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From: David Gibson <david@gibson.dropbear.id.au>
To: Stefano Brivio <sbrivio@redhat.com>
Cc: passt-dev@passt.top
Subject: Re: [PATCH v4 6/8] flow, tcp: Basic pre-migration source handler to dump sequence numbers
Date: Tue, 4 Feb 2025 14:43:07 +1100	[thread overview]
Message-ID: <Z6GMy59bUQFRuEU0@zatzit> (raw)
In-Reply-To: <20250204004745.97854-7-sbrivio@redhat.com>

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On Tue, Feb 04, 2025 at 01:47:43AM +0100, Stefano Brivio wrote:
> Very much draft quality, but it works. Ask passt-repair to switch
> TCP sockets to repair mode and dump their current sequence numbers to
> the flow table, which will be transferred and used by the target in
> the next step.

[snip]
> @@ -268,6 +270,7 @@ void migrate_close(struct ctx *c)
>  {
>  	if (c->device_state_fd != -1) {
>  		debug("Closing migration channel, fd: %d", c->device_state_fd);
> +		epoll_del(c, c->device_state_fd);

You have a stray revert hunks here again which breaks things horribly.
And therefore makes me not confident that I'm actually testing the
same code you are.

>  		close(c->device_state_fd);
>  		c->device_state_fd = -1;
>  		c->device_state_result = -1;
> @@ -282,14 +285,12 @@ void migrate_close(struct ctx *c)
>   */
>  void migrate_request(struct ctx *c, int fd, bool target)
>  {
> -	debug("Migration requested, fd: %d (was %d)",
> -	      fd, c->device_state_fd);
> +	debug("Migration requested, fd: %d", c->device_state_fd);
>  
>  	if (c->device_state_fd != -1)
>  		migrate_close(c);
>  
>  	c->device_state_fd = fd;
> -	c->migrate_target = target;

And here.

-- 
David Gibson (he or they)	| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you, not the other way
				| around.
http://www.ozlabs.org/~dgibson

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  reply	other threads:[~2025-02-04  3:43 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-02-04  0:47 [PATCH v4 0/8] Draft, incomplete series introducing state migration Stefano Brivio
2025-02-04  0:47 ` [PATCH v4 1/8] flow_table: Use size in extern declaration for flowtab, export hash table Stefano Brivio
2025-02-04  0:47 ` [PATCH v4 2/8] Introduce facilities for guest migration on top of vhost-user infrastructure Stefano Brivio
2025-02-04  0:47 ` [PATCH v4 3/8] migrate: Make more handling common rather than vhost-user specific Stefano Brivio
2025-02-04  0:47 ` [PATCH v4 4/8] migrate: Don't handle the migration channel through epoll Stefano Brivio
2025-02-04  0:47 ` [PATCH v4 5/8] Add interfaces and configuration bits for passt-repair Stefano Brivio
2025-02-04  0:47 ` [PATCH v4 6/8] flow, tcp: Basic pre-migration source handler to dump sequence numbers Stefano Brivio
2025-02-04  3:43   ` David Gibson [this message]
2025-02-04  6:44     ` Stefano Brivio
2025-02-05  0:58       ` David Gibson
2025-02-04  0:47 ` [PATCH v4 7/8] vhost_user: Make source quit after reporting migration state Stefano Brivio
2025-02-04  0:47 ` [PATCH v4 8/8] Implement target side of migration Stefano Brivio
2025-02-04  6:01 ` [PATCH v4 0/8] Draft, incomplete series introducing state migration David Gibson
2025-02-04  6:48   ` Stefano Brivio

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