strange readonly filesystem_count error

allanjude / zxfer

A continuation of development on zxfer, a popular script for managing ZFS snapshot replication

BSD 2-Clause "Simplified" License

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strange readonly filesystem_count error #49

Closed memnochproxy closed 5 years ago

memnochproxy commented 5 years ago

I've tried various combinations of zfs allow, sudo and as root. It appears that the destination filesystem doesn't want to be created. Hints on what I should look at next?

zfs get readonly fs2pool/mail3-bu/spool NAME PROPERTY VALUE SOURCE fs2pool/mail3-bu/spool readonly off default

/usr/local/bin/zxfer -dFkv -g700 -O ctbu@mail3d -R mail3spool1/spool/mail fs2pool/mail3-bu/spool Checking grandfather status of all snapshots marked for deletion... Grandfather check passed. Creating destination filesystem "fs2pool/mail3-bu/spool/mail" with specified properties. cannot create 'fs2pool/mail3-bu/spool/mail': 'filesystem_count' is readonly Error when creating destination filesystem.

kpfleming commented 5 years ago

zxfer is trying to set a property called filesystem_count which can't be set. Which version of zxfer are you using and what are the source and destination operating systems/versions?

memnochproxy commented 5 years ago

cd /usr/local/src/zxfer $ git show commit aa6ac974cc15b4bc06b6f02598e19746c2537230 Merge: 1893890 895e892 Author: Allan Jude github@shellfusion.ca Date: Wed Dec 19 12:58:59 2018 -0500

Merge pull request #47 from matsimon/new-readonly-attributes

Declare new readonly properties: createtxg and guid

$ cat /sys/module/spl/version 0.8.0-rc3 $ zfs get version fs2pool 5 cd /usr/local/src/zfs $ git show commit 07237a7bc1eab62d8bb2bb7b4abafe7a2fd3a482 Author: John Wren Kennedy jwk404@gmail.com Date: Fri Feb 15 13:45:46 2019 -0700

memnochproxy commented 5 years ago

and on sending system, $ cat /sys/module/spl/version 0.7.12-1 $ rpm -qi zfs Name : zfs Version : 0.7.12 Release : 1.el7_6 Architecture: x86_64 Install Date: Wed 06 Feb 2019 09:59:01 AM PST

allanjude commented 5 years ago

the filesystem_count property is always read only, it is purely informational, like 'compressratio' etc, you can't change it. It is the count of child datasets, related to the filesystem_limit property, that lets you limit how many child datasets someone can create when you delegate a filesystem to them.

It should be on the readonly_properties list, and somehow is not, I'll get that fixed up.