User: Password:
|
|
Subscribe / Log in / New account

The two sides of reflink()

The two sides of reflink()

Posted May 9, 2009 23:52 UTC (Sat) by butlerm (guest, #13312)
In reply to: The two sides of reflink() by lmb
Parent article: The two sides of reflink()

ZFS (for example) uses an COW design where it isn't remotely practical to
figure out which files / snapshots share which blocks in a reasonable amount
of time. I imagine BTRFS is similar.

However both aforementioned filesystems store block checksums, so perhaps a
more practical means would be to add an interface that returns the block
checksums of a file range (if not the block offsets) to user space, and
generate a candidate duplication list from that.


(Log in to post comments)


Copyright © 2017, Eklektix, Inc.
Comments and public postings are copyrighted by their creators.
Linux is a registered trademark of Linus Torvalds