I am planning for a resize of a rather large file system hosting an Oracle instance (one of several on the same server). The disk is 4 TB striped over several LUNs, I'm increasing by 1 TB keeping the same stripe width. As we usually use Oracle ASM for databases, I'm not sure how big of an impact the online resize will have on both the database being extended and also the rest of the system.
Are there any rules of thumb on duration and performance impact of a resize2fs on file system of this size?