[CentOS] Multipathing with Sun 7310

Dear list, we have a relatively new Sun Storage 7310, where we connect CentOS 5.5 Servers (IBM LS21/LS41 Blades) via Brocade Switches, 4GBit FC. The Blades boot from SAN via qla2xxx, and have no harddisks at all. We want them to use multipathing from the very beginning, so /boot and / are

Re: [CentOS] Multipathing with Sun 7310

sda 8:0 [active][ready] \_ 1:0:0:0 sde 8:64 [active][ready] however, the system lives happily, despite the error messages. Jens Neu Health Services Network Administration Phone: +49 (0) 30 68905-2412 Mail: jens@biotronik.de Alexander Dalloz ad+li...@uni-x.org Sent by: centos-boun

Re: [CentOS] Multipathing with Sun 7310

Alexander, thank you very much, you're the man! best regards from Berlin Jens Neu Health Services Network Administration Alexander Dalloz ad+li...@uni-x.org Sent by: centos-boun...@centos.org 05/28/2010 04:29 PM Please respond to CentOS mailing list centos@centos.org To CentOS mailing

[CentOS] SUN Storage 7310 with RHEL 5.5 / Centos 5.5 and multipathed root, again.

to me. System is very up-to-date, Centos 5.5 Version below: [r...@dev-db3 ~]# yum list device-mapper-multipath Installed Packages device-mapper-multipath.x86_640.4.7-34.el5_5.1installed [r...@dev-db3 ~]# uname -r 2.6.18-194.3.1.el5 Any suggestions? best regards from Berlin, Jens Neu

Re: [CentOS] IBM ServeRAID M5014 and CentOS 5.5

http://www.redbooks.ibm.com/technotes/tips0738.pdf clearly states Support for RHEL 4 as well as 5, so you should have no problem with CentOS 5.5. regards Jens Neu Peter Hinse l...@d0pefish.de Sent by: centos-boun...@centos.org 06/15/2010 01:46 PM Please respond to CentOS mailing list centos

Re: [CentOS] Running yum shows errors

Hi, Did you try to disable the mirror selection and specify one single repo? -Jens - Originalnachricht - Von: Jatin Davey [jasho...@cisco.com] Gesendet: 14.07.2010 11:03 ZE5B An: centos@centos.org Betreff: [CentOS] Running yum shows errors Hi I am getting the following errors

[CentOS] GPT Partitions 2.2T with Centos 5.5

Dear all, unfortunately I observe drastic drops in read- performance when I connect LUNs 2.2T to our Centos 5.5 Servers. I suspect issues with the GUID Partition Table, since it happens reproducibly only on the LUNs 2.2T and goes back to normal performance when using a LUN 2T with normal,

Re: [CentOS] GPT Partitions 2.2T with Centos 5.5

I think ext3 is a bit slow on so big LUNS, try xfs or similar? there is no official support for xfs in RHEL5, so that is not an option. Besides, I'm talking about a drop of 150mb/s to ~10mb/s read performance when cracking the 2.2T size. This is clearly not in the ext3 (or FS for that matter)

Re: [CentOS] GPT Partitions 2.2T with Centos 5.5

Do you see the slow behaviour (10 MiB/s) for all of the device or only for the part that is 2T? Why use a partition table at all? run dd directly against the device. If this is slow then you have a controller side problem. very true, back to Go :( Peter Kjellstrom c...@nsc.liu.se