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+From: David Bremner <david@tethera.net>\r
+To: Notmuch list <notmuch@notmuchmail.org>\r
+Subject: Re: WARNING: database upgrade coming\r
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+Date: Wed, 12 Mar 2014 08:25:00 -0300\r
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+\r
+David Bremner <david@tethera.net> writes:\r
+\r
+> I will fairly soon push some version of jani's patches changing folder:\r
+> matching to master. This will require an irreversible database upgrade.\r
+\r
+This is pushed. One additional warning, the upgrade takes some time (for\r
+my 300k messages, about 20 minutes), so don't do it when you desperately\r
+need to run notmuch for other purposes.\r
+\r
+\r
+d\r