From patchwork Mon Mar 27 13:24:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Wilck X-Patchwork-Id: 13189344 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2D6E1C76195 for ; Mon, 27 Mar 2023 13:27:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232730AbjC0N1W (ORCPT ); Mon, 27 Mar 2023 09:27:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34258 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232726AbjC0N1A (ORCPT ); Mon, 27 Mar 2023 09:27:00 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [IPv6:2001:67c:2178:6::1c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AEDB146B8 for ; Mon, 27 Mar 2023 06:25:46 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 073F421F48; Mon, 27 Mar 2023 13:25:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1679923514; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=qPWpNNIEQMOT6kQ1gtBA2LpRfXOfJ7h5kEDv8LsOpGc=; b=X7MPI+bxYJa7iyyI/GgfvOxPzns6z/UYG0DsCkLm/Vd5FltDVAl/LD2e3JntV/bTHTLySA JdJY0tQ6tpjZvjjwVh2piAFlECjyCo1aJCLWWCTr22mbDBW/7s3Qx7Po/HDPSaVH10HLAV Uq5P+Qr7qleaGe0ECVCUVYH4jYITP+w= Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 9FD6613329; Mon, 27 Mar 2023 13:25:13 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id oD8UJTmZIWTobgAAMHmgww (envelope-from ); Mon, 27 Mar 2023 13:25:13 +0000 From: mwilck@suse.com To: Douglas Gilbert , Hannes Reinecke Cc: "Martin K. Petersen" , James Bottomley , Franck Bui , dm-devel@redhat.com, linux-scsi@vger.kernel.org, Benjamin Marzinski , Martin Wilck Subject: [PATCH 1/3] 55-scsi-sg3_id.rules: don't set unreliable device ID by default Date: Mon, 27 Mar 2023 15:24:57 +0200 Message-Id: <20230327132459.29531-2-mwilck@suse.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230327132459.29531-1-mwilck@suse.com> References: <20230327132459.29531-1-mwilck@suse.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Martin Wilck Some of the methods to determine the SCSI device ID are known to be unreliable and, and possibly cause dm-multipath to falsely detect a multipath setup and cause data corruption. These methods will only be used if the known reliable device IDs (like NAA registered) are unavailable. Don't apply these methods by default. Make the methods to use configurable instead. Configuration is done by setting the udev property ".SCSI_ID_SERIAL_SRC" to any combination of the letters T, L, V, S: T: T10 vendor ID ("1...") L: NAA local ("33...") V: vendor-specific ("0...") S: vendor/model/serial number ("S...") The ordering of the letters in .SCSI_ID_SERIAL_SRC doesn't matter, the precedence is always T, L, V, S. Regardless of using these properties for ID_SERIAL, we can infer that if any of these properties is set, it's correct to set ID_BUS="scsi". Signed-off-by: Martin Wilck --- scripts/55-scsi-sg3_id.rules | 53 +++++++++++++++++++++++++++++++++--- 1 file changed, 49 insertions(+), 4 deletions(-) diff --git a/scripts/55-scsi-sg3_id.rules b/scripts/55-scsi-sg3_id.rules index 453210b..33b2ad3 100644 --- a/scripts/55-scsi-sg3_id.rules +++ b/scripts/55-scsi-sg3_id.rules @@ -99,11 +99,56 @@ ENV{ID_SERIAL}!="?*", ENV{SCSI_IDENT_LUN_NAA_REG}=="?*", ENV{ID_BUS}="scsi", ENV ENV{ID_SERIAL}!="?*", ENV{SCSI_IDENT_LUN_NAA_EXT}=="?*", ENV{ID_BUS}="scsi", ENV{ID_SERIAL}="3$env{SCSI_IDENT_LUN_NAA_EXT}", ENV{ID_SERIAL_SHORT}="$env{SCSI_IDENT_LUN_NAA_EXT}" ENV{ID_SERIAL}!="?*", ENV{SCSI_IDENT_LUN_EUI64}=="?*", ENV{ID_BUS}="scsi", ENV{ID_SERIAL}="2$env{SCSI_IDENT_LUN_EUI64}", ENV{ID_SERIAL_SHORT}="$env{SCSI_IDENT_LUN_EUI64}" ENV{ID_SERIAL}!="?*", ENV{SCSI_IDENT_LUN_NAME}=="?*", ENV{ID_BUS}="scsi", ENV{ID_SERIAL}="8$env{SCSI_IDENT_LUN_NAME}", ENV{ID_SERIAL_SHORT}="$env{SCSI_IDENT_LUN_NAME}" -ENV{ID_SERIAL}!="?*", ENV{SCSI_IDENT_LUN_T10}=="?*", ENV{ID_BUS}="scsi", ENV{ID_SERIAL}="1$env{SCSI_IDENT_LUN_T10}", ENV{ID_SERIAL_SHORT}="$env{SCSI_IDENT_LUN_T10}" -ENV{ID_SERIAL}!="?*", ENV{SCSI_IDENT_LUN_NAA_LOCAL}=="?*", ENV{ID_BUS}="scsi", ENV{ID_SERIAL}="3$env{SCSI_IDENT_LUN_NAA_LOCAL}", ENV{ID_SERIAL_SHORT}="$env{SCSI_IDENT_LUN_NAA_LOCAL}" -ENV{ID_SERIAL}!="?*", ENV{SCSI_IDENT_LUN_VENDOR}=="?*", ENV{ID_BUS}="scsi", ENV{ID_SERIAL}="0$env{SCSI_VENDOR}_$env{SCSI_MODEL}_$env{SCSI_IDENT_LUN_VENDOR}", ENV{ID_SERIAL_SHORT}="$env{SCSI_IDENT_LUN_VENDOR}" -ENV{ID_SERIAL}!="?*", ENV{SCSI_IDENT_SERIAL}=="?*", ENV{ID_BUS}="scsi", ENV{ID_SERIAL}="S$env{SCSI_VENDOR}_$env{SCSI_MODEL}_$env{SCSI_IDENT_SERIAL}", ENV{ID_SERIAL_SHORT}="$env{SCSI_IDENT_SERIAL}" # Compat ID_SCSI_SERIAL setting ENV{ID_SCSI_SERIAL}!="?*", ENV{SCSI_IDENT_SERIAL}=="?*", ENV{ID_SCSI_SERIAL}="$env{SCSI_IDENT_SERIAL}" + +# Enable or disable possibly ambiguous SCSI device ID sources for setting ID_SERIAL +# +# .SCSI_ID_SERIAL_SRC can be any combination of the characters "TLVS": +# T: T10 vendor ID ("1...") from VPD 0x83 +# L: NAA local ("33...") from VPD 0x83 +# V: vendor-specific ("0...") from VPD 0x83 +# S: vendor/model/serial number ("S...") from VPD 0x80 +# The ordering of the letters doesn't matter, the precedence is always T, L, V, S +# NAA (except "local") and EUI-64 IDs (see below), as well as ATA IDs, always take precedence over +# the sources configured here. +# +# This only needs to be changed if there are legacy SCSI devices that don't provide any reliable +# device identifiers, and some subsystem like multipath requires that ID_SERIAL is set. +# Be aware that multipath actually needs unique identifiers, though. +# Using ambiguous identifiers for ID_SERIAL can cause data corruption with multipath. +# +# To configure this, add an early rule (e.g. /etc/udev/rules.d/00-scsi-serial.rules) e.g. like this: +# ACTION!="remove", KERNEL=="sd*|sr*|st*|nst*|cciss*", ENV{.SCSI_ID_SERIAL_SRC}="TLVS" +# +# By default, only T10 vendor ID is allowed. +ENV{.SCSI_ID_SERIAL_SRC}!="?*", ENV{.SCSI_ID_SERIAL_SRC}="T" + +ENV{ID_SERIAL}=="?*", GOTO="sg3_utils_id_end" +ENV{SCSI_IDENT_LUN_T10}=="?*", ENV{ID_BUS}="scsi" +ENV{SCSI_IDENT_LUN_T10}=="?*", ENV{.SCSI_ID_SERIAL_SRC}=="*T*", \ + ENV{ID_SERIAL}="1$env{SCSI_IDENT_LUN_T10}", \ + ENV{ID_SERIAL_SHORT}="$env{SCSI_IDENT_LUN_T10}" + +ENV{ID_SERIAL}=="?*", GOTO="sg3_utils_id_end" +ENV{SCSI_IDENT_LUN_NAA_LOCAL}=="?*", ENV{ID_BUS}="scsi" +ENV{SCSI_IDENT_LUN_NAA_LOCAL}=="?*", ENV{.SCSI_ID_SERIAL_SRC}=="*L*", \ + ENV{ID_SERIAL}="3$env{SCSI_IDENT_LUN_NAA_LOCAL}", \ + ENV{ID_SERIAL_SHORT}="$env{SCSI_IDENT_LUN_NAA_LOCAL}" + +ENV{ID_SERIAL}=="?*", GOTO="sg3_utils_id_end" +ENV{SCSI_IDENT_LUN_VENDOR}=="?*", ENV{ID_BUS}="scsi" +ENV{SCSI_IDENT_LUN_VENDOR}=="?*", ENV{.SCSI_ID_SERIAL_SRC}=="*V*", \ + ENV{ID_SERIAL}="0$env{SCSI_VENDOR}_$env{SCSI_MODEL}_$env{SCSI_IDENT_LUN_VENDOR}", \ + ENV{ID_SERIAL_SHORT}="$env{SCSI_IDENT_LUN_VENDOR}" + +ENV{ID_SERIAL}=="?*", GOTO="sg3_utils_id_end" +ENV{SCSI_IDENT_SERIAL}=="?*", ENV{ID_BUS}="scsi" +ENV{SCSI_IDENT_SERIAL}=="?*", ENV{.SCSI_ID_SERIAL_SRC}=="*S*", \ + ENV{ID_SERIAL}="S$env{SCSI_VENDOR}_$env{SCSI_MODEL}_$env{SCSI_IDENT_SERIAL}", \ + ENV{ID_SERIAL_SHORT}="$env{SCSI_IDENT_SERIAL}" + LABEL="sg3_utils_id_end" +ENV{ID_SERIAL}!="?*", ENV{DEVTYPE}=="disk", \ + PROGRAM="/bin/logger -t 55-scsi-sg3_id.rules -p daemon.warning \"WARNING: SCSI device %k has no device ID, consider changing .SCSI_ID_SERIAL_SRC in 00-scsi-sg3_config.rules\"" From patchwork Mon Mar 27 13:24:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Wilck X-Patchwork-Id: 13189345 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0B411C7619A for ; Mon, 27 Mar 2023 13:27:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232440AbjC0N1X (ORCPT ); Mon, 27 Mar 2023 09:27:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36308 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232731AbjC0N1C (ORCPT ); Mon, 27 Mar 2023 09:27:02 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [IPv6:2001:67c:2178:6::1c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5D01961A3 for ; Mon, 27 Mar 2023 06:25:47 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 5C9D821ECF; Mon, 27 Mar 2023 13:25:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1679923514; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ttijqcen9Gc0l21GNAosmR1SMgukBqDf8b/eLoukYfg=; b=Hso0HI9lom6LOScNQbhegTg4YBOaOQPcN/ihi3xdl10TSsXslJkLRoIU4zbuVzU50hemGp yJdkFQvx6ctwlisQTl3/Ayys0z+Q7qJvAWskrb9jCvQBMARNzjwO/SKgp6EiD6yobPUTaM 6SGia6tpB1zyL2QDZjNFzYD7mv4L7ZE= Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 0AF76138ED; Mon, 27 Mar 2023 13:25:14 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id mEz3ADqZIWTobgAAMHmgww (envelope-from ); Mon, 27 Mar 2023 13:25:14 +0000 From: mwilck@suse.com To: Douglas Gilbert , Hannes Reinecke Cc: "Martin K. Petersen" , James Bottomley , Franck Bui , dm-devel@redhat.com, linux-scsi@vger.kernel.org, Benjamin Marzinski , Martin Wilck Subject: [PATCH 2/3] 58-scsi-sg3_symlink.rules: don't create extra by-id symlinks by default Date: Mon, 27 Mar 2023 15:24:58 +0200 Message-Id: <20230327132459.29531-3-mwilck@suse.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230327132459.29531-1-mwilck@suse.com> References: <20230327132459.29531-1-mwilck@suse.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Martin Wilck The current code will set device symlinks for every identifier obtained from VPD pages 0x83 and 0x80. This is seldom useful. Device IDs shouldn't be used for identifying file systems or high-level objects such as LVs; it is much more useful to identify these by their respective UUIDs. Those subsystems that need device IDs, such as LVM, multipath, dm-crypt etc, just need one identifier. For these use cases, a single symlink is sufficient, and it should be the most reliable one as selected by the ID_SERIAL logic in 55-scsi-sg3_id.rules. On the other hand, especially on large configurations, unreliable and ambiguous device identifiers can cause trouble when many devices claim the same symlink. udev's attempts to determine the highest-priority contender for a given symlink may be very resource-intensive and slow, especially during boot, when lots of uevents for similar devices have to be processed in parallel. This can cause udev workers to be killed, and in the worst case, boot failure. Avoid these issues by not creating possibly ambiguous /dev/disk/by-id symlinks any more by default. Users can modify the configuration by setting the types of symlinks to create in the environment variable .SCSI_SYMLINK_SRC, which can be a combination of the letters T, L, V, S: T: T10 vendor ID ("1...") from VPD 0x83 L: NAA local ("33...") from VPD 0x83 V: vendor-specific ("0...") from VPD 0x83 S: vendor/model/serial number ("S...") from VPD 0x80 In practice, modifying this should only be necessary if legacy devices that don't provide any reliable identifiers are used as targets for dm-crypt or LVM. Signed-off-by: Martin Wilck --- scripts/58-scsi-sg3_symlink.rules | 50 +++++++++++++++++++++++++------ 1 file changed, 41 insertions(+), 9 deletions(-) diff --git a/scripts/58-scsi-sg3_symlink.rules b/scripts/58-scsi-sg3_symlink.rules index fe6b000..99fdc23 100644 --- a/scripts/58-scsi-sg3_symlink.rules +++ b/scripts/58-scsi-sg3_symlink.rules @@ -5,10 +5,36 @@ ACTION=="remove", GOTO="sg3_utils_symlink_end" SUBSYSTEM!="block", GOTO="sg3_utils_symlink_end" ENV{UDEV_DISABLE_PERSISTENT_STORAGE_RULES_FLAG}=="1", GOTO="sg3_utils_symlink_end" -# Select which identifier to use per default +# Enable or disable possibly ambiguous SCSI device symlinks under /dev/disk/by-id +# +# .SCSI_SYMLINK_SRC can be any combination of the letter "TLVS": +# T: T10 vendor ID ("1...") from VPD 0x83 +# L: NAA local ("33...") from VPD 0x83 +# V: vendor-specific ("0...") from VPD 0x83 +# S: vendor/model/serial number ("S...") from VPD 0x80 +# Symlinks will be created for every letter included in .SCSI_SYMLINK_SRC. +# Symlinks for NAA (except "local") and EUI-64 IDs (see below) are always created. +# +# NOTE: The default rules in 60-persistent-storage.rules create a symlink +# "ENV{ID_BUS}-ENV{ID_SERIAL}" symlink anyway, where ID_BUS is "scsi", "ata", "usb", or "cciss". +# ID_SERIAL is set in 55-scsi-sg3_id.rules from the least ambiguous device identifier. +# The symlinks created by this file are created *in addition* to the default symlink. +# +# This only needs to be changed if some subsystem, like dm-crypt or LVM, depends on the +# additional symlinks being present for device identification. +# +# To configure the behavior, add an early rule (e.g. /etc/udev/rules.d/00-scsi-serial.rules) +# like this: +# ACTION!="remove", KERNEL=="sd*|sr*|st*|nst*|cciss*", ENV{.SCSI_SYMLINK_SRC}="TS" +# +# By default, no possibly ambiguous additional symlinks will be created. +ENV{.SCSI_SYMLINK_SRC}!="?*", ENV{.SCSI_SYMLINK_SRC}="" + # 0: vpd page 0x80 identifier -ENV{SCSI_IDENT_SERIAL}=="?*", ENV{DEVTYPE}=="disk", SYMLINK+="disk/by-id/scsi-S$env{SCSI_VENDOR}_$env{SCSI_MODEL}_$env{SCSI_IDENT_SERIAL}" -ENV{SCSI_IDENT_SERIAL}=="?*", ENV{DEVTYPE}=="partition", SYMLINK+="disk/by-id/scsi-S$env{SCSI_VENDOR}_$env{SCSI_MODEL}_$env{SCSI_IDENT_SERIAL}-part%n" +ENV{.SCSI_SYMLINK_SRC}=="*S*", ENV{SCSI_IDENT_SERIAL}=="?*", ENV{DEVTYPE}=="disk", \ + SYMLINK+="disk/by-id/scsi-S$env{SCSI_VENDOR}_$env{SCSI_MODEL}_$env{SCSI_IDENT_SERIAL}" +ENV{.SCSI_SYMLINK_SRC}=="*S*", ENV{SCSI_IDENT_SERIAL}=="?*", ENV{DEVTYPE}=="partition", \ + SYMLINK+="disk/by-id/scsi-S$env{SCSI_VENDOR}_$env{SCSI_MODEL}_$env{SCSI_IDENT_SERIAL}-part%n" # NAA identifier (prefix 3) # 1: IEEE Registered Extended first ENV{SCSI_IDENT_LUN_NAA_REGEXT}=="?*", ENV{DEVTYPE}=="disk", SYMLINK+="disk/by-id/scsi-3$env{SCSI_IDENT_LUN_NAA_REGEXT}" @@ -26,13 +52,19 @@ ENV{SCSI_IDENT_LUN_EUI64}=="?*", ENV{DEVTYPE}=="partition", SYMLINK+="disk/by-id ENV{SCSI_IDENT_LUN_NAME}=="?*", ENV{DEVTYPE}=="disk", SYMLINK+="disk/by-id/scsi-8$env{SCSI_IDENT_LUN_NAME}" ENV{SCSI_IDENT_LUN_NAME}=="?*", ENV{DEVTYPE}=="partition", SYMLINK+="disk/by-id/scsi-8$env{SCSI_IDENT_LUN_NAME}-part%n" # 6: T10 Vendor identifier (prefix 1) -ENV{SCSI_IDENT_LUN_T10}=="?*", ENV{DEVTYPE}=="disk", SYMLINK+="disk/by-id/scsi-1$env{SCSI_IDENT_LUN_T10}" -ENV{SCSI_IDENT_LUN_T10}=="?*", ENV{DEVTYPE}=="partition", SYMLINK+="disk/by-id/scsi-1$env{SCSI_IDENT_LUN_T10}-part%n" +ENV{.SCSI_SYMLINK_SRC}=="*T*", ENV{SCSI_IDENT_LUN_T10}=="?*", ENV{DEVTYPE}=="disk", \ + SYMLINK+="disk/by-id/scsi-1$env{SCSI_IDENT_LUN_T10}" +ENV{.SCSI_SYMLINK_SRC}=="*T*", ENV{SCSI_IDENT_LUN_T10}=="?*", ENV{DEVTYPE}=="partition", \ + SYMLINK+="disk/by-id/scsi-1$env{SCSI_IDENT_LUN_T10}-part%n" # 7: IEEE Locally assigned -ENV{SCSI_IDENT_LUN_NAA_LOCAL}=="?*", ENV{DEVTYPE}=="disk", SYMLINK+="disk/by-id/scsi-3$env{SCSI_IDENT_LUN_NAA_LOCAL}" -ENV{SCSI_IDENT_LUN_NAA_LOCAL}=="?*", ENV{DEVTYPE}=="partition", SYMLINK+="disk/by-id/scsi-3$env{SCSI_IDENT_LUN_NAA_LOCAL}-part%n" +ENV{.SCSI_SYMLINK_SRC}=="*L*", ENV{SCSI_IDENT_LUN_NAA_LOCAL}=="?*", ENV{DEVTYPE}=="disk", \ + SYMLINK+="disk/by-id/scsi-3$env{SCSI_IDENT_LUN_NAA_LOCAL}" +ENV{.SCSI_SYMLINK_SRC}=="*L*", ENV{SCSI_IDENT_LUN_NAA_LOCAL}=="?*", ENV{DEVTYPE}=="partition", \ + SYMLINK+="disk/by-id/scsi-3$env{SCSI_IDENT_LUN_NAA_LOCAL}-part%n" # 8: Vendor-specific identifier (prefix 0) -ENV{SCSI_IDENT_LUN_VENDOR}=="?*", ENV{DEVTYPE}=="disk", SYMLINK+="disk/by-id/scsi-0$env{SCSI_VENDOR}_$env{SCSI_MODEL}_$env{SCSI_IDENT_LUN_VENDOR}" -ENV{SCSI_IDENT_LUN_VENDOR}=="?*", ENV{DEVTYPE}=="partition", SYMLINK+="disk/by-id/scsi-0$env{SCSI_VENDOR}_$env{SCSI_MODEL}_$env{SCSI_IDENT_LUN_VENDOR}-part%n" +ENV{.SCSI_SYMLINK_SRC}=="*V*", ENV{SCSI_IDENT_LUN_VENDOR}=="?*", ENV{DEVTYPE}=="disk", \ + SYMLINK+="disk/by-id/scsi-0$env{SCSI_VENDOR}_$env{SCSI_MODEL}_$env{SCSI_IDENT_LUN_VENDOR}" +ENV{.SCSI_SYMLINK_SRC}=="*V*", ENV{SCSI_IDENT_LUN_VENDOR}=="?*", ENV{DEVTYPE}=="partition", \ + SYMLINK+="disk/by-id/scsi-0$env{SCSI_VENDOR}_$env{SCSI_MODEL}_$env{SCSI_IDENT_LUN_VENDOR}-part%n" LABEL="sg3_utils_symlink_end" From patchwork Mon Mar 27 13:24:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Wilck X-Patchwork-Id: 13189346 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 030ECC76195 for ; Mon, 27 Mar 2023 13:27:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232442AbjC0N1Y (ORCPT ); Mon, 27 Mar 2023 09:27:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36318 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232491AbjC0N1D (ORCPT ); Mon, 27 Mar 2023 09:27:03 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [IPv6:2001:67c:2178:6::1c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 80A3059FD for ; Mon, 27 Mar 2023 06:25:50 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id B7FFE21F4A; Mon, 27 Mar 2023 13:25:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1679923514; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=jlwV1NAdVqUf/jBBkwg4iHp6LFT18ZbI02dmD/e4ee8=; b=BC76h1YO/Lx9UotSSagrwY/zkLT05ELFW3DFjF6NUFUsQmkd7Ixtgw0qK9v79sz0xdN03f CvgFcq0/uZxWjZ57ql96Xvec+M0d8IB/G0iSTs8crZjVJhKtRJb2nKeR0zzVjshXiLxXGz HMRX5cBM6cpQ7uOnnNzCuh5De8FdjYs= Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 6869513329; Mon, 27 Mar 2023 13:25:14 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id CNDYFzqZIWTobgAAMHmgww (envelope-from ); Mon, 27 Mar 2023 13:25:14 +0000 From: mwilck@suse.com To: Douglas Gilbert , Hannes Reinecke Cc: "Martin K. Petersen" , James Bottomley , Franck Bui , dm-devel@redhat.com, linux-scsi@vger.kernel.org, Benjamin Marzinski , Martin Wilck Subject: [PATCH 3/3] udev: add 00-scsi-sg3_config.rules for user configuration Date: Mon, 27 Mar 2023 15:24:59 +0200 Message-Id: <20230327132459.29531-4-mwilck@suse.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230327132459.29531-1-mwilck@suse.com> References: <20230327132459.29531-1-mwilck@suse.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Martin Wilck Add a dedicated early rules file to simplify configuring the behavior of the SCSI udev rules shipped with sg3_utils. Signed-off-by: Martin Wilck --- Makefile.am | 1 + scripts/00-scsi-sg3_config.rules | 23 +++++++++++++++++++++++ scripts/55-scsi-sg3_id.rules | 6 ++---- scripts/58-scsi-sg3_symlink.rules | 6 +----- 4 files changed, 27 insertions(+), 9 deletions(-) create mode 100644 scripts/00-scsi-sg3_config.rules diff --git a/Makefile.am b/Makefile.am index 240acbe..ce7ee71 100644 --- a/Makefile.am +++ b/Makefile.am @@ -123,6 +123,7 @@ EXTRA_DIST += \ inhex/z_act_query.hex EXTRA_DIST += \ + scripts/00-scsi-sg3_config.rules \ scripts/40-usb-blacklist.rules \ scripts/54-before-scsi-sg3_id.rules \ scripts/55-scsi-sg3_id.rules \ diff --git a/scripts/00-scsi-sg3_config.rules b/scripts/00-scsi-sg3_config.rules new file mode 100644 index 0000000..43d6f16 --- /dev/null +++ b/scripts/00-scsi-sg3_config.rules @@ -0,0 +1,23 @@ +# Configuration for SCSI device identification + +# To apply changes, copy this file to /etc/udev/rules.d and edit to suit your needs. +# DO NOT EDIT THIS FILE IN PLACE! + +ACTION!="add|change", GOTO="scsi_identify_end" +SUBSYSTEMS=="scsi", GOTO="scsi_identify" +GOTO="scsi_identify_end" +LABEL="scsi_identify" + +# Set ID_SCSI_INQUIRY to 0 to force running "sg_inq" for obtaining device IDs +# from SCSI VPDs, rather than looking them up in sysfs (not recommended). +ENV{ID_SCSI_INQUIRY}="" + +# Set enabled unreliable sources for setting the ID_SERIAL property. +# See 55-scsi-sg3_id.rules for detailed documentation. +ENV{.SCSI_ID_SERIAL_SRC}="T" + +# Set enabled unreliable sources for creating additional /dev/disk/by-id/scsi* symlinks. +# See 58-scsi-sg3_symlink.rules for detailed documentation. +ENV{.SCSI_SYMLINK_SRC}="" + +LABEL="scsi_identify_end" diff --git a/scripts/55-scsi-sg3_id.rules b/scripts/55-scsi-sg3_id.rules index 33b2ad3..5e9732d 100644 --- a/scripts/55-scsi-sg3_id.rules +++ b/scripts/55-scsi-sg3_id.rules @@ -36,7 +36,7 @@ KERNEL!="sd*[!0-9]|sr*", GOTO="sg3_utils_id_end" # have scanned for VPD pages, so if the vpd page attribute is not # present it is not supported (or deemed unsafe to access). # Hence we can skip the call to sg_inq and avoid I/O altogether. -# Set 'ID_SCSI_INQUIRY=0' in an earlier udev rule if the kernel +# Set ENV{ID_SCSI_INQUIRY}="0" in 00-scsi-sg3_config.rules if the kernel # fails to scan VPD pages correctly; the rules will then fall # back to calling sg_vpd directly. LABEL="scsi_inquiry" @@ -119,9 +119,7 @@ ENV{ID_SCSI_SERIAL}!="?*", ENV{SCSI_IDENT_SERIAL}=="?*", ENV{ID_SCSI_SERIAL}="$e # Be aware that multipath actually needs unique identifiers, though. # Using ambiguous identifiers for ID_SERIAL can cause data corruption with multipath. # -# To configure this, add an early rule (e.g. /etc/udev/rules.d/00-scsi-serial.rules) e.g. like this: -# ACTION!="remove", KERNEL=="sd*|sr*|st*|nst*|cciss*", ENV{.SCSI_ID_SERIAL_SRC}="TLVS" -# +# To configure the behavior, set ENV{.SCSI_ID_SERIAL_SRC} in 00-scsi-sg3_config.rules. # By default, only T10 vendor ID is allowed. ENV{.SCSI_ID_SERIAL_SRC}!="?*", ENV{.SCSI_ID_SERIAL_SRC}="T" diff --git a/scripts/58-scsi-sg3_symlink.rules b/scripts/58-scsi-sg3_symlink.rules index 99fdc23..dfe8f77 100644 --- a/scripts/58-scsi-sg3_symlink.rules +++ b/scripts/58-scsi-sg3_symlink.rules @@ -23,12 +23,8 @@ ENV{UDEV_DISABLE_PERSISTENT_STORAGE_RULES_FLAG}=="1", GOTO="sg3_utils_symlink_en # This only needs to be changed if some subsystem, like dm-crypt or LVM, depends on the # additional symlinks being present for device identification. # -# To configure the behavior, add an early rule (e.g. /etc/udev/rules.d/00-scsi-serial.rules) -# like this: -# ACTION!="remove", KERNEL=="sd*|sr*|st*|nst*|cciss*", ENV{.SCSI_SYMLINK_SRC}="TS" -# +# To configure the behavior, set ENV{.SCSI_SYMLINK_SRC} in 00-scsi-sg3_config.rules. # By default, no possibly ambiguous additional symlinks will be created. -ENV{.SCSI_SYMLINK_SRC}!="?*", ENV{.SCSI_SYMLINK_SRC}="" # 0: vpd page 0x80 identifier ENV{.SCSI_SYMLINK_SRC}=="*S*", ENV{SCSI_IDENT_SERIAL}=="?*", ENV{DEVTYPE}=="disk", \