From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christophe BOULLANGER Subject: Multipath conf Date: Fri, 10 Jun 2011 10:46:30 -0400 Message-ID: <80B8E0EA896B3E489A5802234274BA9C77C968B828@sandy.IS972DH.com> Reply-To: device-mapper development Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1735898580905003483==" Return-path: Content-Language: fr-FR 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 --===============1735898580905003483== Content-Language: fr-FR Content-Type: multipart/related; boundary="_004_80B8E0EA896B3E489A5802234274BA9C77C968B828sandyIS972DHc_"; type="multipart/alternative" --_004_80B8E0EA896B3E489A5802234274BA9C77C968B828sandyIS972DHc_ Content-Type: multipart/alternative; boundary="_000_80B8E0EA896B3E489A5802234274BA9C77C968B828sandyIS972DHc_" --_000_80B8E0EA896B3E489A5802234274BA9C77C968B828sandyIS972DHc_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi, i wanna know what is that difference of both stout of multipath -ll multipath -ll mpath2 (350010b900004b868) dm-3 IBM-ESXS,GNA073C3ESTT0Z [size=3D68G][features=3D0][hwhandler=3D0] \_ round-robin 0 [prio=3D1][active] \_ 1:0:1:0 sdc 8:32 [active][ready] \_ round-robin 0 [prio=3D1][enabled] \_ 1:0:3:0 sde 8:64 [active][ready] c quoi la diff entre ca et ca orasm (36005076b0755627f4dee6fd70000002d) dm-6 IBM,1820N00 size=3D250G features=3D'1 queue_if_no_path' hwhandler=3D'0' wp=3Dr= w `-+- policy=3D'round-robin 0' prio=3D1 status=3Dactive |- 0:0:3:0 sdb 8:16 active ready running `- 0:0:2:0 sda 8:0 active ready running One have 2 tree and one both disk is on the same branch One is more secure ? Thank you for your help. Have a nice day. _______________________________ Christophe BOULLANGER Informatique Services Immeuble Rubix Zone de Manhity 97232 Le Lamentin Tel : 0596 66 69 98 [cid:624074314@10062011-1FE1] --_000_80B8E0EA896B3E489A5802234274BA9C77C968B828sandyIS972DHc_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi,

i wanna k= now what is=20 that difference of both stout of multipath -ll

<Anti-= T>=20 multipath -ll
<Anti-T> mpath2 (350010b900004b868) dm-3=20 IBM-ESXS,GNA073C3ESTT0Z
<Anti-T> [size=3D68G][features=3D0][hwhan= dler=3D0]=20
<Anti-T> \_ round-robin 0 [prio=3D1][active]
<Anti-T>&n= bsp; \_=20 1:0:1:0 sdc 8:32 [active][ready]
<Anti-T> \_ round-robin 0= =20 [prio=3D1][enabled]
<Anti-T> \_ 1:0:3:0 sde 8:64 =20 [active][ready]
<Anti-T> c quoi la diff entre ca
<Anti-T>= ; et=20 ca
<Anti-T> orasm (36005076b0755627f4dee6fd70000002d) dm-6=20 IBM,1820N00
<Anti-T> size=3D250G features=3D'1 queue_if_no_path'=20 hwhandler=3D'0' wp=3Drw
<Anti-T> `-+- policy=3D'round-robin 0' pri= o=3D1=20 status=3Dactive
<Anti-T> |- 0:0:3:0 sdb 8:16 active re= ady=20 running
<Anti-T> `- 0:0:2:0 sda 8:0 active ready= =20 running

One have = 2 tree and=20 one both disk is on the same branch

One is mo= re secure=20 ?

Thank you= for your=20 help.

Have a ni= ce=20 day.

_______________________________
Christophe=20 BOULLANGER
Informatique Services
Immeuble Rubix
Zone de=20 Manhity
97232 Le Lamentin

Tel : 0596 66 69 98

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Reeves" Subject: Re: Multipath conf Date: Tue, 14 Jun 2011 15:12:37 +0100 Message-ID: <4DF76C55.4070802@redhat.com> References: <80B8E0EA896B3E489A5802234274BA9C77C968B828@sandy.IS972DH.com> Reply-To: device-mapper development Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <80B8E0EA896B3E489A5802234274BA9C77C968B828@sandy.IS972DH.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com To: device-mapper development Cc: Christophe BOULLANGER List-Id: dm-devel.ids On 06/10/2011 03:46 PM, Christophe BOULLANGER wrote: > Hi, > i wanna know what is that difference of both stout of multipath -ll > multipath -ll > mpath2 (350010b900004b868) dm-3 IBM-ESXS,GNA073C3ESTT0Z > [size=68G][features=0][hwhandler=0] > \_ round-robin 0 [prio=1][active] > \_ 1:0:1:0 sdc 8:32 [active][ready] > \_ round-robin 0 [prio=1][enabled] > \_ 1:0:3:0 sde 8:64 [active][ready] > c quoi la diff entre ca > et ca > orasm (36005076b0755627f4dee6fd70000002d) dm-6 IBM,1820N00 > size=250G features='1 queue_if_no_path' hwhandler='0' wp=rw > `-+- policy='round-robin 0' prio=1 status=active > |- 0:0:3:0 sdb 8:16 active ready running > `- 0:0:2:0 sda 8:0 active ready running > One have 2 tree and one both disk is on the same branch > One is more secure ? > Thank you for your help. > Have a nice day. The first one has two path groups each with one path and is configured for failover (no load balancing of I/O). The second has one path group with both paths in it and I/O will be balanced (round-robin) between them. This is covered in the man page and other documentation - see the "failover" and "multibus" path grouping policies. Regards, Bryn.