From: Kevin Wolf <kwolf@redhat.com>
To: Eric Blake <eblake@redhat.com>
Cc: qemu-block@nongnu.org, hreitz@redhat.com, stefanha@redhat.com,
pkrempa@redhat.com, peterx@redhat.com, farosas@suse.de,
qemu-devel@nongnu.org
Subject: Re: [PATCH v2 03/15] migration/block-active: Remove global active flag
Date: Tue, 4 Feb 2025 16:50:38 +0100 [thread overview]
Message-ID: <Z6I3Th0jMdVvmEeo@redhat.com> (raw)
In-Reply-To: <w4os6ygobpsglo4h4a6gmg35sv4wzqvww4jzviqsjwwmjdywvh@nzdyfj3ybiar>
Am 30.01.2025 um 20:50 hat Eric Blake geschrieben:
> On Thu, Jan 30, 2025 at 06:12:34PM +0100, Kevin Wolf wrote:
> > Block devices have an individual active state, a single global flag
> > can't cover this correctly. This becomes more important as we allow
> > users to manually manage which nodes are active or inactive.
> >
> > Now that it's allowed to call bdrv_inactivate_all() even when some
> > nodes are already inactive, we can remove the flag and just
>
> Is this commit out of order with 5/15 that removes the assertion
> failure for inactivating an already-inactive device?
It is. Looks like I moved things around a bit too much in this series.
5/15 doesn't seem to depend on anything else,m so I'll move it before
this one to fix the ordering.
Kevin
> But in the long run, the sentiment is correct, even if the wording is
> inaccurate for a window of a couple of patches, so I'm not sure it is
> worth a slight rewording to s/it's allows/it will soon be allowed/.
>
> > unconditionally call bdrv_inactivate_all() and, more importantly,
> > bdrv_activate_all() before we make use of the nodes.
> >
> > Signed-off-by: Kevin Wolf <kwolf@redhat.com>
> > ---
> > migration/migration.h | 3 ---
> > migration/block-active.c | 46 ----------------------------------------
> > migration/migration.c | 8 -------
> > 3 files changed, 57 deletions(-)
> >
>
> Reviewed-by: Eric Blake <eblake@redhat.com>
>
> --
> Eric Blake, Principal Software Engineer
> Red Hat, Inc.
> Virtualization: qemu.org | libguestfs.org
>
next prev parent reply other threads:[~2025-02-04 15:51 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-30 17:12 [PATCH v2 00/15] block: Managing inactive nodes (QSD migration) Kevin Wolf
2025-01-30 17:12 ` [PATCH v2 01/15] block: Add 'active' field to BlockDeviceInfo Kevin Wolf
2025-01-30 19:30 ` Eric Blake
2025-02-03 18:47 ` Stefan Hajnoczi
2025-01-30 17:12 ` [PATCH v2 02/15] block: Inactivate external snapshot overlays when necessary Kevin Wolf
2025-01-30 19:46 ` Eric Blake
2025-02-03 18:48 ` Stefan Hajnoczi
2025-01-30 17:12 ` [PATCH v2 03/15] migration/block-active: Remove global active flag Kevin Wolf
2025-01-30 19:50 ` Eric Blake
2025-02-04 15:50 ` Kevin Wolf [this message]
2025-02-03 18:49 ` Stefan Hajnoczi
2025-01-30 17:12 ` [PATCH v2 04/15] block: Don't attach inactive child to active node Kevin Wolf
2025-01-30 20:08 ` Eric Blake
2025-02-03 18:50 ` Stefan Hajnoczi
2025-01-30 17:12 ` [PATCH v2 05/15] block: Allow inactivating already inactive nodes Kevin Wolf
2025-01-30 20:09 ` Eric Blake
2025-02-03 18:51 ` Stefan Hajnoczi
2025-01-30 17:12 ` [PATCH v2 06/15] block: Fix crash on block_resize on inactive node Kevin Wolf
2025-01-30 20:11 ` Eric Blake
2025-02-03 18:52 ` Stefan Hajnoczi
2025-01-30 17:12 ` [PATCH v2 07/15] block: Add option to create inactive nodes Kevin Wolf
2025-01-30 20:17 ` Eric Blake
2025-02-03 18:53 ` Stefan Hajnoczi
2025-01-30 17:12 ` [PATCH v2 08/15] block: Add blockdev-set-active QMP command Kevin Wolf
2025-01-30 20:22 ` Eric Blake
2025-02-03 18:54 ` Stefan Hajnoczi
2025-01-30 17:12 ` [PATCH v2 09/15] block: Support inactive nodes in blk_insert_bs() Kevin Wolf
2025-01-30 20:26 ` Eric Blake
2025-02-03 18:55 ` Stefan Hajnoczi
2025-01-31 9:50 ` [PATCH v2 10/15] block/export: Don't ignore image activation error in blk_exp_add() Kevin Wolf
2025-02-03 16:30 ` Eric Blake
2025-02-03 18:58 ` Stefan Hajnoczi
2025-02-04 15:54 ` Kevin Wolf
2025-01-31 9:50 ` [PATCH v2 11/15] block/export: Add option to allow export of inactive nodes Kevin Wolf
2025-01-31 13:41 ` Fabiano Rosas
2025-02-04 15:44 ` Kevin Wolf
2025-02-03 19:12 ` Eric Blake
2025-02-03 19:17 ` Stefan Hajnoczi
2025-01-31 9:50 ` [PATCH v2 12/15] nbd/server: Support " Kevin Wolf
2025-02-03 19:17 ` Eric Blake
2025-02-03 19:19 ` Stefan Hajnoczi
2025-02-04 17:10 ` Kevin Wolf
2025-01-31 9:50 ` [PATCH v2 13/15] iotests: Add filter_qtest() Kevin Wolf
2025-02-03 19:19 ` Eric Blake
2025-01-31 9:50 ` [PATCH v2 14/15] iotests: Add qsd-migrate case Kevin Wolf
2025-02-03 19:35 ` Eric Blake
2025-02-03 21:09 ` Kevin Wolf
2025-01-31 9:50 ` [PATCH v2 15/15] iotests: Add (NBD-based) tests for inactive nodes Kevin Wolf
2025-02-03 19:49 ` Eric Blake
2025-02-04 16:30 ` Kevin Wolf
2025-01-31 13:53 ` [PATCH v2 00/15] block: Managing inactive nodes (QSD migration) Fabiano Rosas
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