Date: Tue, 19 Nov 2024 20:43:07 -0800 From: "Pat Maddox" <pat@patmaddox.com> To: freebsd-hackers@freebsd.org Subject: A proposal for makefs -t zfs to support more zpool layouts Message-ID: <cd133384-0c0b-4b56-b317-131017ae0b57@app.fastmail.com>
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Here's a valid zpool configuration that makefs -t zfs does not currently support: truncate -s 100m file.zfs zpool create -m none my-test-pool $(realpath)/file.zfs zfs create -o mountpoint=/dataset1 my-test-pool/dataset1 zfs create -o mountpoint=/foo/dataset2 my-test-pool/dataset2 zfs list -r my-test-pool NAME USED AVAIL REFER MOUNTPOINT my-test-pool 218K 39.8M 24K none my-test-pool/dataset1 24K 39.8M 24K /dataset1 my-test-pool/dataset2 24K 39.8M 24K /foo/dataset2 makefs has a few constraints that prevent this: - there must be a dataset with a mountpoint matching the rootpath - all mountpoints must descend from the root path - root path must not be canmount=off My assertion: makefs -t zfs should, as much as possible, be able to create zpool configurations equivalent to those produced by a series of zpool/zfs commands. 1. What are your thoughts on that as a worthwhile direction for makefs? 2. What obstacles do you see in terms of getting there? I am interested in implementing these changes, and invite all ideas and feedback before proceeding. Thanks, Pat
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