Eric Shubert wrote: > Joseph Sinclair wrote: <<TRIM>> >> Most mixed live/persistent distros use a single file loopback mounted as the >> overlay filesystem (via overlayfs or unionfs), including IIRC Ubuntu >> live/USB. As such, the entire persistent partition is, indeed, limited to >> the *file* size limit of the host partition. >> Most virtual machine systems have similar problems (which is one more reason >> why it's good to *not* put virtual disk files on systems using FAT or NTFS, >> poor windows users...). >> > > Thanks for chiming in on this, Joseph. I'm not terribly familiar with > unionfs/aufs, just enough to be dangerous. ;) > > Can you say then, whether this single-file aspect is true for all > union/aufs implementations, or is it only because of the way it's used > by persistent distros? TIA. >
I've mostly seen it with loop mounted files. I think (not sure) that UnionFS allows other filesystem combinations, but I've never seen that in practice.
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