openzfs/zfs

ZFS needs a lazytime property to set lazytime mount option

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#9,843 建立於 2020年1月15日

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Type: Featuregood first issue

描述

System information

Type Version/Name
Distribution Name Arch Linux
Linux Kernel 5.4.10
Architecture x86_64
ZFS Version 0.8.2-1
SPL Version 0.8.2-1

ZFS supports lazytime, and datasets can be mounted with lazytime by running mount -o remount,lazytime tank/foo, but there is no property in the dataset to influence lazytime so that zfs mount tank/foo will set lazytime on.

貢獻者指南

技術棧
c
領域
backendperformance
議題類型
feature
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
3-5 days
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
clear
前置要求
ZFS property systemC programmingLinux mount options
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
30
研究方向
The issue requests adding a 'lazytime' property to ZFS datasets, similar to existing properties like 'atime'. Investigate how mount options are currently implemented as properties in ZFS, focusing on files such as 'module/zfs/zfs prop.c' and 'lib/libzfs/libzfs mount.c'. The existing support for 'lazytime' via manual remount indicates the kernel feature is available; the task is to expose it as a dataset property. Review the property definitions and mount code to understand how to add a new property that triggers the lazytime mount option during 'zfs mount'.