On 10/24/2025 4:23 PM, Patrick O'Callaghan wrote:
On Fri, 2025-10-24 at 15:41 -0600, home user via users wrote:
It's not the meta-data handling that concerns me. I understand the
importance of that, and that the meta-data handling does not take up
man-noticeable time. Also, editors (vim is the only one I use),
LibreOffice, and other things make working copies of whatever I open the
tool on. So changes are applied to the working copy, not the original,
until I commit the changes (":w" and ":wq" in vim, "Save" and "Save as"
in most other tools). These all also keep some list of changes for use
by "undo" functionality. So COW seems redundant with the functionality
built into (almost?) everything I use. (Hmmm... Is "dnf" an exception?)
I'm not sure what point you're making here. The existence of COW is
transparent to userland processes, so all of that works exactly the
same with or without COW. It's just that with COW it's more efficient
(faster) and in some corner cases will succeed where a non-COW copy on
a nearly-full filesystem could fail. The only places I have COW turned
off is a) swap, and b) VM filesystems (a large file representing a disk
image) where frequent writes could have a performance penalty because
of fragmentation.
I might have been talking as much or more to myself than to the list.
To me, COW did seem redundant. Y'all seem to have swayed me to COW.
I do not see a /swap (or /Swap or /SWAP) on the desktop. Should there
be one?
Thank-you, Patrick.
--
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