Thanks, Darren.
I've taken the liberty of reordering my follow-up for clarity. Just to
be clear, I'm not critiquing ZFS, just trying to learn it by pushing at
some of the corner cases of filesystem-system interactions. I'm trying
to figure out the implications of various ZFS features when
Does that mean that paging out dirty mmap pages go to new places and
require metadata updates as well?
Yes.
Indeed, given that ZFS always writes new places (except for uberblock as
you noted), then that does make the snapshots easier and accounts for
there being no explicit code
Apologies in advance for the newbie internals question, but could someone
please give me a pointer to how ZFS snapshots cause future modifications to
files to be written to different disk blocks? I'm looking at OpenSolaris NV
bld 66.
How do snapshots interact with open files or files with
Apologies in advance for the newbie internals question, but could
someone please give me a pointer to how ZFS snapshots cause future
modifications to files to be written to different disk blocks? I'm
looking at OpenSolaris NV bld 66.
snapshots don't really cause that. ZFS never overwrites
