File system question for sas shared storage

[moprmac]

Okay I have read that you should not mount 2 servers to the same drive with standard fs like ext3 or ext4 because it will corrupt the data. Is this the same for a sas array such as md3200?

If you are supposed to use cluster fs like glusterfs then how do you configure? Everything I am finding is based on ip setup such as replicating 2 different drives on 2 different machines. I am trying to use part of the md3200 sas for backup and iso storage.

I am way confused on this, any help much appreciated!

Thanks,

 

[udo]

Okay I have read that you should not mount 2 servers to the same drive with standard fs like ext3 or ext4 because it will corrupt the data. Is this the same for a sas array such as md3200?

Hi,
that's the same - for the OS it's makes no differences if you use an single disks as block-device or an sas-storage. Both are block-devices.

If you are supposed to use cluster fs like glusterfs then how do you configure? Everything I am finding is based on ip setup such as replicating 2 different drives on 2 different machines. I am trying to use part of the md3200 sas for backup and iso storage.

I am way confused on this, any help much appreciated!

Thanks,

right, to mount an filesystem on more than one node you need an cluster-fs or (the easier way) nfs!

I have no experiences with glusterfs and wold do in this case simply nfs (mount the filesystem on one host and export to the other) - for backup and iso it's also no problem, that you have a SPOF with the nfs-solution. If the node with the nfs-export fails, you can simply mount the filesystem on the other host...

Udo

 

[e100]

gluster is a distributed filesystem, not a cluster filesystem.

If you want to put a cluster filesystem on a shared block device, like your shared sas setup, you need to use something like GFS.
https://access.redhat.com/site/docu...ml/Global_File_System_2/ch-overview-GFS2.html

 

[moprmac]

Thank you Udo and e100,

So having 2 servers connected to md3200 using sas, do you think I should use gfs2 to format a partition and mount it from the servers?

I don't really understand using nfs and exporting, export to where? The files would be in 1 location, just being used by 2 different servers.


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