I finally found some time to test this out. With 2.6.37-rc4 (openSUSE KOTD kernel) I easily encounter the issue. Using a virtual machine, I created a stock, minimal openSUSE 11.3 x86_64 install, installed all updates, installed postgresql and the 'KOTD' (Kernel of the Day) kernel, and ran the following tests (as postgres user because I'm lazy). 1. create a database (from bash): createdb test 2. place the following contents in a file (I used 't.sql'): begin; create temporary table foo as select x as a, ARRAY[x] as b FROM generate_series(1, 10000000 ) AS x; create index foo_a_idx on foo (a); create index foo_b_idx on foo USING GIN (b); rollback; 3. execute that sql: psql -f t.sql --echo-all test With 2.6.34.7 I can re-run [3] all day long, as many times as I want, without issue. With 2.6.37-rc4-13 (the currently-installed KOTD kernel) if tails pretty frequently. Then I tested with the 'vanilla' kernel available here: http://download.opensuse.org/repositories/Kernel:/vanilla/standard/ The 'vanilla' kernel exhibited the same problems. The version I tested: 2.6.37-rc4-219-g771f8bc-vanilla. Incidentally, quick tests of jfs, xfs, and ext3 do _not_ show the same problems, although I will note that I usually saw failure at least 1 in 3, but sometimes had to re-run the sql test 4 or 5 times before I saw failure. I will continue to do some testing, but I will hold off on testing the commits above until I receive further testing suggestions. -- Jon -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
