maybe the below blog can help you :
http://cephnotes.ksperis.com/blog/2014/06/29/ceph-journal-migration/
在 Wed, 13 Jan 2016 11:06:33 +0800，小科 <1103262...@qq.com> 写道:
when my journal disk don't have enough space, i want change a other
disk which has enough space to save journal.
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This may help you.
http://lists.opennebula.org/pipermail/ceph-users-ceph.com/2014-May/039576.html
Rgds,
Shinobu
- Original Message -
From: "小科" <1103262...@qq.com>
To: "ceph-users"
Sent: Wednesday, January 13, 2016 12:06:33 PM
Subject: [ceph-users] how
when my journal disk don't have enough space, i want change a other disk which
has enough space to save journal.___
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