SAS Viya LTS 2024.09 CAS Disk Cache - block or filesystem storageclass?

[EyalGonen]

Hi experts,

SAS Viya LTS 2024.09 on OCP.

When setting up CAS Disk Cache according to https://go.documentation.sas.com/doc/en/itopscdc/v_064/dplyml0phy0dkr/n08u2yg8tdkb4jn18u8zsi6yfv3d.h... does the storage need to be BLOCK based or FILESYSTEM based (there is an option to choose between the two when creating the PVC)? Does it matter to SAS Viya?

I think it needs a FILESYSTEM type as there is a note on that page that says " Make sure the volume is formatted with an xfs or ext4 file system and is mounted by the VM." 

Is this a correct understanding?

[gwootton · Accepted solution]

The FILESYSTEM volume mode would be appropriate, Viya doesn't use a raw block device for CAS disk cache.

[EyalGonen]

Can I safely assume that FILESYSTEM type PV is also the one which should be used for SAS WORK in the Compute Server?

[gwootton]

Yes, the same is true of WORK.