lvol: Add custom metadata page size to lvstore

Added new --md_page_size parameter to bdev_lvol_create_lvstore RPC.
It facilitates user to pick a custom md_page_size, greater than
phys_blocklen of th

lvol: Add custom metadata page size to lvstore

Added new --md_page_size parameter to bdev_lvol_create_lvstore RPC.
It facilitates user to pick a custom md_page_size, greater than
phys_blocklen of the underlying device.

This will allow functional testing of the large IU metadata changes
on 4K IU NVMe SSDs.

Change-Id: Ib1bc68ba4d5b8a7db7f2befc1f616b342c01bc0f
Signed-off-by: Atul Malakar <a.malakar@samsung.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/25304
Community-CI: Mellanox Build Bot
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-by: Ben Walker <ben@nvidia.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Community CI Samsung <spdk.community.ci.samsung@gmail.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Reviewed-by: Jim Harris <jim.harris@nvidia.com>

show more ...

bdev/lvol: add allocated clusters num in bdev_lvol_get_lvols

In case of a thin-provisioned lvol, the number of actually
allocated clusters is displayed

Change-Id: I54fdfd36009011f899b8b8934ba6b0cf1

bdev/lvol: add allocated clusters num in bdev_lvol_get_lvols

In case of a thin-provisioned lvol, the number of actually
allocated clusters is displayed

Change-Id: I54fdfd36009011f899b8b8934ba6b0cf171a9e9c
Signed-off-by: Yankun Li <yankun@staff.sina.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/25210
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-by: Jim Harris <jim.harris@samsung.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>

show more ...

bdev/lvol: fix dump_lvol and delete_lvol concurrent conflict.

Fixes #3505

Change-Id: I7cef27ffd98587dc1ac074fde58df0a7b87f62bd
Signed-off-by: Yalong Wang <wang597672534@gmail.com>
Reviewed-on: http

bdev/lvol: fix dump_lvol and delete_lvol concurrent conflict.

Fixes #3505

Change-Id: I7cef27ffd98587dc1ac074fde58df0a7b87f62bd
Signed-off-by: Yalong Wang <wang597672534@gmail.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/24681
Reviewed-by: Jim Harris <jim.harris@samsung.com>
Community-CI: Mellanox Build Bot
Reviewed-by: GangCao <gang.cao@intel.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>

show more ...

general: fix misspells and typos

Signed-off-by: Kamil Godzwon <kamilx.godzwon@intel.com>
Change-Id: Iab206ef526eb7032c6681a3145450010c91705a4
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+

general: fix misspells and typos

Signed-off-by: Kamil Godzwon <kamilx.godzwon@intel.com>
Change-Id: Iab206ef526eb7032c6681a3145450010c91705a4
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/24120
Community-CI: Mellanox Build Bot
Reviewed-by: Karol Latecki <karol.latecki@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com>
Reviewed-by: Jim Harris <jim.harris@samsung.com>

show more ...

lvol: declare g_lvol_if static

Change-Id: I9070fb9efc694dcab4c11d7c45e1eab836eff82c
Signed-off-by: Pierre Lestringant <plestringant@kalray.eu>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/

lvol: declare g_lvol_if static

Change-Id: I9070fb9efc694dcab4c11d7c45e1eab836eff82c
Signed-off-by: Pierre Lestringant <plestringant@kalray.eu>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/24270
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>

show more ...

vbdev_lvol: add lvol set external parent rpc

Added the RPC interface for the operation to set the parent external snapshot
of a lvol. Also some lvol tests have been added to check the behaviour
of t

vbdev_lvol: add lvol set external parent rpc

Added the RPC interface for the operation to set the parent external snapshot
of a lvol. Also some lvol tests have been added to check the behaviour
of the RPC.

Change-Id: I4454b1625096881ac8f4b31a7e088212c6d8b3c3
Signed-off-by: Damiano Cipriani <damiano.cipriani@suse.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/21712
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <jim.harris@samsung.com>

show more ...

vbdev_lvol: add lvol set parent rpc interface

Added the RPC interface for the operation to set the parent snapshot
of a lvol. Also some lvol tests have been added to check the behaviour
of the RPC.

vbdev_lvol: add lvol set parent rpc interface

Added the RPC interface for the operation to set the parent snapshot
of a lvol. Also some lvol tests have been added to check the behaviour
of the RPC.

Change-Id: Ib832ded1f0175b34dd560a647355f1fa3cd269bf
Signed-off-by: Damiano Cipriani <damiano.cipriani@suse.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/19306
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Jim Harris <jim.harris@samsung.com>

show more ...

vbdev_lvol: add lvol set external parent

This function is mostly a wrapper around
spdk_lvol_set_external_parent to set the parent external snapshot
of a lvol.
It also performs some operations over e

vbdev_lvol: add lvol set external parent

This function is mostly a wrapper around
spdk_lvol_set_external_parent to set the parent external snapshot
of a lvol.
It also performs some operations over external snapshot bdev.

Change-Id: Ib08358b46c9e39472df6c66264db20c412214731
Signed-off-by: Damiano Cipriani <damiano.cipriani@suse.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/21691
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <jim.harris@samsung.com>
Community-CI: Mellanox Build Bot

show more ...

bdev/lvol: add allocated clusters num in get_bdevs

In case of a thin-provisioned lvol, the number of actually
allocated clusters is displayed in driver_specific JSON.

Change-Id: I125459751c0d670284

bdev/lvol: add allocated clusters num in get_bdevs

In case of a thin-provisioned lvol, the number of actually
allocated clusters is displayed in driver_specific JSON.

Change-Id: I125459751c0d6702848b838dfff941cc786966dc
Signed-off-by: Damiano Cipriani <damiano.cipriani@suse.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/19748
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Jim Harris <jim.harris@samsung.com>
Reviewed-by: Mike Gerdts <mgerdts@nvidia.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>

show more ...

vbdev_lvol: add shallow copy status RPC

Add RPC interface to get info about a shallow copy operation,
like the total number of clusters to be copied, the
actual number of clusters copied and the res

vbdev_lvol: add shallow copy status RPC

Add RPC interface to get info about a shallow copy operation,
like the total number of clusters to be copied, the
actual number of clusters copied and the result of the operation.

Change-Id: Ic242dced7e7d1a60fdf197f0211819d3188e2fb8
Signed-off-by: Damiano Cipriani <damiano.cipriani@suse.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/19252
Reviewed-by: Jim Harris <jim.harris@samsung.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot

show more ...

vbdev_lvol: add shallow copy RPC

Add RPC interface to start a shallow copy of a read only
lvol over a given bdev. Next patch will add another RPC
to check the status of this operation.

Change-Id: I

vbdev_lvol: add shallow copy RPC

Add RPC interface to start a shallow copy of a read only
lvol over a given bdev. Next patch will add another RPC
to check the status of this operation.

Change-Id: I3b251ae2867db85b088b385562126bcf1c80e2c6
Signed-off-by: Damiano Cipriani <damiano.cipriani@suse.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/19251
Community-CI: Mellanox Build Bot
Reviewed-by: Jim Harris <jim.harris@samsung.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>

show more ...

vbdev_lvol: add shallow copy over a given bdev

This is mostly a wrapper around spdk_lvol_shallow_copy(), but it
also has the aim to create the spdk_bs_dev device from the given
bdev.

Change-Id: I18

vbdev_lvol: add shallow copy over a given bdev

This is mostly a wrapper around spdk_lvol_shallow_copy(), but it
also has the aim to create the spdk_bs_dev device from the given
bdev.

Change-Id: I180e6f64ca8025059665f99d0c507d15be61cef2
Signed-off-by: Damiano Cipriani <damiano.cipriani@suse.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/19250
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Jim Harris <jim.harris@samsung.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>

show more ...

blob: handle IO to a resized blob

When a blob is resized and is backed by a another blob like
a snapshot, then the resized blob has more number of clusters
compared to backing device. Since the blob

blob: handle IO to a resized blob

When a blob is resized and is backed by a another blob like
a snapshot, then the resized blob has more number of clusters
compared to backing device. Since the blob is thin, either
originally or as a result of creating snapshot, the IOs to
the new cluster ranges fail as there is no cluster to be looked
at in the backing. This patch introduces mechanism to handle reads
by zeroeing out the payload which is trailing beyond cluster range,
and handle writes by validating backing dev cluster range during
copy-on-write.

Change-Id: Ib204b922819775396e53ffb718e8230ebf8fa46b
Signed-off-by: Diwakar Sharma <diwakar.sharma@datacore.com>
Co-authored-by: Diwakar Sharma <diwakar.sharma@datacore.com>
Co-authored-by: Jim Harris <james.r.harris@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/22377
Community-CI: Mellanox Build Bot
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Reviewed-by: Jim Harris <jim.harris@samsung.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>

show more ...

lvol: remove size parameter from bedv_lvol_{create,resize}

This parameter was replaced with size_in_mib and was deprecated for a
long time, so it's finally time to remove it.

Signed-off-by: Konrad

lvol: remove size parameter from bedv_lvol_{create,resize}

This parameter was replaced with size_in_mib and was deprecated for a
long time, so it's finally time to remove it.

Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Change-Id: I0c753c535418b43c8a4759d9dac5825da88c8adf
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/22951
Community-CI: Mellanox Build Bot
Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <jim.harris@samsung.com>

show more ...

so_ver: increase all major versions after SPDK 24.01

To allow SO_MINOR updates on LTS for the whole year it is supported,
the major version for all components needs to be increased.
This is to preve

so_ver: increase all major versions after SPDK 24.01

To allow SO_MINOR updates on LTS for the whole year it is supported,
the major version for all components needs to be increased.
This is to prevent scenario where two versions exists with matching
versions, but conflicting ABI.
Ex. Next SPDK release adds an API call increasing the minor version,
then LTS needs just a subset of those additions.

Increasing major so version after LTS, allows the future releases
to update versions as needed. Yet allowing LTS to increase minor
version separately.

This patch:
- increases SO_VER by 1 for all components
- resets SO_MINOR to 0 for all components

Due to patch below being introduced after v24.01 code freeze,
bdev lib version should not be increased:
61623c5ca9 bdev: add spdk_bdev_io padding in place of io_submit_ch

Short reference to how the versions were changed:
MAX=$(git grep "SO_VER := " | cut -d" " -f 3 | sort -ubnr | head -1)
for((i=$MAX;i>0;i-=1)); do find . -name "Makefile" -exec \
sed -i -e "s/SO_VER := $i\$/SO_VER := $(($i+1))/g" {} +; done
find . -name "Makefile" -exec \
sed -i -e "s/SO_MINOR := .*/SO_MINOR := 0/g" {} +

Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Change-Id: I0166d6be6c17bbbf985d48b5dfcb36f1d4af1b48
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/21582
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>

show more ...

bdev/lvol: remove unused vbdev_lvs_grow()

Prior patch removed the last use of this function
that is internal to lvol module.

Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Change-Id: Ie

bdev/lvol: remove unused vbdev_lvs_grow()

Prior patch removed the last use of this function
that is internal to lvol module.

Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Change-Id: Iec9d2a9c29e627542e337672143c8b389748e493
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/20380
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Jim Harris <jim.harris@samsung.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>

show more ...

bdev/lvol: use spdk_bs_grow_live() in grow lvs RPC

This patch adds spdk_lvs_grow_live() pipes through to
spdk_bs_grow_live() and use it when
bdev_lvol_grow_lvstore RPC is called.

Growing the size o

bdev/lvol: use spdk_bs_grow_live() in grow lvs RPC

This patch adds spdk_lvs_grow_live() pipes through to
spdk_bs_grow_live() and use it when
bdev_lvol_grow_lvstore RPC is called.

Growing the size of lvs still needs to be explicit
RPC call by the user.

Moved include for blob_bdev.h to header of the whole
bdev module. This way spdk_bdev_update_bs_blockcnt()
can be called when RPC is called.

Please note that there already exists a test with this
RPC - blobstore_grow.sh. Next patch in series
adds test calling grow while I/O is being performed.

Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Change-Id: I9e896c65a8b017d0d20b77d3758901e588e9e70c
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/20322
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <jim.harris@samsung.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>

show more ...

lib, module: use spdk_json_write_named_uuid

Use spdk_json_write_named_uuid everywhere possible, instead of the older
spdk_uuid_fmt_lower+spdk_json_write_named_string approach.

Signed-off-by: Jim Ha

lib, module: use spdk_json_write_named_uuid

Use spdk_json_write_named_uuid everywhere possible, instead of the older
spdk_uuid_fmt_lower+spdk_json_write_named_string approach.

Signed-off-by: Jim Harris <jim.harris@samsung.com>
Change-Id: I75f97efb6e88fdb032f7ae94f11039457ba70f2a
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/20562
Community-CI: Mellanox Build Bot
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>

show more ...

rpc: use spdk_json_write_uuid() to dump UUIDs

While here, remove some of the empty lines between spdk_json_write*
calls, as they only made the code less readable.

Signed-off-by: Konrad Sztyber <kon

rpc: use spdk_json_write_uuid() to dump UUIDs

While here, remove some of the empty lines between spdk_json_write*
calls, as they only made the code less readable.

Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Change-Id: I22909de1a04cd24322534971daf3128776c36855
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/20473
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Jim Harris <jim.harris@samsung.com>

show more ...

lvol: add spdk_lvol_is_degraded

This is mostly a wrapper around spdk_blob_is_degraded(), but it also
performs a NULL check on lvol->blob. Since an lvol without a blob cannot
perform IO, this conditi

lvol: add spdk_lvol_is_degraded

This is mostly a wrapper around spdk_blob_is_degraded(), but it also
performs a NULL check on lvol->blob. Since an lvol without a blob cannot
perform IO, this condition returns true.

The two callers of spdk_blob_is_degraded() in vbdev_lvol.c have been
updated to use spdk_lvol_is_degraded().

Change-Id: I11dc682a26d971c8854aeab280c8199fced358c3
Signed-off-by: Mike Gerdts <mgerdts@nvidia.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/17896
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Ben Walker <benjamin.walker@intel.com>

show more ...

lvol: lvol destruction race leads to null deref

As an lvolstore is being destroyed, _vbdev_lvs_remove() starts an
interation through the lvols to delete each one, ultimately leading to
the destructi

lvol: lvol destruction race leads to null deref

As an lvolstore is being destroyed, _vbdev_lvs_remove() starts an
interation through the lvols to delete each one, ultimately leading to
the destruction of the lvolstore with a call to lvs_free(). The callback
passed to vbdev_lvs_destruct() is always called asynchronously via
spdk_io_device_unregister() in bs_free().

When the lvolstore resides on bdevs that perform async IO (i.e. most
bdevs other than malloc), this gives a small window when the lvol bdev
is not registered but a lookup with spdk_lvol_get_by_uuid() or
spdk_lvol_get_by_names() will succeed. If rpc_bdev_lvol_delete() runs
during this window, it can get a reference to an lvol that has just been
unregistered and lvol->blob may be NULL. This lvol is then passed to
vbdev_lvol_destroy().

Before this fix, vbdev_lvol_destroy() would call:

spdk_blob_is_degraded(lvol->blob);

Which would then lead to a NULL pointer dereference, as
spdk_blob_is_degraded() assumes a valid blob is passed. While a NULL
check would avoid this particular problem, a NULL blob is not
necessarily caused by the condition described above. It would better to
flag the lvstore's destruction before returning from
vbdev_lvs_destruct() and use that flag to prevent operations on the
lvolstore that is being deleted. Such a flag already exists in the form
of 'lvs_bdev->req != NULL', but that is set too late to close this race.

This fix introduces lvs_bdev->removal_in_progress which is set prior to
returning from vbdev_lvs_unload() and vbdev_lvs_destruct(). It is
checked by vbdev_lvol_destroy() before trying to destroy the lvol. Now,
any lvol destruction initiated by something other than
vbdev_lvs_destruct() while an lvolstore unload or destroy is in progress
will fail with -ENODEV.

Fixes issue: #2998

Signed-off-by: Mike Gerdts <mgerdts@nvidia.com>
Change-Id: I4d861879097703b0d8e3180e6de7ad6898f340fd
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/17891
Community-CI: Mellanox Build Bot
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>

show more ...

vbdev_lvol: esnap memdomain support

Return the total number of memory domains supported by the blobstore and
any external snapshot bdev.

Signed-off-by: Mike Gerdts <mgerdts@nvidia.com>
Change-Id: I

vbdev_lvol: esnap memdomain support

Return the total number of memory domains supported by the blobstore and
any external snapshot bdev.

Signed-off-by: Mike Gerdts <mgerdts@nvidia.com>
Change-Id: I2f8afba6b31e689b8f942e2cf36906a0a30f38c8
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/16430
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Jim Harris <james.r.harris@intel.com>

show more ...

vbdev_lvol: allow degraded lvols to be deleted

An esnap clone is now deletable when its external snapshot is missing.
Likewise, the tree of degraded lvols rooted at a degraded esnap clone
can also b

vbdev_lvol: allow degraded lvols to be deleted

An esnap clone is now deletable when its external snapshot is missing.
Likewise, the tree of degraded lvols rooted at a degraded esnap clone
can also be deleted, subject to the normal restrictions.

Signed-off-by: Mike Gerdts <mgerdts@nvidia.com>
Change-Id: I711ae25d57f5625a955d1f4cdb2839dd0a6cb095
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/17549
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>

show more ...

vbdev_lvol: load esnaps via examine_config

This introduces an examine_config callback that triggers hotplug of
missing esnap devices.

Signed-off-by: Mike Gerdts <mgerdts@nvidia.com>
Change-Id: I5ce

vbdev_lvol: load esnaps via examine_config

This introduces an examine_config callback that triggers hotplug of
missing esnap devices.

Signed-off-by: Mike Gerdts <mgerdts@nvidia.com>
Change-Id: I5ced2ff26bfd393d2df4fd4718700be30eb48063
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/16626
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>

show more ...

vbdev_lvol: degraded open of esnap clones

If an esnap clone is missing its snapshot the lvol should still open in
degraded mode. A degraded lvol will not have a bdev registered and as
such cannot pe

vbdev_lvol: degraded open of esnap clones

If an esnap clone is missing its snapshot the lvol should still open in
degraded mode. A degraded lvol will not have a bdev registered and as
such cannot perform any IO.

Change-Id: I736194650dfcf1eb78214c8896c31acc7a946b54
Signed-off-by: Mike Gerdts <mgerdts@nvidia.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/16425
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>

show more ...