plan.io/issues/7244 


 [0] https://github.com/pulp/pulp_installer/blob/master/roles/pulp_common/tasks/install.yml#L107-L133

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