I/O increased after migrating to NEW SAN in Linux Server

Ekamjotsingh · 12-02-2018, 03:30 PM

I am currently facing an issue for one of the Linux server, where I/O reads and writes have been increased drastically when migrated to the new SAN.

From Linux server side, I have added those SAN paths to the multipath .

Anything else that can be done from the server end for the issue resolution???

Regards
Ekam

dc.901 · 12-02-2018, 05:59 PM

What else changed besides the SAN?
Did you do OS updates, installed new HBA's or using new SFPs or even using different SAN switch?
Which distribution and which HBAs?

Ekamjotsingh · 12-02-2018, 06:55 PM

What else changed besides the SAN? ----Nothing apart from SAN.
Did you do OS updates, installed new HBA's or using new SFPs or even using different SAN switch? --- No other updates

I just migrated data from old luns to the new luns by below way:

1) Block device was formated to the same type as that of previous luns
2) Migrated data from the old lun to the new lun