topic Unable to mount path from SAN in Operating System - Linux

Unable to mount path from SAN

hangyu — Tue, 27 Feb 2007 20:49:41 GMT

I have attach the linux server to the SAN storage as below , all the path from the SAN can be mount but except /dev/emcpowerf1 is not mount, I sure this path (/dev/emcpowerf1) is available , the error as below , can advise what is the possible reason of it ?

#/etc/fstab
/dev/emcpowerb1 /mnt/c1 ext3
/dev/emcpowerc1 /mnt/c2 ext3
/dev/emcpowerd1 /mnt/c3 ext3
/dev/emcpowere1 /mnt/c4 ext3
/dev/emcpowerf1 /mnt/c5 ext3
/dev/emcpowerg1 /mnt/c6 ext3
/dev/emcpowerh1 /mnt/c7 ext3
/dev/emcpoweri1 /mnt/c8 ext3

#mount /dev/emcpowerf1 /mnt/c5
mount: /dev/emcpowerf1 is not a valid block device

Re: Unable to mount path from SAN

VK2COT — Wed, 28 Feb 2007 19:06:26 GMT

It looks as though you do not want to use
LVM (no volume manager). That is fine if
that is what your design wants.

Anyway, you must run commands mke2fs(1) to
create file systems firstly...

Regards,

VK2COT

Re: Unable to mount path from SAN

Robert Walker_8 — Wed, 28 Feb 2007 20:19:28 GMT

Hi,

We had some problems initially with our SAN and RHEL - the file system devices moved about due to the SANs multipath and mounting via the label we would often get duplicate label errors. We wanted to move away from EMC Power Path due to kernel versioning restrictions.

In the end we use Native mode Multipath (DM-MPIO), although it isnt technically as good as EMC's multipath.

We also dont use LVM!

Anyway the EMC document is called "Native Multipath Failover Based on DM-MPIO for
v2.6.x Linux Kernel and EMC Storage Arrays" and it covers SLES and RHEL systems primarily.

Regards,

Robert.