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Project quota is a new ZFS system space/object usage accounting and enforcement mechanism. Similar as user/group quota, project quota is another dimension of system quota. It bases on the new object attribute - project ID. Project ID is a numerical value to indicate to which project an object belongs. An object only can belong to one project though you (the object owner or privileged user) can change the object project ID via 'chattr -p' or 'zfs project [-s] -p' explicitly. The object also can inherit the project ID from its parent when created if the parent has the project inherit flag (that can be set via 'chattr +P' or 'zfs project -s [-p]'). By accounting the spaces/objects belong to the same project, we can know how many spaces/objects used by the project. And if we set the upper limit then we can control the spaces/objects that are consumed by such project. It is useful when multiple groups and users cooperate for the same project, or a user/group needs to participate in multiple projects. Support the following commands and functionalities: zfs set projectquota@project zfs set projectobjquota@project zfs get projectquota@project zfs get projectobjquota@project zfs get projectused@project zfs get projectobjused@project zfs projectspace zfs allow projectquota zfs allow projectobjquota zfs allow projectused zfs allow projectobjused zfs unallow projectquota zfs unallow projectobjquota zfs unallow projectused zfs unallow projectobjused chattr +/-P chattr -p project_id lsattr -p This patch also supports tree quota based on the project quota via "zfs project" commands set as following: zfs project [-d|-r] <file|directory ...> zfs project -C [-k] [-r] <file|directory ...> zfs project -c [-0] [-d|-r] [-p id] <file|directory ...> zfs project [-p id] [-r] [-s] <file|directory ...> For "df [-i] $DIR" command, if we set INHERIT (project ID) flag on the $DIR, then the proejct [obj]quota and [obj]used values for the $DIR's project ID will be shown as the total/free (avail) resource. Keep the same behavior as EXT4/XFS does. Reviewed-by: Andreas Dilger <andreas.dilger@intel.com> Reviewed-by Ned Bass <bass6@llnl.gov> Reviewed-by: Matthew Ahrens <mahrens@delphix.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Fan Yong <fan.yong@intel.com> TEST_ZIMPORT_POOLS="zol-0.6.1 zol-0.6.2 master" Change-Id: Ib4f0544602e03fb61fd46a849d7ba51a6005693c Closes #6290
84 lines
2.4 KiB
C
84 lines
2.4 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2017, Intel Corporation. All rights reserved.
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*/
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#ifndef _SYS_ZFS_PROJECT_H
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#define _SYS_ZFS_PROJECT_H
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#ifndef _KERNEL
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#ifndef _SYS_MOUNT_H
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/* XXX: some hack to avoid include sys/mount.h */
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#define _SYS_MOUNT_H
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#endif
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#endif
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#include <linux/fs.h>
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#ifdef FS_PROJINHERIT_FL
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#define ZFS_PROJINHERIT_FL FS_PROJINHERIT_FL
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#else
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#define ZFS_PROJINHERIT_FL 0x20000000
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#endif
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#ifdef FS_IOC_FSGETXATTR
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typedef struct fsxattr zfsxattr_t;
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#define ZFS_IOC_FSGETXATTR FS_IOC_FSGETXATTR
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#define ZFS_IOC_FSSETXATTR FS_IOC_FSSETXATTR
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#else
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struct zfsxattr {
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uint32_t fsx_xflags; /* xflags field value (get/set) */
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uint32_t fsx_extsize; /* extsize field value (get/set) */
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uint32_t fsx_nextents; /* nextents field value (get) */
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uint32_t fsx_projid; /* project identifier (get/set) */
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uint32_t fsx_cowextsize;
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unsigned char fsx_pad[8];
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};
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typedef struct zfsxattr zfsxattr_t;
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#define ZFS_IOC_FSGETXATTR _IOR('X', 31, zfsxattr_t)
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#define ZFS_IOC_FSSETXATTR _IOW('X', 32, zfsxattr_t)
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#endif
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#define ZFS_DEFAULT_PROJID (0ULL)
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/*
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* It is NOT ondisk project ID value. Just means either the object has
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* no project ID or the operation does not touch project ID attribute.
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*/
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#define ZFS_INVALID_PROJID (-1ULL)
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static inline boolean_t
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zpl_is_valid_projid(uint32_t projid)
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{
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/*
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* zfsxattr::fsx_projid is 32-bits, when convert to uint64_t,
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* the higher 32-bits will be set as zero, so cannot directly
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* compare with ZFS_INVALID_PROJID (-1ULL)
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*/
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if ((uint32_t)ZFS_INVALID_PROJID == projid)
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return (B_FALSE);
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return (B_TRUE);
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}
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#endif /* _SYS_ZFS_PROJECT_H */
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