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From: Roman Kagan <rvkagan@yandex-team.ru>
To: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Cc: kwolf@redhat.com, qemu-block@nongnu.org, qemu-devel@nongnu.org,
	mreitz@redhat.com, den@openvz.org
Subject: Re: [PATCH 02/14] block/nbd: nbd_co_establish_connection(): drop unused errp
Date: Wed, 7 Apr 2021 14:28:49 +0300	[thread overview]
Message-ID: <YG2XcSb86J/XprGx@rvkaganb.lan> (raw)
In-Reply-To: <20210407104637.36033-3-vsementsov@virtuozzo.com>

On Wed, Apr 07, 2021 at 01:46:25PM +0300, Vladimir Sementsov-Ogievskiy wrote:
> We are going to refactor connection logic to make it more
> understandable. Every bit that we can simplify in advance will help.
> Drop errp for now, it's unused anyway. We'll probably reimplement it in
> future.

Although I agree that this passing errors around is a bit of an
overkill, my problem with NBD client is that it's notoriously silent
about problems it expeirences, and those errors never pop up in logs.

Given that these errors are not guest-triggerable, and probably indicate
serious problems at the infrastructure level, instead of endlessly
passing them around (as in the code ATM) or dropping them on the floor
(as you propose in the patch) I'd much rather log them immediately when
encountering.

I have a patch to that end, I'll try to port it on top of your series.

Thanks,
Roman.


  reply	other threads:[~2021-04-07 11:29 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-07 10:46 [PATCH 00/14] nbd: move reconnect-thread to separate file Vladimir Sementsov-Ogievskiy
2021-04-07 10:46 ` [PATCH 01/14] block/nbd: BDRVNBDState: drop unused connect_err Vladimir Sementsov-Ogievskiy
2021-04-07 11:13   ` Roman Kagan
2021-04-07 10:46 ` [PATCH 02/14] block/nbd: nbd_co_establish_connection(): drop unused errp Vladimir Sementsov-Ogievskiy
2021-04-07 11:28   ` Roman Kagan [this message]
2021-04-07 10:46 ` [PATCH 03/14] block/nbd: drop unused NBDConnectThread::err field Vladimir Sementsov-Ogievskiy
2021-04-07 11:42   ` Roman Kagan
2021-04-07 11:55     ` Vladimir Sementsov-Ogievskiy
2021-04-07 10:46 ` [PATCH 04/14] block/nbd: split connect_thread_cb() out of connect_thread_func() Vladimir Sementsov-Ogievskiy
2021-04-07 10:46 ` [PATCH 05/14] block/nbd: rename NBDConnectThread to NBDConnectCB Vladimir Sementsov-Ogievskiy
2021-04-07 10:46 ` [PATCH 06/14] block/nbd: further segregation of connect-thread Vladimir Sementsov-Ogievskiy
2021-04-08 10:44   ` Roman Kagan
2021-04-07 10:46 ` [PATCH 07/14] block/nbd: drop nbd_free_connect_thread() Vladimir Sementsov-Ogievskiy
2021-04-07 10:46 ` [PATCH 08/14] block/nbd: move nbd connect-thread to nbd/client-connect.c Vladimir Sementsov-Ogievskiy
2021-04-07 10:46 ` [PATCH 09/14] block/nbd: NBDConnectCB: drop bh_* fields Vladimir Sementsov-Ogievskiy
2021-04-07 10:46 ` [PATCH 10/14] block/nbd: move wait_connect field under mutex protection Vladimir Sementsov-Ogievskiy
2021-04-07 10:46 ` [PATCH 11/14] block/nbd: refactor connect_bh() Vladimir Sementsov-Ogievskiy
2021-04-07 10:46 ` [PATCH 12/14] block/nbd: refactor nbd_co_establish_connection Vladimir Sementsov-Ogievskiy
2021-04-07 10:46 ` [PATCH 13/14] block/nbd: nbd_co_establish_connection_cancel(): rename wake to do_wake Vladimir Sementsov-Ogievskiy
2021-04-07 10:46 ` [PATCH 14/14] block/nbd: drop thr->state Vladimir Sementsov-Ogievskiy
2021-04-08 10:03 ` DROP THIS Re: [PATCH 00/14] nbd: move reconnect-thread to separate file Vladimir Sementsov-Ogievskiy

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