On 10/25/05, Sander <[EMAIL PROTECTED]> wrote: > That will kill performance badly. First of all the two read/writes > needed, and second because you have to seek from one end to the disk to > the other every time you read/write something.
Kill it worse for writes than a filesytem without wandering logs? I don't think so, since they double write in any case... Since reiser4 defers flushes you don't end up seeking all over the disk, you will write out a nice long queue, then a little seeking to ripple up the transaction(s). Reading will not be harmed since we will expect the underlying disk to report read failures. > And what is the advantage? You are not protected against a lot of disk > failures (only against bad blocks, right?). Badblocks have become the most common non-transient failure mode of disks by far. > There is a lot more advantage in buying two disks and do raid over them. > This is (much) cheaper, gives better performance and gives more > protection. Cheaper how? Two disks are cheaper than one? > Anyway, no need for a plugin. You can just divide your disk in two > partitions and configure them as a raid1. > > Or am I missing something in your suggestion? If I do not want, and can not afford, that level of protection for all my data, but only some, RAID-1 is a very wasteful solution.
