Date: Tue, 30 Oct 2007 15:05:48 +0100 From: "Daniel Eriksson" <daniel_k_eriksson@telia.com> To: <freebsd-questions@freebsd.org> Subject: Migrating a file system with minimal downtime Message-ID: <4F9C9299A10AE74E89EA580D14AA10A61A1834@royal64.emp.zapto.org>
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I want to migrate a file system containing multiple jails from a small drive to a large (RAID-1) array. I want to do this with minimal downtime. Simply shutting down the jails and using dump/restore to move the file system takes too long, but what if I do it in several steps like this: 1. "dump -0 -L -f - /usr/jails | restore -rf -" to dump the live file system at level 0 2. shut down the jails 3. unmount the original file system 4. "dump -1 -f - /usr/jails | restore -rf -" to dump any changes since the first dump 5. remount the new file system in the proper location 6. restart the jails This should work, right? Or am I missing something? (One of the jails is a mysql server, the rest are www servers.) /Daniel Eriksson
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