From: John Garry <john.g.garry@oracle.com>
To: Jens Axboe <axboe@kernel.dk>,
Luis Chamberlain <mcgrof@kernel.org>,
Vincent Fu <vincent.fu@samsung.com>
Cc: fio@vger.kernel.org, martin.petersen@oracle.com,
djwong@kernel.org, Pankaj Raghav <p.raghav@samsung.com>,
Daniel Gomez <da.gomez@samsung.com>,
Dan Helmick <dan.helmick@samsung.com>
Subject: Re: [PATCH 0/7] fio: atomic write support
Date: Mon, 9 Sep 2024 21:20:01 +0100 [thread overview]
Message-ID: <2c77d05d-e1aa-4a26-80e0-4ce6f2b50524@oracle.com> (raw)
In-Reply-To: <8e15be46-75af-4d3e-ac75-8c38ec179b0c@kernel.dk>
On 09/09/2024 20:48, Jens Axboe wrote:
> On 9/9/24 2:12 AM, John Garry wrote:
>> On 07/09/2024 00:29, Luis Chamberlain wrote:
>>> On Fri, Sep 06, 2024 at 04:22:24PM +0100, John Garry wrote:
>>>> However, if we have multiple jobs, they may overwrite blocks from other jobs
>>>> - fio warns us about that. As such, in verify mode, the read sequence number
>>>> may not match was we were expecting with multiple jobs running.
>>> Is that a generic bug in fio?
>>
>> I wouldn't say so. That is just how the verify mode works.
>
> It is, and it's quite possible to craft a job that won't verify (even
> though fio warns you about it, as you said). If you have separate IO
> threads stomping on each others writes, it won't verify. That's mostly a
> "doctor it hurts when I..." situation.
>
> FWIW, Luis, your email gets marked as spam. I think you need to check
> settings. I only see John's replies.
>
Good, so it's not just me (not receiving them properly).
next prev parent reply other threads:[~2024-09-09 20:20 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-29 12:31 [PATCH 0/7] fio: atomic write support John Garry
2024-08-29 12:31 ` [PATCH 1/7] os-linux: Renumber RWF_UNCACHED John Garry
2024-08-29 13:16 ` Jens Axboe
2024-08-29 12:31 ` [PATCH 2/7] os-linux: Define RWF_ATOMIC John Garry
2024-08-29 12:31 ` [PATCH 3/7] os: Reintroduce atomic write support John Garry
2024-08-29 12:31 ` [PATCH 4/7] verify: Ignore sequence number errors for atomic writes John Garry
2024-08-29 12:31 ` [PATCH 5/7] pvsync2: Support RWF_ATOMIC John Garry
2024-08-29 12:31 ` [PATCH 6/7] libaio: " John Garry
2024-08-29 12:31 ` [PATCH 7/7] io_uring: " John Garry
2024-09-05 9:37 ` [PATCH 0/7] fio: atomic write support Luis Chamberlain
2024-09-06 15:22 ` John Garry
2024-09-06 23:29 ` Luis Chamberlain
2024-09-09 8:12 ` John Garry
2024-09-09 19:48 ` Jens Axboe
2024-09-09 20:20 ` John Garry [this message]
2024-09-09 21:03 ` Luis Chamberlain
2024-09-09 19:53 ` Jens Axboe
2024-09-09 20:28 ` John Garry
2024-09-10 1:01 ` Jens Axboe
2024-09-10 10:03 ` John Garry
2024-09-10 15:56 ` Jens Axboe
2024-09-10 16:38 ` John Garry
2024-09-10 16:56 ` Jens Axboe
2024-09-10 17:17 ` John Garry
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