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[80.39.142.219]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4854b66e3f8sm156441785e9.14.2026.03.12.14.05.19 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 12 Mar 2026 14:05:19 -0700 (PDT) Message-ID: <2fb4a070-607a-4e59-9766-e793d4af49f6@gmail.com> Date: Thu, 12 Mar 2026 22:05:18 +0100 Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Subject: Re: [PATCH 0/1] checkers: add alua path checker To: Martin Wilck , Hannes Reinecke , Brian Bunker , Benjamin Marzinski , John Garry , Wayne Berthiaume , Yanfei Chen , heyi , Nigel Hislop , NetApp RDAC team , Steven Schremmer , Martin George , Matthias Rudolph References: <20260312001642.53321-1-brian@purestorage.com> <91ed7162-719f-4ff2-9951-913fe8096f08@suse.de> Content-Language: en-US, en-GB, es-ES From: Xose Vazquez Perez Cc: DM-DEVEL ML , SCSI ML In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 3/12/26 5:48 PM, Martin Wilck wrote: > Actually, multipathd could use TUR for checking unless we receive an > event of this type. multipathd could listen to those events and then > retrieve the new device state(s) from sysfs, without sending an RTPG > command itself. > > We wouldn't switch to the alua checker by default anyway, so the > vendors that prefer the sysfs prioritizer won't be hurt even > if that doesn't work. Just one observation: currently there are ALUA arrays (NetApp E/EF, Dell Unity) where their own checker is preferred. As well as software-defined storage (Hitachi Vantara VSP One SDS Block, Linux-IO (LIO) Target) where directio must be used.