[arvados] updated: 2.6.0-14-g3cf3a4652

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Summary of changes:
 doc/admin/upgrading.html.textile.liquid | 10 ++++++++++
 1 file changed, 10 insertions(+)

       via  3cf3a465210c7d5d9827fdbddb6d2b9b86221857 (commit)
      from  153202359752a4516dba5fdfad32e867052d1603 (commit)

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commit 3cf3a465210c7d5d9827fdbddb6d2b9b86221857
Author: Peter Amstutz <peter.amstutz at curii.com>
Date:   Mon Apr 17 15:30:54 2023 -0400

    Add 2.6.1 to upgrade notes.
    
    Arvados-DCO-1.1-Signed-off-by: Peter Amstutz <peter.amstutz at curii.com>

diff --git a/doc/admin/upgrading.html.textile.liquid b/doc/admin/upgrading.html.textile.liquid
index 0f7c07d98..0deeaa238 100644
--- a/doc/admin/upgrading.html.textile.liquid
+++ b/doc/admin/upgrading.html.textile.liquid
@@ -28,6 +28,16 @@ TODO: extract this information based on git commit messages and generate changel
 <div class="releasenotes">
 </notextile>
 
+h2(#v2_6_1). v2.6.1 (2023-04-17)
+
+"previous: Upgrading to 2.6.0":#v2_6_0
+
+h3. Performance improvement for permission row de-duplication migration
+
+The migration which de-duplicates permission links has been optimized.  We recommend upgrading from 2.5.0 directly to 2.6.1 in order to avoid the slow permission de-deplication migration in 2.6.0.
+
+You should still plan for the arvados-api-server package upgrade to take longer than usual due to the database schema update changing the integer id column in each table from 32-bit to 64-bit.
+
 h2(#v2_6_0). v2.6.0 (2023-04-06)
 
 "previous: Upgrading to 2.5.0":#v2_5_0

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