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[80.39.142.219]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4854b5f6bb4sm163645335e9.4.2026.03.12.17.43.08 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 12 Mar 2026 17:43:08 -0700 (PDT) Message-ID: <8491dc36-0e80-4c2a-bb89-4a8cdcaa3a79@gmail.com> Date: Fri, 13 Mar 2026 01:43:08 +0100 Precedence: bulk X-Mailing-List: dm-devel@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Subject: Re: [PATCH 0/1] pr: add alua path checker To: Brian Bunker , Martin Wilck , Benjamin Marzinski , DM-DEVEL ML References: <20260312001642.53321-1-brian@purestorage.com> Content-Language: en-US, en-GB, es-ES From: Xose Vazquez Perez In-Reply-To: <20260312001642.53321-1-brian@purestorage.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 3/12/26 1:16 AM, Brian Bunker wrote: > For ALUA-capable storage arrays, multipath-tools currently uses TUR > (Test Unit Ready) as the default path checker while a separate > prioritizer determines ALUA state. When sysfs provides ALUA state > (the common case), no RTPG command is needed for priority. However, > if sysfs is unavailable or detect_prio is off, the prioritizer issues > RTPG, resulting in two SCSI commands per path check cycle: TUR + RTPG. prio/checker changes should be documented in multipath/multipath.conf.5.in Thanks.