Extended Attributes across filesystems

Extended Attributes across filesystems

[alb348]

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Hi,

I am doing some research into filesystems, and I understand that you are 
amongst the leading experts on the topic.

I would be really grateful if you could help me by answering some quick 
questions regarding Extended Attributes:

1) Apart from the maximum number / size limitations affecting some 
filesystems (ext2, ext3, ext4), as mentioned in attr5 / man5 section of 
the Linux manual online, are there any other relevant differences across 
the filesystems that may create problems in transfering Extended 
Attributes (along with the files) across filesystems?

2) Will the attr (also called xattr) functions work equally well on all 
the filesystems that support EA? In other words, are the EA-management 
implementations across the Unix filesystems sufficiently standardized?

3) As far as you know, is there any operating system, apart from 
BeOS/Haiku, where the indexing and querying processes of EAs are managed 
by the operating system itself? Do you think that this particular 
feature of Haiku is a really a significant advantage or not so much?

I imagine that you are very busy with you work, and I would really 
appreciate your help.

Looking forward to your reply, I wish you all the best.

Regards,

Tes Bezier



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