Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Lars Ellenberg wrote: > On Wed, Jun 13, 2007 at 09:04:41AM -0400, Ryan Steele wrote: > >> Ben and Mark, >> >> Thank you for your input. I am currently fixing up my FAI configs such >> that they do not create an MD device out of two of the unused >> partitions, as I don't see any need to have the DRBD meta-disk striped >> or mirrored (unless someone has any good reason pointing to the >> contrary, e.g. significant performance gains). >> >> Pending that, I will re-test with drbddisk and Filesystem. Again, I >> appreciate the advice and hopefully this will yield successful results! >> > > um. > saying "hey, I use drbd, there is no need for raid underneath" > is similar to "hey, I have raid, there is no need for backups anymore". > > and yes, you get a performance gain from using raid1, > because reads can be striped. > > Well, it's only 128 MB of information, right? It's not like my cylinders arms are going to be thrashing all over the disk searching for meta information, so how much of a performance gain would I _really_ get from striping those devices? And, just to be clear, all of my other devices (including the drbd data devices) are RAIDed, so you're a bit off the mark by accusing me (even implicitly) of saying "I use DRBD, there is no need for RAID underneath." I just wasn't sure if it was necessary for improved performance with regards to the meta-disk. We learn by asking questions, right? In any case, thanks for the input, I appreciate it. Best Regards, Ryan