From: Shriram Rajagopalan <rshriram@cs.ubc.ca>
To: Wen Congyang <wency@cn.fujitsu.com>
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>,
Ian Jackson <Ian.Jackson@eu.citrix.com>,
Jiang Yunhong <yunhong.jiang@intel.com>,
Dong Eddie <eddie.dong@intel.com>,
xen devel <xen-devel@lists.xen.org>,
Yang Hongyang <yanghy@cn.fujitsu.com>,
Ian Campbell <ian.campbell@citrix.com>
Subject: Re: [RFC Patch v3 10/18] block-remus: pass uuid to the callback td_open
Date: Wed, 24 Sep 2014 12:27:27 -0700 [thread overview]
Message-ID: <CAP8mzPNZag3043y2RkyN4DWLBqmwNt-1U9a6_bgnFUXfPm87Rw@mail.gmail.com> (raw)
In-Reply-To: <1409908261-18682-11-git-send-email-wency@cn.fujitsu.com>
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On Sep 5, 2014 5:15 AM, "Wen Congyang" <wency@cn.fujitsu.com> wrote:
>
> remus's callback td_open needs uuid, but it is hard coded as 0.
> After commit 4b1af8, the vbd's uuid is the minor of the blktap
> device, not 0.
>
> Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
> Cc: Shriram Rajagopalan <rshriram@cs.ubc.ca>
> ---
> tools/blktap2/drivers/block-aio.c | 3 ++-
> tools/blktap2/drivers/block-cache.c | 3 ++-
> tools/blktap2/drivers/block-log.c | 3 ++-
> tools/blktap2/drivers/block-qcow.c | 3 ++-
> tools/blktap2/drivers/block-ram.c | 3 ++-
> tools/blktap2/drivers/block-remus.c | 8 ++------
> tools/blktap2/drivers/block-vhd.c | 3 ++-
> tools/blktap2/drivers/tapdisk-interface.c | 4 +++-
> tools/blktap2/drivers/tapdisk.h | 2 +-
> 9 files changed, 18 insertions(+), 14 deletions(-)
>
> diff --git a/tools/blktap2/drivers/block-aio.c
b/tools/blktap2/drivers/block-aio.c
> index 10ab20b..1b560e5 100644
> --- a/tools/blktap2/drivers/block-aio.c
> +++ b/tools/blktap2/drivers/block-aio.c
> @@ -111,7 +111,8 @@ static int tdaio_get_image_info(int fd,
td_disk_info_t *info)
> }
>
> /* Open the disk file and initialize aio state. */
> -int tdaio_open(td_driver_t *driver, const char *name, td_flag_t flags)
> +int tdaio_open(td_driver_t *driver, const char *name, td_flag_t flags,
> + td_uuid_t uuid)
> {
> int i, fd, ret, o_flags;
> struct tdaio_state *prv;
> diff --git a/tools/blktap2/drivers/block-cache.c
b/tools/blktap2/drivers/block-cache.c
> index 1d2f4eb..cd6ea6a 100644
> --- a/tools/blktap2/drivers/block-cache.c
> +++ b/tools/blktap2/drivers/block-cache.c
> @@ -517,7 +517,8 @@ block_cache_put_request(block_cache_t *cache,
block_cache_request_t *breq)
> }
>
> static int
> -block_cache_open(td_driver_t *driver, const char *name, td_flag_t flags)
> +block_cache_open(td_driver_t *driver, const char *name, td_flag_t flags,
> + td_uuid_t uuid)
> {
> int i, err;
> radix_tree_t *tree;
> diff --git a/tools/blktap2/drivers/block-log.c
b/tools/blktap2/drivers/block-log.c
> index 5330cdc..7b33b63 100644
> --- a/tools/blktap2/drivers/block-log.c
> +++ b/tools/blktap2/drivers/block-log.c
> @@ -585,7 +585,8 @@ static void ctl_request(event_id_t id, char mode,
void *private)
>
> static int tdlog_close(td_driver_t*);
>
> -static int tdlog_open(td_driver_t* driver, const char* name, td_flag_t
flags)
> +static int tdlog_open(td_driver_t* driver, const char* name, td_flag_t
flags,
> + td_uuid_t uuid)
> {
> struct tdlog_state* s = (struct tdlog_state*)driver->data;
> int rc;
> diff --git a/tools/blktap2/drivers/block-qcow.c
b/tools/blktap2/drivers/block-qcow.c
> index b45bcaa..64dfafc 100644
> --- a/tools/blktap2/drivers/block-qcow.c
> +++ b/tools/blktap2/drivers/block-qcow.c
> @@ -865,7 +865,8 @@ out:
> }
>
> /* Open the disk file and initialize qcow state. */
> -int tdqcow_open (td_driver_t *driver, const char *name, td_flag_t flags)
> +int tdqcow_open (td_driver_t *driver, const char *name, td_flag_t flags,
> + td_uuid_t uuid)
> {
> int fd, len, i, ret, size, o_flags;
> td_disk_info_t *bs = &(driver->info);
> diff --git a/tools/blktap2/drivers/block-ram.c
b/tools/blktap2/drivers/block-ram.c
> index a859481..b64a194 100644
> --- a/tools/blktap2/drivers/block-ram.c
> +++ b/tools/blktap2/drivers/block-ram.c
> @@ -108,7 +108,8 @@ static int get_image_info(int fd, td_disk_info_t
*info)
> }
>
> /* Open the disk file and initialize ram state. */
> -int tdram_open (td_driver_t *driver, const char *name, td_flag_t flags)
> +int tdram_open (td_driver_t *driver, const char *name, td_flag_t flags,
> + td_uuid_t uuid)
> {
> char *p;
> uint64_t size;
> diff --git a/tools/blktap2/drivers/block-remus.c
b/tools/blktap2/drivers/block-remus.c
> index 4ce9dbe..504f6b4 100644
> --- a/tools/blktap2/drivers/block-remus.c
> +++ b/tools/blktap2/drivers/block-remus.c
> @@ -1633,18 +1633,14 @@ static int ctl_register(struct tdremus_state *s)
> /* interface */
>
> static int tdremus_open(td_driver_t *driver, const char *name,
> - td_flag_t flags)
> + td_flag_t flags, td_uuid_t uuid)
> {
> struct tdremus_state *s = (struct tdremus_state *)driver->data;
> int rc;
>
> RPRINTF("opening %s\n", name);
>
> - /* first we need to get the underlying vbd for this driver stack.
To do so we
> - * need to know the vbd's id. Fortunately, for tapdisk2 this is
hard-coded as
> - * 0 (see tapdisk2.c)
> - */
> - device_vbd = tapdisk_server_get_vbd(0);
> + device_vbd = tapdisk_server_get_vbd(uuid);
>
> memset(s, 0, sizeof(*s));
> s->server_fd.fd = -1;
> diff --git a/tools/blktap2/drivers/block-vhd.c
b/tools/blktap2/drivers/block-vhd.c
> index 76ea5bd..06e9c89 100644
> --- a/tools/blktap2/drivers/block-vhd.c
> +++ b/tools/blktap2/drivers/block-vhd.c
> @@ -675,7 +675,8 @@ __vhd_open(td_driver_t *driver, const char *name,
vhd_flag_t flags)
> }
>
> static int
> -_vhd_open(td_driver_t *driver, const char *name, td_flag_t flags)
> +_vhd_open(td_driver_t *driver, const char *name, td_flag_t flags,
> + td_uuid_t uuid)
> {
> vhd_flag_t vhd_flags = 0;
>
> diff --git a/tools/blktap2/drivers/tapdisk-interface.c
b/tools/blktap2/drivers/tapdisk-interface.c
> index 2e51883..36b5393 100644
> --- a/tools/blktap2/drivers/tapdisk-interface.c
> +++ b/tools/blktap2/drivers/tapdisk-interface.c
> @@ -63,6 +63,7 @@ __td_open(td_image_t *image, td_disk_info_t *info)
> {
> int err;
> td_driver_t *driver;
> + td_vbd_t *vbd = image->private;
>
> driver = image->driver;
> if (!driver) {
> @@ -78,7 +79,8 @@ __td_open(td_image_t *image, td_disk_info_t *info)
> }
>
> if (!td_flag_test(driver->state, TD_DRIVER_OPEN)) {
> - err = driver->ops->td_open(driver, image->name,
image->flags);
> + err = driver->ops->td_open(driver, image->name,
image->flags,
> + vbd->uuid);
> if (err) {
> if (!image->driver)
> tapdisk_driver_free(driver);
> diff --git a/tools/blktap2/drivers/tapdisk.h
b/tools/blktap2/drivers/tapdisk.h
> index 66d508e..459eaec 100644
> --- a/tools/blktap2/drivers/tapdisk.h
> +++ b/tools/blktap2/drivers/tapdisk.h
> @@ -157,7 +157,7 @@ struct tap_disk {
> const char *disk_type;
> td_flag_t flags;
> int private_data_size;
> - int (*td_open) (td_driver_t *, const char *,
td_flag_t);
> + int (*td_open) (td_driver_t *, const char *,
td_flag_t, td_uuid_t);
> int (*td_close) (td_driver_t *);
> int (*td_get_parent_id) (td_driver_t *, td_disk_id_t *);
> int (*td_validate_parent) (td_driver_t *, td_driver_t *,
td_flag_t);
> --
> 1.9.3
>
Acked-by: Shriram Rajagopalan <rshriram@cs.ubc.ca>
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next prev parent reply other threads:[~2014-09-24 19:27 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-05 9:10 [RFC Patch v3 00/18] Some bugfix patches Wen Congyang
2014-09-05 9:10 ` [RFC Patch v3 01/18] copy the correct page to memory Wen Congyang
2014-09-08 11:27 ` Ian Campbell
2014-09-08 11:58 ` Andrew Cooper
2014-09-05 9:10 ` [RFC Patch v3 02/18] csum the correct page Wen Congyang
2014-09-08 11:28 ` Ian Campbell
2014-09-05 9:10 ` [RFC Patch v3 03/18] don't zero out ioreq page Wen Congyang
2014-09-05 9:25 ` Paul Durrant
2014-09-05 9:33 ` Wen Congyang
2014-09-05 9:39 ` Paul Durrant
2014-09-05 10:45 ` David Vrabel
2014-09-12 7:33 ` Wen Congyang
2014-09-05 9:10 ` [RFC Patch v3 04/18] blktap2: dynamic allocate aio_requests to avoid -EBUSY error Wen Congyang
2014-09-08 11:34 ` Ian Campbell
2014-09-24 18:22 ` Shriram Rajagopalan
2014-09-05 9:10 ` [RFC Patch v3 05/18] blktap2: return the correct dev path Wen Congyang
2014-09-05 9:10 ` [RFC Patch v3 06/18] blktap2: use correct way to get free event id Wen Congyang
2014-09-05 9:10 ` [RFC Patch v3 07/18] blktap2: don't return negative " Wen Congyang
2014-09-05 9:10 ` [RFC Patch v3 08/18] blktap2: use correct way to define array Wen Congyang
2014-09-05 9:10 ` [RFC Patch v3 09/18] block-remus: fix memory leak Wen Congyang
2014-09-24 19:37 ` Shriram Rajagopalan
2014-09-25 5:23 ` Wen Congyang
2014-09-25 11:14 ` Shriram Rajagopalan
2014-09-26 2:29 ` Wen Congyang
2014-09-05 9:10 ` [RFC Patch v3 10/18] block-remus: pass uuid to the callback td_open Wen Congyang
2014-09-24 19:27 ` Shriram Rajagopalan [this message]
2014-09-05 9:10 ` [RFC Patch v3 11/18] block-remus: use correct way to get remus_image Wen Congyang
2014-09-24 19:26 ` Shriram Rajagopalan
2014-09-05 9:10 ` [RFC Patch v3 12/18] block-remus: fix bug in tdremus_close() Wen Congyang
2014-09-24 19:24 ` Shriram Rajagopalan
2014-09-05 9:10 ` [RFC Patch v3 13/18] don't call client_flush() when switching to unprotected mode Wen Congyang
2014-09-05 9:10 ` [RFC Patch v3 14/18] pass correct file to qemu if we use blktap2 Wen Congyang
2014-09-08 11:35 ` Ian Campbell
2014-09-05 9:10 ` [RFC Patch v3 15/18] support blktap remus in xl Wen Congyang
2014-09-08 11:39 ` Ian Campbell
2014-09-10 7:19 ` Wen Congyang
2014-09-10 10:04 ` Ian Campbell
2014-09-10 10:36 ` Wen Congyang
2014-09-05 9:10 ` [RFC Patch v3 16/18] update libxl__device_disk_from_xs_be() to support blktap device Wen Congyang
2014-09-08 11:42 ` Ian Campbell
2014-09-09 1:57 ` Wen Congyang
2014-09-11 7:58 ` Wen Congyang
2014-09-12 8:53 ` Wei Liu
2014-09-12 9:03 ` Wen Congyang
2014-09-12 10:35 ` Wei Liu
2014-09-05 9:11 ` [RFC Patch v3 17/18] read nictype from xenstore Wen Congyang
2014-09-08 11:41 ` Ian Campbell
2014-09-05 9:11 ` [RFC Patch v3 18/18] x86/hvm: Always set pending event injection when loading VMC[BS] state Wen Congyang
2014-09-10 15:06 ` Aravind Gopalakrishnan
2014-09-11 6:10 ` Wen Congyang
2014-09-11 10:35 ` Tim Deegan
2014-09-12 3:14 ` Wen Congyang
2014-09-12 15:43 ` Tim Deegan
2014-09-17 7:56 ` Wen Congyang
2014-09-17 14:29 ` Aravind Gopalakrishnan
2014-09-18 0:05 ` Aravind Gopalakrishnan
2014-09-18 0:05 ` Aravind Gopalakrishnan
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