Re: [PATCH v13 09/10] stream: skip filters when writing backing file nam

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Re: [PATCH v13 09/10] stream: skip filters when writing backing file nam

From:	Vladimir Sementsov-Ogievskiy
Subject:	Re: [PATCH v13 09/10] stream: skip filters when writing backing file name to QCOW2 header
Date:	Thu, 3 Dec 2020 22:11:21 +0300
User-agent:	Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.5.0

02.12.2020 21:31, Andrey Shinkevich wrote:

Avoid writing a filter JSON file name and a filter format name to QCOW2
image when the backing file is being changed after the block stream
job. It can occur due to a concurrent commit job on the same backing
chain.
A user is still able to assign the 'backing-file' parameter for a
block-stream job keeping in mind the possible issue mentioned above.
If the user does not specify the 'backing-file' parameter, QEMU will
assign it automatically.

Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>



Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>



--
Best regards,
Vladimir

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[PATCH v13 08/10] copy-on-read: skip non-guest reads if no copy needed, (continued)
- [PATCH v13 08/10] copy-on-read: skip non-guest reads if no copy needed, Andrey Shinkevich, 2020/12/02
  - Re: [PATCH v13 08/10] copy-on-read: skip non-guest reads if no copy needed, Vladimir Sementsov-Ogievskiy, 2020/12/03
- [PATCH v13 06/10] iotests: add #310 to test bottom node in COR driver, Andrey Shinkevich, 2020/12/02
- [PATCH v13 07/10] block: include supported_read_flags into BDS structure, Andrey Shinkevich, 2020/12/02
- [PATCH v13 05/10] qapi: create BlockdevOptionsCor structure for COR driver, Andrey Shinkevich, 2020/12/02
- [PATCH v13 01/10] copy-on-read: support preadv/pwritev_part functions, Andrey Shinkevich, 2020/12/02
- [PATCH v13 03/10] copy-on-read: add filter drop function, Andrey Shinkevich, 2020/12/02
- [PATCH v13 02/10] block: add API function to insert a node, Andrey Shinkevich, 2020/12/02
- [PATCH v13 10/10] block: apply COR-filter to block-stream jobs, Andrey Shinkevich, 2020/12/02
- [PATCH v13 09/10] stream: skip filters when writing backing file name to QCOW2 header, Andrey Shinkevich, 2020/12/02
  - Re: [PATCH v13 09/10] stream: skip filters when writing backing file name to QCOW2 header, Vladimir Sementsov-Ogievskiy <=
- Re: [PATCH v13 00/10] Apply COR-filter to the block-stream permanently, Vladimir Sementsov-Ogievskiy, 2020/12/04

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