0424c8ffaa
Upgrading to feature@project_quota, currently trigger upgrade task around project quota usage upgrade, which marks each inode dirty via, dmu_objset_id_quota_upgrade()->dmu_objset_id_quota_upgrade_cb()-> dmu_objset_space_upgrade(). Project quota space upgrade task marks each dnode dirty, expecting that when the dnode_sync() is done, dnode’s project usage would be accounted. But as there is no change in projid, so effectively, project quota upgrade task doesn't change anything. When actual projid is set on an object via `zfs project -p <projid> -s <file/dir>`, then object usage gets account-ed under the projid set. But usage for projid=0 (ZFS_DEFAULT_PROJID) underflows and becomes negative. Because quota update task moves usage from projid "0" to new projid set. Solution: dmu_objset_space_upgrade() for projectquota doesn't change the usage accounting, so skip it. This effectively avoids dirtying large number of dnodes, which is un-necessary. When object doesn't have projid set, means its ZFS_INVALID_PROJID, so change zpl_get_file_info() to consider projid as ZFS_INVALID_PROJID instead of ZFS_DEFAULT_PROJID=0. And skip updating usage for ZFS_INVALID_PROJID in do_*quota_update(). This effectively avoid the underflow of usage accounting on ZFS_DEFAULT_PROJID. Signed-off-by: Jitendra Patidar <jitendra.patidar@nutanix.com> |
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README.md
OpenZFS is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the OpenZFS community. This repository contains the code for running OpenZFS on Linux and FreeBSD.
Official Resources
- Documentation - for using and developing this repo
- ZoL Site - Linux release info & links
- Mailing lists
- OpenZFS site - for conference videos and info on other platforms (illumos, OSX, Windows, etc)
Installation
Full documentation for installing OpenZFS on your favorite operating system can be found at the Getting Started Page.
Contribute & Develop
We have a separate document with contribution guidelines.
We have a Code of Conduct.
Release
OpenZFS is released under a CDDL license.
For more details see the NOTICE, LICENSE and COPYRIGHT files; UCRL-CODE-235197
Supported Kernels
- The
METAfile contains the officially recognized supported Linux kernel versions. - Supported FreeBSD versions are any supported branches and releases starting from 13.0-RELEASE.