Marco Colombo <pgsql@xxxxxxxxxx> writes: > And I'm still wondering. The problem with LVM, AFAIK, is missing support > for write barriers. Once you disable the write-back cache on the disk, > you no longer need write barriers. So I'm missing something, what else > does LVM do to break fsync()? I think you're imagining that the disk hardware is the only source of write reordering, which isn't the case ... various layers in the kernel can reorder operations before they get sent to the disk. regards, tom lane -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
