[LU-15721] projid quota limit statfs() on directories only with PROJINHERIT

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.16.0
• Severity: 3
• Assignee: Andreas Dilger
• Reporter: Andreas Dilger

Description

LU-9555 limited the data returned from statfs() (df) to the limits associated with a specific project quota if the directory has lli_projid set to a non-zero value.

However, for consistency with ext4 and XFS (on which the project quota feature is based) this quota limit should only be imposed if the PROJINHERIT flag is set on the inode:

static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf)
{
        :
        :
#ifdef CONFIG_QUOTA
        if (ext4_test_inode_flag(dentry->d_inode, EXT4_INODE_PROJINHERIT) &&
            sb_has_quota_limits_enabled(sb, PRJQUOTA))
                ext4_statfs_project(sb, EXT4_I(dentry->d_inode)->i_projid, buf);
#endif
}

int xfs_fs_statfs(struct dentry *dentry, struct kstatfs *statp)
{
        :
        if ((ip->i_diflags & XFS_DIFLAG_PROJINHERIT) &&
            ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD))) ==
                              (XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD))
                xfs_qm_statvfs(ip, statp);
}

Issue Links

• is related to: LU-17395 df -h is limited by project quota even if quota enforcement is disabled
• is related to: LU-19034 'lfs df' should limit statfs by project quota limits
• is related to: LU-9555 "df /path/to/project" should return projid-specific values
• is related to: LU-16771 add client statfs() cache for project quotas