[RFC PATCH 00/25] Add quota supporting in ubifs

[Dongsheng Yang]

Hi Jan,
	I met an error message in my testing:
[104236.956171] __quota_error: 3600 callbacks suppressed
[104236.958772] Quota error (device ubifs): free_dqentry: Quota 
structure has offset to other block (0) than it should (5)

What does that mean? What's the kind of error? Could you give me
a clue for it?

Thanx a lot
Yang


On 07/21/2015 04:37 PM, Dongsheng Yang wrote:
> Hi Atem, Richard and others,
> 	This is a patchset to add quota supporting in ubifs.
> [1/25] - [7/25] are working to make quotactl to support filesystems
> which are running on char device.
>
> Others are about making ubifs to support quota
> Please help to review or test it. Any comment is welcome :).
>
> Hi Jan Kara,
> 	I am not sure I am using the quota APIs correctly, please
> help to correct me if I am wrong.
>
> Also you can get the code from:
> https://github.com/yangdongsheng/linux.git  ubifs_quota_v1
>
> 	My simple testing is shown as below:
> [root at atest-guest linux_compile]# mount -t ubifs -o usrquota,grpquota /dev/ubi0_0 /mnt/ubifs/
> [root at atest-guest linux_compile]# quotacheck -ug /mnt/ubifs
> [root at atest-guest linux_compile]# quotaon /mnt/ubifs
> [root at atest-guest linux_compile]# repquota /mnt/ubifs
> *** Report for user quotas on device /dev/ubi0_0
> Block grace time: 7days; Inode grace time: 7days
>                          Block limits                File limits
> User            used    soft    hard  grace    used  soft  hard  grace
> ----------------------------------------------------------------------
> root      --       0       0       0              1     0     0
> [root at atest-guest linux_compile]# setquota root 10 10 3 3 /mnt/ubifs
> [root at atest-guest linux_compile]# repquota /mnt/ubifs
> *** Report for user quotas on device /dev/ubi0_0
> Block grace time: 7days; Inode grace time: 7days
>                          Block limits                File limits
> User            used    soft    hard  grace    used  soft  hard  grace
> ----------------------------------------------------------------------
> root      --       0      10      10              1     3     3
> [root at atest-guest linux_compile]# touch /mnt/ubifs/{1,11,111}
> ubifs: warning, user file quota exceeded.
> [root at atest-guest linux_compile]# repquota /mnt/ubifs
> *** Report for user quotas on device /dev/ubi0_0
> Block grace time: 7days; Inode grace time: 7days
>                          Block limits                File limits
> User            used    soft    hard  grace    used  soft  hard  grace
> ----------------------------------------------------------------------
> root      -+       0      10      10              4     3     3  7days
> [root at atest-guest linux_compile]# rm -rf /mnt/ubifs/1*
> [root at atest-guest linux_compile]# repquota /mnt/ubifs
> *** Report for user quotas on device /dev/ubi0_0
> Block grace time: 7days; Inode grace time: 7days
>                          Block limits                File limits
> User            used    soft    hard  grace    used  soft  hard  grace
> ----------------------------------------------------------------------
> root      --       0      10      10              1     3     3
> [root at atest-guest linux_compile]# dd if=/dev/urandom of=/mnt/ubifs/data bs=1K count=11
> ubifs: warning, user block quota exceeded.
> 11+0 records in
> 11+0 records out
> 11264 bytes (11 kB) copied, 0.216498 s, 52.0 kB/s
> [root at atest-guest linux_compile]# repquota /mnt/ubifs
> *** Report for user quotas on device /dev/ubi0_0
> Block grace time: 7days; Inode grace time: 7days
>                          Block limits                File limits
> User            used    soft    hard  grace    used  soft  hard  grace
> ----------------------------------------------------------------------
> root      +-      11      10      10  7days       2     3     3
> [root at atest-guest linux_compile]# rm -rf /mnt/ubifs/data
> [root at atest-guest linux_compile]# repquota /mnt/ubifs
> *** Report for user quotas on device /dev/ubi0_0
> Block grace time: 7days; Inode grace time: 7days
>                          Block limits                File limits
> User            used    soft    hard  grace    used  soft  hard  grace
> ----------------------------------------------------------------------
> root      --       0      10      10              1     3     3
>
>
> Dongsheng Yang (25):
>    fs: introduce a ->s_cdev field into struct super_block
>    ubi: introduce a interface to get cdev in ubi_volume
>    ubifs: fill sb->s_cdev in ubifs_fill_super()
>    fs: super: introduce the functions to get super by cdev reference
>    fs: char_dev: introduce lookup_cdev function to find cdev by name
>    fs: dquot: skip invalidate_bdev if bdev is NULL
>    fs: quota: make quota support fs which is running on char dev
>    ubifs: fix a typo in comment of ubifs_budget_req
>    ubifs: extend budget for blocks
>    ubifs: fill ->s_dev in ubifs_fill_super
>    ubifs: export read_block() from file.c
>    ubifs: introduce quota related mount options
>    ubifs: introduce a field named as budgeted to ubifs_inode
>    ubifs: implement IO functions for quota files
>    ubifs: disable quota in ubifs_put_super
>    ubifs: write quota back in ubifs_sync
>    ubifs: suspend & resume quota properly in ubifs_remount
>    ubifs: record quota information about inode in ubifs_new_inode
>    ubifs: free quota inode information in ubifs_evict_inode
>    ubifs: alloc quota space in ubifs_write_begin
>    ubifs: free quota space in do_truncation and unlink
>    ubifs: adapt quota space informatin in do_setattr
>    ubifs: transfer quota information in changing owner or group
>    ubifs: implement ubifs_qctl_operations for quotactl
>    ubifs: make ubifs to support quota
>
>   drivers/mtd/ubi/kapi.c  |   6 +
>   fs/char_dev.c           |  72 ++++++++++
>   fs/quota/dquot.c        |   3 +-
>   fs/quota/quota.c        |  30 +++--
>   fs/super.c              |  45 +++++++
>   fs/ubifs/budget.c       |   4 +
>   fs/ubifs/debug.c        |   2 +
>   fs/ubifs/dir.c          |  24 +++-
>   fs/ubifs/file.c         |  56 +++++++-
>   fs/ubifs/ioctl.c        |   1 +
>   fs/ubifs/super.c        | 352 +++++++++++++++++++++++++++++++++++++++++++++++-
>   fs/ubifs/ubifs.h        |  19 ++-
>   include/linux/fs.h      |   5 +
>   include/linux/mtd/ubi.h |   1 +
>   14 files changed, 597 insertions(+), 23 deletions(-)
>