Remove journal from GFS

["Claudio Tassini" <claudio.tassini@xxxxxxxxx>]

Hi all,

i have a cluster in which two nodes share a GFS filesystem . I created the filesystem with 3 journals - just to be sure - , and now I need to add TWO cluster nodes and make the GFS fs visible to all the 4 nodes. When I try to add a journal to the fs (to have 4 of them), I got this:

gfs_jadd  -j 1 -T -v /gfsfilesystem

Requested size (65536 blocks) greater than available space (2 blocks)

So i read that it's normal, but I really need to add a journal to this fs. I was thinking about deleting one the current journals (I have 3 and I'm using 2), and then create two "half-sized" new journals, to reach the number of 4. 

There is some other way I can achieve my goal? I don't think I can shrink GFS, and I simply can't backup all data, create a new FS and then restore (it's a 1 TB fs with production maildirs inside - you know... a VERY lot of small, really small files, it would mean a 2-days downtime).

Any help would be really appreciated.

--
Claudio Tassini

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