Gentoo Archives: gentoo-user

From: "Stefan G. Weichinger" <lists@×××××.at>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] multipath.conf : learning how to use
Date: Wed, 14 Aug 2019 08:14:43
Message-Id: 38401489-dffa-b3e8-422f-3d3585ae74ad@xunil.at
In Reply to: Re: [gentoo-user] multipath.conf : learning how to use by "J. Roeleveld"
Am 14.08.19 um 08:36 schrieb J. Roeleveld:
> Stefan, > > > On maandag 29 juli 2019 21:28:50 CEST Stefan G. Weichinger wrote: >> At a customer I have to check through an older gentoo server. >> >> The former admin is not available anymore and among other things I have >> to check how the SAN storage is attached. > > If you ever encounter that admin, make sure you hide the body :)
I only learn day by day what a mess all that is ...
>> I see two devices sdc and sdd that should come from the SAN. > > Interesting, are these supposed to be the same?
No, I don't think so. But maybe you'r right. No sdd in fstab or in the mounts at all and ...
> what do you get back from: > > # /usr/bin/sg_vpd --page=di /dev/sdc > # /usr/bin/sg_vpd --page=di /dev/sdd > (As suggested in the multipathd.conf file you listed above)
these 2 look similar to me: samba ~ # /usr/bin/sg_vpd --page=di /dev/sdc Device Identification VPD page: Addressed logical unit: designator type: NAA, code set: Binary 0x600c0ff0001e91b2c1bae25601000000 designator type: vendor specific [0x0], code set: Binary vendor specific: 00 11 32 36 37 32 31 36 00 00 c0 ff 1e 91 b2 00 00 .267216......... 10 c0 a8 64 12 00 c0 ff 1e 8d 38 00 00 c0 a8 64 11 ..d......8....d. Target port: designator type: Relative target port, code set: Binary Relative target port: 0x3 designator type: Target port group, code set: Binary Target port group: 0x0 designator type: NAA, code set: Binary transport: Fibre Channel Protocol for SCSI (FCP-4) 0x227000c0ff267216 Target device that contains addressed lu: designator type: NAA, code set: Binary transport: Fibre Channel Protocol for SCSI (FCP-4) 0x208000c0ff267216 samba ~ # /usr/bin/sg_vpd --page=di /dev/sdd Device Identification VPD page: Addressed logical unit: designator type: NAA, code set: Binary 0x600c0ff0001e91b2c1bae25601000000 designator type: vendor specific [0x0], code set: Binary vendor specific: 00 11 32 36 37 32 31 36 00 00 c0 ff 1e 8d 38 00 00 .267216......8.. 10 c0 a8 64 11 00 c0 ff 1e 91 b2 00 00 c0 a8 64 12 ..d...........d. Target port: designator type: Relative target port, code set: Binary Relative target port: 0x7 designator type: Target port group, code set: Binary Target port group: 0x1 designator type: NAA, code set: Binary transport: Fibre Channel Protocol for SCSI (FCP-4) 0x267000c0ff267216 Target device that contains addressed lu: designator type: NAA, code set: Binary transport: Fibre Channel Protocol for SCSI (FCP-4) 0x208000c0ff267216
> If "sdc" and "sdd" are the same disk, the "Adressed logical unit" id should be > the same for both.
So we have 0x600c0ff0001e91b2c1bae25601000000 twice, right? There's a /dev/sdb as well, commented in fstab with "9750-8i Raid6 (4x3TB + 2x4TB)" but that seems another "branch" of devices: # /usr/bin/sg_vpd --page=di /dev/sdb Device Identification VPD page: Addressed logical unit: designator type: NAA, code set: Binary 0x600605b00d0ce810217ccffe19f851e8 - In the first week of september I travel there and I have the job to reinstall that server using Debian Linux (yes, gentoo-users, I am getting OT here ;-)).

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Subject Author
Re: [gentoo-user] multipath.conf : learning how to use "J. Roeleveld" <joost@××××××××.org>