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Message-ID: <CAPTn0cCwm2HGLZVf-FqpNNPEM=nVBNeTcE6BV6xbnNa_XOuZtw@mail.gmail.com> Date: Fri, 13 Feb 2015 10:00:27 +0800 From: Li Xi <pkuelelixi@...il.com> To: jon ernst <jonernst07@...il.com> Cc: "linux-ext4@...r.kernel.org List" <linux-ext4@...r.kernel.org> Subject: Re: [v8 0/5] ext4: add project quota support Hi Jon, Yeah, I've written a script to test the project quota which has about a dozen of test suites. However, sorry, I didn't add xfstest cases for it. And we need to apply a series of e2fsprogs patches to enable project quota feature though. Thanks, Li Xi On Tue, Jan 27, 2015 at 2:46 AM, jon ernst <jonernst07@...il.com> wrote: > Xi, > Just a question, do you have any test scripts or xfstest cases for > this patchset? > > Thanks, > Jon > > On Tue, Dec 9, 2014 at 12:22 AM, Li Xi <pkuelelixi@...il.com> wrote: >> The following patches propose an implementation of project quota >> support for ext4. A project is an aggregate of unrelated inodes >> which might scatter in different directories. Inodes that belong >> to the same project possess an identical identification i.e. >> 'project ID', just like every inode has its user/group >> identification. The following patches add project quota as >> supplement to the former uer/group quota types. >> >> The semantics of ext4 project quota is consistent with XFS. Each >> directory can have EXT4_INODE_PROJINHERIT flag set. When the >> EXT4_INODE_PROJINHERIT flag of a parent directory is not set, a >> newly created inode under that directory will have a default project >> ID (i.e. 0). And its EXT4_INODE_PROJINHERIT flag is not set either. >> When this flag is set on a directory, following rules will be kept: >> >> 1) The newly created inode under that directory will inherit both >> the EXT4_INODE_PROJINHERIT flag and the project ID from its parent >> directory. >> >> 2) Hard-linking a inode with different project ID into that directory >> will fail with errno EXDEV. >> >> 3) Renaming a inode with different project ID into that directory >> will fail with errno EXDEV. However, 'mv' command will detect this >> failure and copy the renamed inode to a new inode in the directory. >> Thus, this new inode will inherit both the project ID and >> EXT4_INODE_PROJINHERIT flag. >> >> 4) If the project quota of that ID is being enforced, statfs() on >> that directory will take the quotas as another upper limits along >> with the capacity of the file system, i.e. the total block/inode >> number will be the minimum of the quota limits and file system >> capacity. >> >> Changelog: >> * v8 <- v7: >> - Rebase to newest dev branch of ext4 repository (3.18.0_rc3). >> * v7 <- v6: >> - Map ext4 inode flags to xflags of struct fsxattr; >> - Add patch to cleanup ext4 inode flag definitions. >> * v6 <- v5: >> - Add project ID check for cross rename; >> - Remove patch of EXT4_IOC_GETPROJECT/EXT4_IOC_SETPROJECT ioctl >> * v5 <- v4: >> - Check project feature when set/get project ID; >> - Do not check project feature for project quota; >> - Add support of FS_IOC_FSSETXATTR/FS_IOC_FSGETXATTR. >> * v4 <- v3: >> - Do not check project feature when set/get project ID; >> - Use EXT4_MAXQUOTAS instead of MAXQUOTAS in ext4 patches; >> - Remove unnecessary change of fs/quota/dquot.c; >> - Remove CONFIG_QUOTA_PROJECT. >> * v3 <- v2: >> - Add EXT4_INODE_PROJINHERIT semantics. >> * v2 <- v1: >> - Add ioctl interface for setting/getting project; >> - Add EXT4_FEATURE_RO_COMPAT_PROJECT; >> - Add get_projid() method in struct dquot_operations; >> - Add error check of ext4_inode_projid_set/get(). >> >> v7: http://www.spinics.net/lists/linux-fsdevel/msg80404.html >> v6: http://www.spinics.net/lists/linux-fsdevel/msg80022.html >> v5: http://www.spinics.net/lists/linux-api/msg04840.html >> v4: http://lwn.net/Articles/612972/ >> v3: http://www.spinics.net/lists/linux-ext4/msg45184.html >> v2: http://www.spinics.net/lists/linux-ext4/msg44695.html >> v1: http://article.gmane.org/gmane.comp.file-systems.ext4/45153 >> >> Any comments or feedbacks are appreciated. >> >> Regards, >> - Li Xi >> >> Li Xi (5): >> vfs: adds general codes to enforces project quota limits >> ext4: adds project ID support >> ext4: adds project quota support >> ext4: adds FS_IOC_FSSETXATTR/FS_IOC_FSGETXATTR interface support >> ext4: cleanup inode flag definitions >> >> fs/ext4/ext4.h | 190 +++++++++++++++++++++---- >> fs/ext4/ialloc.c | 6 + >> fs/ext4/inode.c | 29 ++++ >> fs/ext4/ioctl.c | 330 +++++++++++++++++++++++++++++++------------- >> fs/ext4/namei.c | 17 +++ >> fs/ext4/super.c | 96 +++++++++++-- >> fs/quota/dquot.c | 35 ++++- >> fs/quota/quota.c | 8 +- >> fs/quota/quotaio_v2.h | 6 +- >> fs/xfs/xfs_fs.h | 47 +++---- >> include/linux/quota.h | 2 + >> include/uapi/linux/fs.h | 59 ++++++++ >> include/uapi/linux/quota.h | 6 +- >> 13 files changed, 650 insertions(+), 181 deletions(-) >> >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-ext4" in >> the body of a message to majordomo@...r.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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