Re: [PATCH v2] pnfs: Automatically select blocks & objects layouts

Randy Dunlap
2011-08-11T21:43:58Z

On Thu, 11 Aug 2011 14:29:25 -0700 Boaz Harrosh wrote:

>
> Just like files-layout, blocks & objects layouts are part of the
> NFS 4.1 protocol and should be automatically selected if NFS_4_1
> is selected. The small problem is that these depend on other
> Kernel support being present, while files only depends on NFS
> itself.
>
> This patch removes from the user choice the presence of objects
> and blocks layout. But makes sure these are selected only if
> the depended subsystems are present in the Kernel.
>
> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>

v1 applied & built OK for me.
v2 didn't apply to linux-3.1-rc1 cleanly, but I think I got it right.
Maybe not. I got all of this from it:

warning: (NFS_V4_1) selects MD which has unmet direct dependencies (BLOCK)
CC [M] fs/nfs/blocklayout/blocklayout.o
CC [M] fs/nfs/blocklayout/extents.o
In file included from fs/nfs/blocklayout/blocklayout.h:35,
from fs/nfs/blocklayout/extents.c:33:
include/linux/device-mapper.h:49: warning: 'struct bio' declared inside parameter list
include/linux/device-mapper.h:49: warning: its scope is only this definition or declaration, which is probably not what you want
include/linux/device-mapper.h:51: warning: 'struct request' declared inside parameter list
include/linux/device-mapper.h:63: warning: 'struct bio' declared inside parameter list
include/linux/device-mapper.h:66: warning: 'struct request' declared inside parameter list
include/linux/device-mapper.h:83: warning: 'struct bvec_merge_data' declared inside parameter list
include/linux/device-mapper.h:95: warning: 'struct queue_limits' declared inside parameter list
include/linux/device-mapper.h:300: warning: 'struct bio' declared inside parameter list
include/linux/device-mapper.h:301: warning: 'struct request' declared inside parameter list
include/linux/device-mapper.h:475: warning: 'struct request' declared inside parameter list
include/linux/device-mapper.h:476: warning: 'struct request' declared inside parameter list
include/linux/device-mapper.h:477: warning: 'struct request' declared inside parameter list
include/linux/device-mapper.h:478: warning: 'struct request_queue' declared inside parameter list
In file included from fs/nfs/blocklayout/blocklayout.h:35,
from fs/nfs/blocklayout/blocklayout.c:40:
include/linux/device-mapper.h:49: warning: 'struct bio' declared inside parameter list
include/linux/device-mapper.h:49: warning: its scope is only this definition or declaration, which is probably not what you want
include/linux/device-mapper.h:51: warning: 'struct request' declared inside parameter list
include/linux/device-mapper.h:63: warning: 'struct bio' declared inside parameter list
include/linux/device-mapper.h:66: warning: 'struct request' declared inside parameter list
include/linux/device-mapper.h:83: warning: 'struct bvec_merge_data' declared inside parameter list
include/linux/device-mapper.h:95: warning: 'struct queue_limits' declared inside parameter list
include/linux/device-mapper.h:300: warning: 'struct bio' declared inside parameter list
include/linux/device-mapper.h:301: warning: 'struct request' declared inside parameter list
include/linux/device-mapper.h:475: warning: 'struct request' declared inside parameter list
include/linux/device-mapper.h:476: warning: 'struct request' declared inside parameter list
include/linux/device-mapper.h:477: warning: 'struct request' declared inside parameter list
include/linux/device-mapper.h:478: warning: 'struct request_queue' declared inside parameter list
fs/nfs/blocklayout/blocklayout.c: In function 'bl_submit_bio':
fs/nfs/blocklayout/blocklayout.c:132: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c:133: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c:133: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c:136: error: implicit declaration of function 'submit_bio'
fs/nfs/blocklayout/blocklayout.c: In function 'bl_alloc_init_bio':
fs/nfs/blocklayout/blocklayout.c:148: error: implicit declaration of function 'bio_alloc'
fs/nfs/blocklayout/blocklayout.c:148: warning: assignment makes pointer from integer without a cast
fs/nfs/blocklayout/blocklayout.c:152: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c:153: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c:154: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c:155: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c: In function 'bl_add_page_to_bio':
fs/nfs/blocklayout/blocklayout.c:171: error: implicit declaration of function 'bio_add_page'
fs/nfs/blocklayout/blocklayout.c: In function 'bl_end_io_read':
fs/nfs/blocklayout/blocklayout.c:192: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c:193: error: 'BIO_UPTODATE' undeclared (first use in this function)
fs/nfs/blocklayout/blocklayout.c:193: error: (Each undeclared identifier is reported only once
fs/nfs/blocklayout/blocklayout.c:193: error: for each function it appears in.)
fs/nfs/blocklayout/blocklayout.c:193: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c:193: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c:194: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c:194: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c:198: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c:200: error: decrement of pointer to unknown structure
fs/nfs/blocklayout/blocklayout.c:200: error: arithmetic on pointer to an incomplete type
fs/nfs/blocklayout/blocklayout.c:200: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c:201: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c:204: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c:210: error: implicit declaration of function 'bio_put'
fs/nfs/blocklayout/blocklayout.c: In function 'bl_end_io_write_zero':
fs/nfs/blocklayout/blocklayout.c:355: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c:356: error: 'BIO_UPTODATE' undeclared (first use in this function)
fs/nfs/blocklayout/blocklayout.c:356: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c:356: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c:357: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c:357: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c:361: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c:363: error: decrement of pointer to unknown structure
fs/nfs/blocklayout/blocklayout.c:363: error: arithmetic on pointer to an incomplete type
fs/nfs/blocklayout/blocklayout.c:363: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c:364: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c:368: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c: In function 'bl_end_io_write':
fs/nfs/blocklayout/blocklayout.c:381: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c:382: error: 'BIO_UPTODATE' undeclared (first use in this function)
fs/nfs/blocklayout/blocklayout.c:382: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c:382: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c: In function 'map_block':
fs/nfs/blocklayout/blocklayout.c:440: error: implicit declaration of function 'set_buffer_mapped'
fs/nfs/blocklayout/blocklayout.c:441: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c:442: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c:445: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c:445: error: dereferencing pointer to incomplete type
fs/nfs/blocklayout/blocklayout.c: In function 'init_page_for_write':
fs/nfs/blocklayout/blocklayout.c:469: error: implicit declaration of function 'alloc_page_buffers'
fs/nfs/blocklayout/blocklayout.c:469: warning: assignment makes pointer from integer without a cast
fs/nfs/blocklayout/blocklayout.c:477: error: implicit declaration of function 'bh_uptodate_or_lock'
fs/nfs/blocklayout/blocklayout.c:478: error: implicit declaration of function 'bh_submit_read'
fs/nfs/blocklayout/blocklayout.c:486: error: implicit declaration of function 'free_buffer_head'
make[4]: *** [fs/nfs/blocklayout/blocklayout.o] Error 1

and more errors in drivers/md/

> ---
> fs/nfs/Kconfig | 18 ++++--------------
> 1 files changed, 4 insertions(+), 14 deletions(-)
>
> diff --git a/fs/nfs/Kconfig b/fs/nfs/Kconfig
> index 0d30613..dbcd821 100644
> --- a/fs/nfs/Kconfig
> +++ b/fs/nfs/Kconfig
> @@ -89,24 +89,14 @@ config PNFS_FILE_LAYOUT
> tristate
>
> config PNFS_BLOCK
> - tristate "Provide support for the pNFS Block Layout Driver for NFSv4.1 pNFS (EXPERIMENTAL)"
> + tristate
> depends on NFS_FS && NFS_V4_1 && BLK_DEV_DM
> - help
> - Say M here if you want your pNFS client to support the Block Layout Driver
> - (RFC 5663). Requires Multiple devices driver support (DM) and Device mapper
> - support (BLK_DEV_DM).
> -
> - If unsure, say N.
> + default m
>
> config PNFS_OBJLAYOUT
> - tristate "Provide support for the pNFS Objects Layout Driver for NFSv4.1 pNFS (EXPERIMENTAL)"
> + tristate
> depends on NFS_FS && NFS_V4_1 && SCSI_OSD_ULD
> - help
> - Say M here if you want your pNFS client to support the Objects Layout Driver.
> - Requires the SCSI osd initiator library (SCSI_OSD_INITIATOR) and
> - upper level driver (SCSI_OSD_ULD).
> -
> - If unsure, say N.
> + default m
>
> config ROOT_NFS
> bool "Root file system on NFS"
> --

---
~Randy
*** Remember to use Documentation/SubmitChecklist when testing your code ***