Hi Joao! :) 2011/7/2 João Eduardo Luís <[email protected]>: > Hello. > > Nice post. I had never noticed that. And I am able to reproduce the ls-stat > behavior on a debian box with ext4 fs and no SELinux, or any other ACL's > whatsoever.
OK, so far I can conclude it's not 100% reproducible on every case...and it looks it is indeed due to enabled ACL and/or SELinux...hmmmmmm > You state: > >> But my friend pointed that stat was accouting extra blocks that might (I say >> "might" because my friend is not so sure) contain metadata such as SELinux >> and ACL. > > I am no ext3 expert, but I cannot wrap my head around the FS accounting for > *metadata* blocks when stat is invoked. And I don't believe the ACLs would be > kept within data blocks either, so this makes little sense to me. I am also still digging a bit further about that. Spare time is my only problem now plus my health. So, I am open for suggestion for other people here. But still, thanks for sharing your opinions. It means a lot for me (who is no expert in fs :D ) > In any case, after looking at ext3, I now believe the 'getattr' method in > 'struct inode_operations' is left for the VFS to handle with its > 'generic_fillattr()' method, and it pretty much copies everything relevant > from the inode to the 'struct kstat'. Thing is, does the inode 'i_blocks' > field keep track of both metadata and data blocks, or only data blocks? (I > think only the latter makes any sense, but hey, that's just me). Sssshhhh, I felt this will lead into another accounting journey, just like when I wrote about /proc/meminfo...great :D Wonder what tools could help me here.... cscope? watchpoints of gdb..... ufffff -- regards, Mulyadi Santosa Freelance Linux trainer and consultant blog: the-hydra.blogspot.com training: mulyaditraining.blogspot.com _______________________________________________ Kernelnewbies mailing list [email protected] http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
