From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sandrine Twardy Subject: Multipath on boot and root partition with Redhat5.0 Date: Wed, 10 Oct 2007 12:58:41 +0200 Message-ID: <470CB061.5000902@univ-tln.fr> Reply-To: device-mapper development Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1494400364==" Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com To: dm-devel@redhat.com List-Id: dm-devel.ids This is a cryptographically signed message in MIME format. --===============1494400364== Content-Type: multipart/signed; protocol="application/x-pkcs7-signature"; micalg=sha1; boundary="------------ms060704040401030304070508" This is a cryptographically signed message in MIME format. --------------ms060704040401030304070508 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Hello, I have a SAN Eva 5000 HP And I have installed a redhat 5.0 on my server with "linux mpath", so far all is fine. I have an os device multipathed as follow : > multipath -ll mpath0 () dm-0 COMPAQ,HSV110 (C)COMPAQ [size=7.0G][features=0][hwhandler=0] \_ round-robin 0 [prio=0][active] \_ 3:0:0:1 sdb 8:16 [active][ready] \_ 4:0:0:1 sdc 8:32 [active][ready] But when I presents a new lun to my host and scans again the scsi lun, I am losing the multipath on the disk (/ and /boot) (possibly because the name of device is changed from sdb/sdc to sdc/sde ? ) Here's an extract of my multipath.conf: multipath { wwid 3600508b40000c1c50001c000000b0000 path_grouping_policy group_by_serial rr_weight uniform prio_callout /bin/true alias os_lun } But it's seems that on boot the mutlipath.conf file is not read. Am I right? When the system is booted, multipathd cannot use the boot device ... What can I do to fix the boot device name persistence? Where is supposed to be configuration file that defines the multipath options of the boot device ? Right now, the server can boot because my fstab is like this: LABEL=/1 / LABEL=/boot /boot Thanks you for your help --------------ms060704040401030304070508 Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIOQzCC A9swggLDoAMCAQICAQIwDQYJKoZIhvcNAQEEBQAwTzELMAkGA1UEBhMCRlIxDDAKBgNVBAoT A0NSVTESMBAGA1UEAxMJYWMtcmFjaW5lMR4wHAYJKoZIhvcNAQkBFg9jYS1hZG1pbkBjcnUu ZnIwHhcNMDMwNTE2MDkzMTE3WhcNMTIxMjE0MDkzMTE3WjBUMQswCQYDVQQGEwJGUjEMMAoG A1UEChMDQ1JVMRcwFQYDVQQDEw5hYy11dGlsaXNhdGV1cjEeMBwGCSqGSIb3DQEJARYPY2Et YWRtaW5AY3J1LmZyMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtXGYMirQ2feu 6b4FDrH8PRwIyjfXPSXaG33GoatYJIbOmxAwnGbwVBng3WDzoW5X45RWq93nOxSdx4MTsGQJ pBihob2h4XeGpL54WlLd+kvOxvp/0OzLYYcESI3dpVRjf6jB8Ggc7BUlE+ptIjyXAVTNKz1o 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