Am 26.07.24 um 17:38 schrieb Eric Blake:
> On Fri, Jul 26, 2024 at 04:16:41PM GMT, Fiona Ebner wrote:
>> Hi,
>>
>> sorry if I'm missing the obvious, but is there a way to get the dirty
>> areas according to a dirty bitmap via QMP? I mean as something like
>>
Hi,
sorry if I'm missing the obvious, but is there a way to get the dirty
areas according to a dirty bitmap via QMP? I mean as something like
offset + size + dirty-flag triples. In my case, the bitmap is also
exported via NBD, so same question for qemu-nbd being the client.
I can get the info wit
t ../block/io.c:2474
> #12 0x6152853f2016 in bdrv_co_common_block_status_above (...) at
> ../block/io.c:2652
> #13 0x6152853f22cf in bdrv_co_block_status_above (...) at
> ../block/io.c:2732
> #14 0x6152853d9a86 in blk_co_block_status_above (...) at
> ../block/block-backend
t ../block/io.c:2474
> #12 0x6152853f2016 in bdrv_co_common_block_status_above (...) at
> ../block/io.c:2652
> #13 0x6152853f22cf in bdrv_co_block_status_above (...) at
> ../block/io.c:2732
> #14 0x6152853d9a86 in blk_co_block_status_above (...) at
> ../block/bl
um cluster size used for block-copy operations and thus in
particular also the granularity for discard requests to the source.
Fiona Ebner (2):
copy-before-write: allow specifying minimum cluster size
backup: add minimum cluster size to performance options
block/backup.c | 2 +-
b
ulation
in block_copy_calculate_cluster_size() is done in the target int64_t
type.
Suggested-by: Vladimir Sementsov-Ogievskiy
Acked-by: Markus Armbruster (QAPI schema)
Signed-off-by: Fiona Ebner
---
Changes in v3:
* Pass min_cluster_size option directly without checking
has_min_cluster_size, because the de
Armbruster (QAPI schema)
Signed-off-by: Fiona Ebner
---
Changes in v3:
* Use PRI{i,u}64 macros
* Do not leak qdict in error case
block/backup.c| 2 +-
block/copy-before-write.c | 9 +
block/copy-before-write.h | 1 +
blockdev.c| 3 +++
qapi/block-core.json
Hi,
we got a user report about bootindex for an 'usb-storage' device not
working anymore [0] and I reproduced it and bisected it to this patch.
Am 31.01.24 um 14:06 schrieb Kevin Wolf:
> @@ -399,11 +397,10 @@ SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus,
> BlockBackend *blk,
> object_
Ping
Am 21.05.24 um 14:20 schrieb Fiona Ebner:
> Changes from v3 (discussion here [3]):
> * Improve/fix QAPI documentation.
>
> Changes from v2 (discussion here [2]):
> * Cluster size caveats only apply to non-COW diff image, adapt the
> cluster size check and documentation a
Am 04.06.24 um 17:28 schrieb Kevin Wolf:
> Am 04.06.2024 um 09:58 hat Fiona Ebner geschrieben:
>> Am 03.06.24 um 18:21 schrieb Kevin Wolf:
>>> Am 03.06.2024 um 16:17 hat Fiona Ebner geschrieben:
>>>> Am 26.03.24 um 13:44 schrieb Kevin Wolf:
>>>>>
>
Signed-off-by: Fiona Ebner
---
An alternative would be to detect whether the argument list is 'void'
in FuncDecl's __init__, assign the empty list to self.args there and
special case based on that in the rest of the code.
Not super happy about the introduction of the 'void_v
Am 03.06.24 um 18:21 schrieb Kevin Wolf:
> Am 03.06.2024 um 16:17 hat Fiona Ebner geschrieben:
>> Am 26.03.24 um 13:44 schrieb Kevin Wolf:
>>>
>>> The fix for bdrv_flush_all() is probably to make it bdrv_co_flush_all()
>>> with a coroutine wrapper so that
Am 28.05.24 um 18:06 schrieb Kevin Wolf:
> Am 29.04.2024 um 16:19 hat Fiona Ebner geschrieben:
>> rather than the uint32_t for which the maximum is slightly more than 4
>> seconds and larger values would overflow. The QAPI interface allows
>> specifying the number of seconds,
Hi Kevin,
Am 26.03.24 um 13:44 schrieb Kevin Wolf:
> Am 22.03.2024 um 10:50 hat Fiona Ebner geschrieben:
>> The old_bs variable in bdrv_next() is currently determined by looking
>> at the old block backend. However, if the block graph changes before
>> the next bdrv_next() c
CC-ing stable since 1f25c172f83704e350c0829438d832384084a74d is in 9.0.0
Am 06.05.24 um 21:06 schrieb Stefan Hajnoczi:
> Commit 1f25c172f837 ("monitor: use aio_co_reschedule_self()") was a code
> cleanup that uses aio_co_reschedule_self() instead of open coding
> coroutine rescheduling.
>
> Bug R
Hi,
Am 28.05.24 um 20:19 schrieb Jin Cao:
> Hi Ilya
>
> On 5/28/24 11:13 AM, Ilya Dryomov wrote:
>> On Mon, May 27, 2024 at 9:06 PM Jin Cao wrote:
>>>
>>> Supplementary info: VM is paused after "migrate" command. After being
>>> resumed with "cont", snapshot_delete_blkdev_internal works again, w
ulation
in block_copy_calculate_cluster_size() is done in the target int64_t
type.
Suggested-by: Vladimir Sementsov-Ogievskiy
Signed-off-by: Fiona Ebner
---
Changes in v2:
* Use 'size' type in QAPI.
* Remove option in cbw_parse_options(), i.e. before parsing generic
blockdev options.
block/block
and thus effectively ignore then.
To make @discard-source work in such a scenario, allow specifying the
minimum cluster size used for block-copy operations and thus in
particular also the granularity for discard requests to the source.
Suggested-by: Vladimir Sementsov-Ogievskiy
Signed-off-by: Fiona
cular also the granularity for discard requests to the source.
Fiona Ebner (2):
copy-before-write: allow specifying minimum cluster size
backup: add minimum cluster size to performance options
block/backup.c | 2 +-
block/block-copy.c | 22 ++
block/c
l.org/qemu-devel/20240307134711.709816-1-f.eb...@proxmox.com/
[3]:
https://lore.kernel.org/qemu-devel/20240510131647.1256467-1-f.eb...@proxmox.com/
Fabian Grünbichler (1):
iotests: add test for bitmap mirror
Fiona Ebner (3):
qapi/block-core: avoid the re-use of MirrorSyncMode for backup
bl
t rid of bitmap mode parameter
use caller-provided bitmap as working bitmap
turn bitmap parameter experimental]
Signed-off-by: Fiona Ebner
Acked-by: Markus Armbruster
---
block/mirror.c | 80 +-
blockdev.c | 44
iff image use-case, simply skip
the check then.
Signed-off-by: Fiona Ebner
---
blockdev.c | 57 ++
tests/qemu-iotests/tests/mirror-bitmap | 6 +++
tests/qemu-iotests/tests/mirror-bitmap.out | 7 +++
3 files changed, 70 insertions(+)
diff --
-bitmap'
use backing files, copy-mode=write-blocking, larger cluster size]
Signed-off-by: Fiona Ebner
---
tests/qemu-iotests/tests/mirror-bitmap | 597
tests/qemu-iotests/tests/mirror-bitmap.out | 3191
2 files changed, 3788 insertions(+)
create mode 1
a clean error.
Signed-off-by: Fiona Ebner
---
block/mirror.c | 22 +++---
1 file changed, 11 insertions(+), 11 deletions(-)
diff --git a/block/mirror.c b/block/mirror.c
index c0597039a5..ca23d6ef65 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -51,7 +51,7 @@ typedef struct
introspection: query-qmp-schema no
longer reports drive-mirror and blockdev-mirror accepting @sync values
they actually reject.
Suggested-by: Vladimir Sementsov-Ogievskiy
Signed-off-by: Fiona Ebner
Acked-by: Markus Armbruster
Reviewed-by: Vladimir Sementsov-Ogievskiy
---
block/backup.c
Am 16.05.24 um 10:46 schrieb Gerd Hoffmann:
> Move the pflash_blk_write_start() call. We need the offset of the
> first data write, not the offset for the setup (number-of-bytes)
> write. Without this fix u-boot can do block writes to the first
> flash block only.
>
> While being at it drop a le
Am 26.03.24 um 10:06 schrieb Markus Armbruster:
>> @@ -365,7 +368,13 @@ BlockCopyState *block_copy_state_new(BdrvChild *source,
>> BdrvChild *target,
>>
>> GLOBAL_STATE_CODE();
>>
>> -cluster_size = block_copy_calculate_cluster_size(target->bs, errp);
>> +if (min_cluster_size && !
a clean error.
Signed-off-by: Fiona Ebner
---
New in v3.
block/mirror.c | 22 +++---
1 file changed, 11 insertions(+), 11 deletions(-)
diff --git a/block/mirror.c b/block/mirror.c
index c0597039a5..ca23d6ef65 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -51,7 +51,7
TSUP.
[0]:
https://lore.kernel.org/qemu-devel/b91dba34-7969-4d51-ba40-96a91038c...@yandex-team.ru/T/#m4ae27dc8ca1fb053e0a32cc4ffa2cfab6646805c
[1]: https://lore.kernel.org/qemu-devel/1599127031.9uxdp5h9o2.astr...@nora.none/
[2]:
https://lore.kernel.org/qemu-devel/20240307134711.709816-1-f.eb...@proxmox.com/
Fabian Gr
-bitmap'
use backing files, copy-mode=write-blocking, larger cluster size]
Signed-off-by: Fiona Ebner
---
Changes in v3:
* avoid script potentially waiting on non-existent job when
blockdev-mirror QMP command fails by asserting that there is no
error when none is expected.
* fix py
introspection: query-qmp-schema no
longer reports drive-mirror and blockdev-mirror accepting @sync values
they actually reject.
Suggested-by: Vladimir Sementsov-Ogievskiy
Signed-off-by: Fiona Ebner
Acked-by: Markus Armbruster
Reviewed-by: Vladimir Sementsov-Ogievskiy
---
Changes in v3:
* add
iff image use-case, simply skip
the check then.
Signed-off-by: Fiona Ebner
---
Changes in v3:
* detect when the target does COW and do not error out in that case
* treat ENOTSUP differently from other failure when querying the
cluster size
blockdev.c | 57 +++
t rid of bitmap mode parameter
use caller-provided bitmap as working bitmap
turn bitmap parameter experimental]
Signed-off-by: Fiona Ebner
---
Changes in v3:
* remove duplicate "use" in QAPI description
* clarify that cluster size caveats only applies to non-COW diff image
* split c
Am 07.05.24 um 14:15 schrieb Fiona Ebner:
> Am 02.04.24 um 22:14 schrieb Vladimir Sementsov-Ogievskiy:
>> On 07.03.24 16:47, Fiona Ebner wrote:
>>> +# @bitmap: The name of a bitmap to use as a working bitmap for
>>> +# sync=full mode. This argument must
Am 02.04.24 um 22:14 schrieb Vladimir Sementsov-Ogievskiy:
> On 07.03.24 16:47, Fiona Ebner wrote:
>> diff --git a/block/mirror.c b/block/mirror.c
>> index 1609354db3..5c9a00b574 100644
>> --- a/block/mirror.c
>> +++ b/block/mirror.c
>> @@ -51,7 +51,7
Am 29.04.24 um 16:36 schrieb Philippe Mathieu-Daudé:
> Hi Fiona,
>
> On 29/4/24 16:19, Fiona Ebner wrote:
>
> Not everybody uses an email client that shows the patch content just
> after the subject (your first lines wasn't making sense at first).
>
> Simply dup
() call where this is used already takes a uint64_t for
the timeout, so no change required there.
Fixes: 6db7fd1ca9 ("block/copy-before-write: implement cbw-timeout option")
Reported-by: Friedrich Weber
Signed-off-by: Fiona Ebner
---
block/copy-before-write.c | 2 +-
1 file changed, 1 inser
gt;
> Resolves: Coverity CID 1542668
> Signed-off-by: Kevin Wolf
Reviewed-by: Fiona Ebner
Thank you for the fix,
Fiona
Hi,
we have a custom block driver downstream, which currently calls
bdrv_get_info() (for its file child) in the bdrv_refresh_limits()
callback. However, with graph locking, this doesn't work anymore.
AFAICT, the reason is the following:
The block driver has a backing file option.
During initializa
ot;blockdev-add", "arguments": { "driver": "compress", "file":
> "node0", "node-name": "node1" } }
> {"execute": "block-stream", "arguments": { "job-id": "stream0", &
bdrv_flush_all() could lead to
unreferencing the wrong block driver state and an assertion failure
later.
Signed-off-by: Fiona Ebner
---
No changes in v3.
New in v2.
.../tests/stream-unaligned-prefetch | 86 +++
.../tests/stream-unaligned-prefetch.out | 5 ++
2
wanted
to have (good call :)), so include a fix for that and add the
test. I didn't notice during manual testing, because I hadn't
used a scripted QMP 'quit', so there was no race.
Fiona Ebner (3):
block-backend: fix edge case in bdrv_next() where BDS associate
)
> #8 job_do_finalize_locked (job=...)
> #9 job_exit (opaque=...)
> #10 aio_bh_poll (ctx=...)
> #11 aio_poll (ctx=..., blocking=...)
> #12 bdrv_poll_co (s=...)
> #13 bdrv_flush (bs=...)
> #14 bdrv_flush_all ()
> #15 do_vm_stop (state=..., send_stop=...)
> #16 vm_
ly anymore. Instead, rely on bdrv_next() to set
it->bs to the BDS it referenced and unreference that one in any case.
Signed-off-by: Fiona Ebner
---
New in v3.
block/block-backend.c | 11 ---
1 file changed, 4 insertions(+), 7 deletions(-)
diff --git a/block/block-backend.c b/block/bl
Changes in v2:
* Ran into another issue while writing the IO test Stefan wanted
to have (good call :)), so include a fix for that and add the
test. I didn't notice during manual testing, because I hadn't
used a scripted QMP 'quit', so there was no r
bdrv_flush_all() could lead to
unreferencing the wrong block driver state and an assertion failure
later.
Signed-off-by: Fiona Ebner
---
New in v2.
.../tests/stream-unaligned-prefetch | 86 +++
.../tests/stream-unaligned-prefetch.out | 5 ++
2 files changed, 91
ot;blockdev-add", "arguments": { "driver": "compress", "file":
> "node0", "node-name": "node1" } }
> {"execute": "block-stream", "arguments": { "job-id": "stream0", &
)
> #8 job_do_finalize_locked (job=...)
> #9 job_exit (opaque=...)
> #10 aio_bh_poll (ctx=...)
> #11 aio_poll (ctx=..., blocking=...)
> #12 bdrv_poll_co (s=...)
> #13 bdrv_flush (bs=...)
> #14 bdrv_flush_all ()
> #15 do_vm_stop (state=..., send_stop=...)
> #16 vm_shutdown ()
ot;blockdev-add", "arguments": { "driver": "compress", "file":
> "node0", "node-name": "node1" } }
> {"execute": "block-stream", "arguments": { "job-id": "stream0", &
small, they will just be aligned down in
cbw_co_pdiscard_snapshot() and thus effectively ignored.
The QAPI uses uint32 so the value will be non-negative, but still fit
into a uint64_t.
Suggested-by: Vladimir Sementsov-Ogievskiy
Signed-off-by: Fiona Ebner
---
block/block-copy.c | 17
copy operations
and in particular, discard requests to the backup source will too. If
the granularity is too small, they will just be aligned down in
cbw_co_pdiscard_snapshot() and thus effectively ignored.
Fiona Ebner (2):
copy-before-write: allow specifying minimum cluster size
backup: add
granularity is too small, they will just be aligned down in
cbw_co_pdiscard_snapshot() and thus effectively ignored.
Suggested-by: Vladimir Sementsov-Ogievskiy
Signed-off-by: Fiona Ebner
---
block/backup.c| 2 +-
block/copy-before-write.c | 2 ++
block/copy-before-write.h | 1 +
blockdev.c
eate copy_bitmap in filter node, where
> anyway two other bitmaps are created.
>
> Signed-off-by: Vladimir Sementsov-Ogievskiy
Reviewed-by: Fiona Ebner
qemu-iotests/tests/backup-discard-source
> create mode 100644 tests/qemu-iotests/tests/backup-discard-source.out
>
Tested-by: Fiona Ebner
# Copyright (c) 2022 Virtuozzo International GmbH.
> +#
Title and copyright year are wrong.
Apart from that:
Reviewed-by: Fiona Ebner
Am 28.02.24 um 15:14 schrieb Vladimir Sementsov-Ogievskiy:
> First thing that crashes on unligned access here is
> bdrv_reset_dirty_bitmap(). Correct way is to align-down the
> snapshot-discard request.
>
> Signed-off-by: Vladimir Sementsov-Ogievskiy
Reviewed-by: Fiona Ebner
card to work. Still we can't take it
> unconditionally, as it will break normal backup from RO source. So, we
> have to add a parameter and pass it thorough bdrv_open flags.
>
> Signed-off-by: Vladimir Sementsov-Ogievskiy
Reviewed-by: Fiona Ebner
Am 07.03.24 um 20:42 schrieb Vladimir Sementsov-Ogievskiy:
> On 04.03.24 14:09, Peter Krempa wrote:
>> On Mon, Mar 04, 2024 at 11:48:54 +0100, Kevin Wolf wrote:
>>> Am 28.02.2024 um 19:07 hat Vladimir Sementsov-Ogievskiy geschrieben:
On 03.11.23 18:56, Markus Armbruster wrote:
> Kevin Wolf
-Ogievskiy
Signed-off-by: Fiona Ebner
---
I felt like keeping the "Since: X.Y" as before makes the most sense as
to not lose history. Or is it necessary to change this for
BackupSyncMode (and its members) since it got a new name?
block/backup.c
team.ru/T/#m4ae27dc8ca1fb053e0a32cc4ffa2cfab6646805c
[1]: https://lore.kernel.org/qemu-devel/1599127031.9uxdp5h9o2.astr...@nora.none/
Fabian Grünbichler (1):
iotests: add test for bitmap mirror
Fiona Ebner (2):
qapi/block-core: avoid the re-use of MirrorSyncMode for backup
blockdev: mirror:
is used as
the working bitmap.
Signed-off-by: Fabian Grünbichler
Signed-off-by: Thomas Lamprecht
[FE: rebase for 9.0
adapt to changes to mirror bitmap interface
rename test from '384' to 'bitmap-sync-mirror']
Signed-off-by: Fiona Ebner
---
tests/qemu-iotests/tes
t rid of bitmap mode parameter
use caller-provided bitmap as working bitmap
turn bitmap parameter experimental]
Signed-off-by: Fiona Ebner
---
block/mirror.c | 95 --
blockdev.c | 39 +--
include/block/block_in
ly skip
the check then.
Signed-off-by: Fiona Ebner
---
blockdev.c| 19 +++
tests/qemu-iotests/tests/bitmap-sync-mirror | 6 ++
.../qemu-iotests/tests/bitmap-sync-mirror.out | 7 +++
3 files changed, 32 insertions(+)
diff --
Am 29.02.24 um 13:47 schrieb Fiona Ebner:
> Am 29.02.24 um 12:48 schrieb Vladimir Sementsov-Ogievskiy:
>> On 29.02.24 13:11, Fiona Ebner wrote:
>>>
>>> The iotest creates a new target image for each incremental sync which
>>> only records the diff relative t
Am 01.03.24 um 16:46 schrieb Vladimir Sementsov-Ogievskiy:
> On 01.03.24 18:14, Fiona Ebner wrote:
>> Am 01.03.24 um 16:02 schrieb Vladimir Sementsov-Ogievskiy:
>>>>> About documentation: actually, I never liked that we use for backup
>>>>> job
>>
Am 01.03.24 um 16:02 schrieb Vladimir Sementsov-Ogievskiy:
> On 01.03.24 17:52, Fiona Ebner wrote:
>> Am 01.03.24 um 15:14 schrieb Vladimir Sementsov-Ogievskiy:
>>>
>>> As we already understood, (block-)job-api needs some spring-cleaning.
>>> Unfortunately I don
Am 01.03.24 um 15:14 schrieb Vladimir Sementsov-Ogievskiy:
>
> As we already understood, (block-)job-api needs some spring-cleaning.
> Unfortunately I don't have much time on it, but still I decided to start
> from finally depreacting block-job-* API and moving to job-*.. Probably
> bitmap/bitmap-
Am 29.02.24 um 13:00 schrieb Vladimir Sementsov-Ogievskiy:
>
> But anyway, this all could be simply achieved with
> bitmap-copying/merging API, if we allow to pass user-given bitmap to the
> mirror as working bitmap.
>
>>
>> I see, I'll drop the 'bitmap-mode' in the next version if nobody
>> comp
Am 29.02.24 um 12:48 schrieb Vladimir Sementsov-Ogievskiy:
> On 29.02.24 13:11, Fiona Ebner wrote:
>>
>> The iotest creates a new target image for each incremental sync which
>> only records the diff relative to the previous mirror and those diff
>> images are later reb
Am 28.02.24 um 17:24 schrieb Vladimir Sementsov-Ogievskiy:
> On 16.02.24 13:55, Fiona Ebner wrote:
>> Previous discussion from when this was sent upstream [0] (it's been a
>> while). I rebased the patches and re-ordered and squashed like
>> suggested back then [1].
>
Am 28.02.24 um 17:06 schrieb Vladimir Sementsov-Ogievskiy:
> On 28.02.24 19:00, Vladimir Sementsov-Ogievskiy wrote:
>> On 16.02.24 13:55, Fiona Ebner wrote:
>>> Now, the IO test added in patch 4/4 actually contains yet another use
>>> case, namely doing incremental m
Am 21.02.24 um 07:55 schrieb Markus Armbruster:
>> diff --git a/qapi/block-core.json b/qapi/block-core.json
>> index ab5a93a966..ac05483958 100644
>> --- a/qapi/block-core.json
>> +++ b/qapi/block-core.json
>> @@ -2181,6 +2181,15 @@
>> # destination (all the disk, only the sectors allocated in
amprecht
[FE: rebase for 9.0
update version and formatting in QAPI]
Signed-off-by: Fiona Ebner
---
block/mirror.c | 96 --
blockdev.c | 38 +-
include/block/block_int-global-state.h | 4 +-
qapi/block-core.js
]
Signed-off-by: Fiona Ebner
---
block/mirror.c | 28 +---
blockdev.c | 29 +
2 files changed, 34 insertions(+), 23 deletions(-)
diff --git a/block/mirror.c b/block/mirror.c
index 84155b1f78..15d1c060eb 100644
--- a/block/mirror.c
+++ b/block
names like vm.command -> vm.cmd,
specifying explicit image format for rebase,
adapt to new behavior of qemu_img(),
dropping of 'status' field in output, etc.
rename test from '384' to 'bitmap-sync-mirror']
Signed-off-by: Fiona Ebner
---
tests/qem
Previous discussion from when this was sent upstream [0] (it's been a
while). I rebased the patches and re-ordered and squashed like
suggested back then [1].
This implements two new mirror modes:
- bitmap mirror mode with always/on-success/never bitmap sync mode
- incremental mirror mode as sugar
-by: Fiona Ebner
---
The original patch this was based on came from a WIP git branch and
thus has no Signed-off-by trailer from John, see [0]. I added an
Originally-by trailer for now. Let me know if I should drop that and
wait for John's Signed-off-by instead.
[0] https://lore.kernel.org
Failure was noticed when running the tests for the qcow2 image format.
Fixes: 0bd779e27e ("crypto: Introduce 'detached-header' field in
QCryptoBlockInfoLUKS")
Signed-off-by: Fiona Ebner
---
tests/qemu-iotests/198.out | 2 ++
tests/qemu-iotests/206.out | 1 +
2 files c
Am 17.01.24 um 08:23 schrieb M_O_Bz:
> Basic Info:
> 1. Issue: I got a " double free or corruption (out)", head for
> attachment debug.log for details, the debug.log print the backtrace of
> one virtual machine
> 2. Reproduce: currently I cann't destribe how to reproduce this bug,
> because it's in
Am 25.01.24 um 18:22 schrieb Vladimir Sementsov-Ogievskiy:
>
> Hmm. Taking maximum is not optimal for usual case without
> discard-source: user may want to work in smaller granularity than
> source, to save disk space.
>
> In case with discarding we have two possibilities:
>
> - either take larg
Am 24.01.24 um 16:03 schrieb Fiona Ebner:
> Am 17.01.24 um 17:07 schrieb Vladimir Sementsov-Ogievskiy:
>> Add a parameter that enables discard-after-copy. That is mostly useful
>> in "push backup with fleecing" scheme, when source is snapshot-access
>> format dr
ause we will always miss virtqueue updates in the drained section, we
> also need to poll the virtqueue once after attaching the notifiers.
>
> Buglink: https://issues.redhat.com/browse/RHEL-3934
> Signed-off-by: Hanna Czenczek
Tested-by: Fiona Ebner
Reviewed-by: Fiona Ebner
ix it by using virtio_queue_aio_attach_host_notifier_no_poll() for the
> event virtqueue.
>
> Reported-by: Fiona Ebner
> Fixes: 766aa2de0f29b657148e04599320d771c36fd126
> ("virtio-scsi: implement BlockDevOps->drained_begin()")
> Signed-off-by: Hanna Czenczek
Tested-by: Fiona Ebner
Reviewed-by: Fiona Ebner
Am 17.01.24 um 17:07 schrieb Vladimir Sementsov-Ogievskiy:
> Add a parameter that enables discard-after-copy. That is mostly useful
> in "push backup with fleecing" scheme, when source is snapshot-access
> format driver node, based on copy-before-write filter snapshot-access
> API:
>
> [guest]
ode is returned. The caller should not
> rely on errno variable.
Tested using 'sysctl kernel.io_uring_disabled=2'. Output before this
change:
> failed to init linux io_uring ring
Output after this change:
> failed to init linux io_uring ring: Operation not permitted
Signed-off-by
Am 22.01.24 um 18:52 schrieb Hanna Czenczek:
> On 22.01.24 18:41, Hanna Czenczek wrote:
>> On 05.01.24 15:30, Fiona Ebner wrote:
>>> Am 05.01.24 um 14:43 schrieb Fiona Ebner:
>>>> Am 03.01.24 um 14:35 schrieb Paolo Bonzini:
>>>>> On 1/3/24 12:40, Fiona
Am 17.01.24 um 17:07 schrieb Vladimir Sementsov-Ogievskiy:
> Add a parameter that enables discard-after-copy. That is mostly useful
> in "push backup with fleecing" scheme, when source is snapshot-access
> format driver node, based on copy-before-write filter snapshot-access
> API:
>
> [guest]
id a bit of smoke testing with some other QMP and QGA commands
and didn't find any obvious breakage, so:
Tested-by: Fiona Ebner
P.S.
Unfortunately, the patch does not solve the other issue I came across
back then [0] with snapshot_save_job_bh() being executed during a vCPU
thread'
e1", "node-name": "node3" } }
> {"execute": "blockdev-add", "arguments": { "driver": "snapshot-access",
> "file": "node3", "node-name": "snap0" } }
> {"execute": &q
Hi Vladimir,
hope I didn't miss a newer version of this series. I'm currently
evaluating fleecing backup for Proxmox downstream, so I pulled in this
series and wanted to let you know about two issues I encountered while
testing. We are still based on 8.1, but if I'm not mistaken, they are
still re
Am 05.01.24 um 14:43 schrieb Fiona Ebner:
> Am 03.01.24 um 14:35 schrieb Paolo Bonzini:
>> On 1/3/24 12:40, Fiona Ebner wrote:
>>> I'm happy to report that I cannot reproduce the CPU-usage-spike issue
>>> with the patch, but I did run into an assertion failure w
Am 03.01.24 um 14:35 schrieb Paolo Bonzini:
> On 1/3/24 12:40, Fiona Ebner wrote:
>> I'm happy to report that I cannot reproduce the CPU-usage-spike issue
>> with the patch, but I did run into an assertion failure when trying to
>> verify that it fixes my original stuck
Am 02.01.24 um 16:24 schrieb Hanna Czenczek:
>
> I’ve attached the preliminary patch that I didn’t get to send (or test
> much) last year. Not sure if it has the same CPU-usage-spike issue
> Fiona was seeing, the only functional difference is that I notify the vq
> after attaching the notifiers i
Am 18.12.23 um 15:49 schrieb Paolo Bonzini:
> On Mon, Dec 18, 2023 at 1:41 PM Fiona Ebner wrote:
>> I think it's because of nested drains, because when additionally
>> checking that the drain count is zero and only executing the loop then,
>> that issue doesn't
Am 14.12.23 um 20:53 schrieb Stefan Hajnoczi:
>
> I will still try the other approach that Hanna and Paolo have suggested.
> It seems more palatable. I will send a v2.
>
FYI, what I already tried downstream (for VirtIO SCSI):
> diff --git a/hw/scsi/virtio-scsi.c b/hw/scsi/virtio-scsi.c
> index
Am 13.12.23 um 22:15 schrieb Stefan Hajnoczi:
> But there you have it. Please let me know what you think and try your
> reproducers to see if this fixes the missing io_poll_end() issue. Thanks!
>
Thanks to you! I applied the RFC (and the series it depends on) on top
of 8.2.0-rc4 and this fixes my
Am 08.12.23 um 09:32 schrieb Kevin Wolf:
>
> I'm not involved in it myself, but the kind of theme reminds me of this
> downstream bug that Hanna analysed recently:
>
> https://issues.redhat.com/browse/RHEL-3934
>
> Does it look like the same root cause to you?
>
Thank you for the reference! Ye
Am 03.11.23 um 14:12 schrieb Fiona Ebner:
> Hi,
>
> I ran into a strange issue where guest IO would get completely stuck
> during certain block jobs a while ago and finally managed to find a
> small reproducer [0]. I'm using a VM with virtio-blk-pci (or
> virtio-scsi-pc
Am 03.11.23 um 14:12 schrieb Fiona Ebner:
> Hi,
>
> Am 30.05.23 um 18:32 schrieb Kevin Wolf:
>> From: Stefan Hajnoczi
>>
>> Detach ioeventfds during drained sections to stop I/O submission from
>> the guest. virtio-blk is no longer reliant on aio_disable_external
Am 20.10.23 um 15:52 schrieb Fiona Ebner:
> And I found that with drive-mirror, the issue during starting seems to
> manifest with the bdrv_open() call. Adding a return before it, the guest
> IO didn't get stuck in my testing, but adding a return after it, it can
> get stuck. I&#
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