Adding an additional journal takes up minimum of 32M of space per journal. It looks like you have no free space on the GFS to add the journal.
You will have to grow your GFS volume by at least 32M to add the additional Journal. Then run this command.
Gfs_jadd –T –v –J 32 /gfsfilesystem
From: linux-cluster-bounces redhat com [mailto: linux-cluster-bounces redhat.com] On Behalf Of Claudio Tassini
Sent: Wednesday, August 22, 2007 11:03 AM
To: linux clustering
Subject: [Linux-cluster] Remove journal from GFS
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.
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