From: Max Gurtovoy <mgurtovoy@nvidia.com>
To: Christoph Hellwig <hch@lst.de>
Cc: kbusch@kernel.org, sagi@grimberg.me,
linux-nvme@lists.infradead.org, oren@nvidia.com,
israelr@nvidia.com, dwagner@suse.de, oevron@nvidia.com
Subject: Re: [PATCH 5/8] nvme: sync the namespace scanning during ctrl start
Date: Wed, 24 Jan 2024 02:47:30 +0200 [thread overview]
Message-ID: <f168e3d8-ddec-46cd-a032-2ca771b6cd23@nvidia.com> (raw)
In-Reply-To: <20240123090231.GD30773@lst.de>
On 23/01/2024 11:02, Christoph Hellwig wrote:
> On Mon, Jan 22, 2024 at 04:56:56PM +0200, Max Gurtovoy wrote:
>> From: Ori Evron <oevron@nvidia.com>
>>
>> The namespace identifiers may change during the re-connection flow.
>
> How?
>
for example if a the PI was supported on the port before re-connection
and wasn't supported after the re-connection.
We must first identify the namespace format/identifiers before kicking
the old requests (otherwise we will get IO errors).
We must make sure that the identifiers are equal to the ns_head
identifiers (otherwise we will remove the path from mpath and allocate a
new ns_head).
maybe it will be simpler to reproduce if the namespace uuid/nguid change
after re-connection (I didn't test this scenario)
next prev parent reply other threads:[~2024-01-24 0:48 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-22 14:56 [PATCH v1 0/8] Enforce uniform metadata settings for ns head Max Gurtovoy
2024-01-22 14:56 ` [PATCH 1/8] nvme: use Independent ID-NS only for unknown cmd sets Max Gurtovoy
2024-01-23 8:58 ` Christoph Hellwig
2024-01-22 14:56 ` [PATCH 2/8] nvme: set uniform metadata settings for ns head Max Gurtovoy
2024-01-23 9:01 ` Christoph Hellwig
2024-01-22 14:56 ` [PATCH 3/8] nvme: allocate a new namespace if validation fail Max Gurtovoy
2024-01-23 9:02 ` Christoph Hellwig
2024-01-22 14:56 ` [PATCH 4/8] nvme: add nvme_queue_scan_sync helper Max Gurtovoy
2024-01-22 14:56 ` [PATCH 5/8] nvme: sync the namespace scanning during ctrl start Max Gurtovoy
2024-01-23 9:02 ` Christoph Hellwig
2024-01-24 0:47 ` Max Gurtovoy [this message]
2024-01-24 9:48 ` Christoph Hellwig
2024-01-24 10:23 ` Max Gurtovoy
2024-01-25 14:41 ` Christoph Hellwig
2024-01-25 15:55 ` Max Gurtovoy
2024-01-29 10:48 ` Sagi Grimberg
2024-01-29 12:37 ` Max Gurtovoy
2024-01-31 12:40 ` Sagi Grimberg
2024-01-31 13:10 ` Christoph Hellwig
2024-01-24 12:58 ` Sagi Grimberg
2024-01-24 13:04 ` Max Gurtovoy
2024-01-24 13:10 ` Sagi Grimberg
2024-01-24 13:17 ` Max Gurtovoy
2024-01-24 13:54 ` Sagi Grimberg
2024-01-24 14:15 ` Max Gurtovoy
2024-01-22 14:56 ` [PATCH 6/8] nvme-rdma: Fix transfer length when write_generate/read_verify are 0 Max Gurtovoy
2024-01-23 9:02 ` Christoph Hellwig
2024-01-22 14:56 ` [PATCH 7/8] nvme-fabrics: add option to disallow T10-PI offload Max Gurtovoy
2024-01-22 15:13 ` Daniel Wagner
2024-01-22 15:17 ` Max Gurtovoy
2024-01-22 15:27 ` Daniel Wagner
2024-01-22 15:28 ` Daniel Wagner
2024-01-23 9:04 ` Christoph Hellwig
2024-02-01 10:40 ` Israel Rukshin
[not found] ` <fdd1c81f-caf3-4f34-96e8-f4d8ffc26203@nvidia.com>
2024-02-13 7:16 ` Christoph Hellwig
2024-01-22 14:56 ` [PATCH 8/8] nvme-rdma: enable user " Max Gurtovoy
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