On 07.10.08 20:34, Henrik Nordstrom wrote: > On tis, 2008-10-07 at 12:46 -0300, Rafael Gomes wrote: > > So, it is very risky. > > > > User may get a old page after a crash and journal recovery. > > It's worse. The user may get a corruoted page with content mixed from > various old files after a system crash an journal recovery. > > With the default data=ordered this is avoided entirely, but at the > expense of somewhat higher memory pressure under high load and somewhat > lower write performance. Or you may get micromemory PCI card with battery-powered RAM, behaving as disk (linux kernel config CONFIG_BLK_DEV_UMEM) and use that for (even data) journalling :) http://www.vmetro.com/category4147.html?subid=4123 -- Matus UHLAR - fantomas, uhlar@xxxxxxxxxxx ; http://www.fantomas.sk/ Warning: I wish NOT to receive e-mail advertising to this address. Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. I wonder how much deeper the ocean would be without sponges.
