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Debating overlayfsDebating overlayfsPosted Jun 21, 2011 9:51 UTC (Tue) by nikanth (guest, #50093)Parent article: Debating overlayfs
Anyway, the writable filesystem on top is not usable by itself. The data on writable disk is meaningful only on top of read-only disk(fs).
Wouldn't it be better, if COW file-systems like btrfs can provide a feature to write new blocks only to writable disk, instead of going for generalized solutions. Btrfs would need a way to check for the root of the tree(superblock) in the new disk, before using the one from read-only disk.
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Debating overlayfs Posted Aug 2, 2012 11:26 UTC (Thu) by engla (guest, #47454) [Link]
(this is happening with btrfs now, it's called "seed device")
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