vbdev modules still open/close bdevs as normal, but
should open bdevs read only when tasting (i.e. reading
the GPT to see if there are SPDK partitions). When
a vbdev module is ready to claim the bdev for purposes
of creating virtual bdevs on top of it, it calls
spdk_vbdev_module_claim_bdev(). It can pass its
open descriptor as well to have it promoted to
write access (required for future vbdev modules like
logical volumes).
Note: error vbdev was changed to copy the base bdev
parameters one-by-one instead of a blind memcpy - we
do not want to copy the base bdev's vbdev_claim_module
into the new bdev!
Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: If2ee67dc78daf96050343c473671aa3402991bb1
Reviewed-on: https://review.gerrithub.io/368628
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Change-Id: I1899a47fa9d9821c16ea648bbe3290f6306d0e3d
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/368626
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This allows vbdev modules to be ready for examine
calls for (physical) bdev modules when the latter
initialize.
This requires the following modifications to existing
bdev modules:
1) error and split now search their config sections
at examine time (instead of init) to see if the
bdev should be consumed by the vbdev module
2) gpt is simplified considerably - it no longer
needs to save bdevs to examine when
gpt initializes later
3) nvme must register its io device before registering
the bdev, since vbdevs may immediately start trying
to send I/O to the new nvme bdev
Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I8fe5686092ffb15fc8bdbc068b09add229d9da6c
Reviewed-on: https://review.gerrithub.io/368598
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Ziye Yang <optimistyzy@gmail.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Add a new spdk_vbdev_module_examine_done() API which
vbdev modules can use to notify the generic bdev layer
once a base bdev examination is complete.
This is especially required for asynchronous vbdevs
like GPT which must issue I/O to the base bdev.
As part of this patch, add examine callbacks
for both split and error, which for now only call
this new functions. Later patches will move code from
the init callback to the examine callback for these
modules. examine callbacks are now required for all
vbdev modules.
Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I49f2d012d1675b878bcd23afff427c740c6502c7
Reviewed-on: https://review.gerrithub.io/368831
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Ziye Yang <optimistyzy@gmail.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
This eliminates overloading of the term "register"
in the context of bdevs, as well as opens up the
idea of examining bdevs not just when they are
registered, but also after they are closed with
write access.
Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I9e15f9dc0fa4e02214f188f987f9da2dbc8db1f7
Reviewed-on: https://review.gerrithub.io/369042
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Ziye Yang <optimistyzy@gmail.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: Ic3051b63942770e45be22af0ae03a78a7c543f81
Reviewed-on: https://review.gerrithub.io/368597
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I96cf4e40e8218c6ba150fe9ffead58340c7bdf6a
Reviewed-on: https://review.gerrithub.io/368627
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Add a name parameter to the MODULE_REGISTER macros, and then
modify each bdev module to pass a string for its name.
Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: If878617ce3c3eacfcf5df44ed6f194f11c66f78f
Reviewed-on: https://review.gerrithub.io/368596
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Change-Id: Ibb28b8432c94e70f522bdf34c5f4a10e4c25a8bb
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/368610
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Ziye Yang <optimistyzy@gmail.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
These are UEFI-style GUIDs in little endian byte order, not standard
UUIDs.
Change-Id: I4d61afa2901830c784c24a5e039bba1d98f32e62
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/368609
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ziye Yang <optimistyzy@gmail.com>
Fix the partition type GUID comparison to actually look at the partition
type GUID, not the unique per-partition GUID, and fix the test to match.
Change-Id: Ie64f1effcc75883f17ccf6240f6469161d2a5aa5
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/368606
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Ziye Yang <optimistyzy@gmail.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
The purpose is to store which partition is used from
the original bdev, and it can be used to read
the further partition entry info.
Change-Id: Idbc4452846e88b486ff281c288704af80938788a
Signed-off-by: Ziye Yang <optimistyzy@gmail.com>
Reviewed-on: https://review.gerrithub.io/368486
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I6a138e1c1d775e8c8bfeede9600f8b0f799ecdad
Signed-off-by: Ziye Yang <optimistyzy@gmail.com>
Reviewed-on: https://review.gerrithub.io/362445
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
