On 2011-04-22 21:55, Greg Smith wrote: > On 04/22/2011 09:32 AM, Simon Riggs wrote: >> OK, that's good, but ISTM we still have a hole during >> RemoveOldXlogFiles() where we don't fsync or open/close the file, just >> rename it. > > This is also something that many applications rely upon working as hoped > for here, even though it's not technically part of POSIX. Early > versions of ext4 broke that, and it caused a giant outcry of > complaints. > http://www.h-online.com/open/news/item/Ext4-data-loss-explanations-and-workarounds-740671.html > has a good summary. This was broken on ext4 from around 2.6.28 to > 2.6.30, but the fix for it was so demanded that it's even been ported by > the relatively lazy distributions to their 2.6.28/2.6.29 kernels.
As far as I can make out, the current situation is that this fix (the auto_da_alloc mount option) doesn't work as advertised, and the ext4 maintainers are not treating this as a bug. See https://bugzilla.kernel.org/show_bug.cgi?id=15910 -M- -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
