Messages in this thread | | | Date | Wed, 27 Apr 2005 11:18:58 +0200 | From | Helge Hafting <> | Subject | Re: Ext3+ramdisk journaling problem |
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Kyle Moffett wrote:
> On Apr 24, 2005, at 21:22, Xin Zhao wrote: > >> hi, >> >> I used ramdisk as an ext3 journal and mount ext3 file system with >> option data=journal. It worked fine and speedup the ext3 file system. > > > Uhh, the whole point of a journal is that when the computer goes down > hard and doesn't have a chance to clean up. If you put the journal on > a ramdisk, you might as well just mount it as an ext2 filesystem and > be done with it. Without the journal _on_disk_ you get no data or > filesystem reliability advantages. If you're after speed, just forgo > the reliability or buy better disks. > Alternative: Buy a real ramdisk with battery-backup instead of using a "ramdisk" in system ram. Such a thing will last across a reboot, offering both nice speed and all the comforts of a journal.
Helge Hafting
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