using Murder for migration from UW IMAP
John Alton Tamplin
jtampli at sph.emory.edu
Tue Dec 10 16:02:21 EST 2002
Ted Cabeen wrote:
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>In message <1039480599.3df5371771b32 at www.sph.emory.edu>, "John A. Tamplin" writ
>>Quoting Rob Siemborski <rjs3 at andrew.cmu.edu>:
>>>Do you really have so much data that it would take 2-3 days to move it?
>>The tests I have done so far (using both imap-utils mbxcvt and custom perl code)
>>it looks like it will take around 60 hours to convert everything (2300 users,
>>23000 folders, 70G total), and that is putting /var/imap on a tmpfs filesystem
>>for the conversion (about a 2x speed improvement there) and striping /cyrus
>>across 14 drives in an FC-AL array.
>Have you considered just doing a direct mailbox conversion? You can convert
>directly to Cyrus mailboxes and then reconstruct everything. That might be
>faster than dealing with the mbxcvt code.
I need to get the flags and seen state transferred as well -- that
wouldn't do it, right? It is important that the transition be as
seemless as possible. Having to rename a few mailboxes that UW IMAP
allows but Cyrus doesn't is enough hassle to the users.
John A. Tamplin Unix System Administrator
Emory University, School of Public Health +1 404/727-9931
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