cc'ing Barak. On Tue, Jun 7, 2016 at 4:26 PM Fred Whipple <[email protected]> wrote:
> Hi all, > > Apologies if this is a more user question but since Torus is quite new I > thought this group may be more appropriate. > > Understanding that Torus is still quite new, and also understanding that > comparing a filesystem to distributed block storage is quite different, I'm > trying to determine if Torus' consistency checking is similar to ZFS' > consistency checking and at what times that consistency is checked. From > the early docs, I believe I read that Torus does a CRC check at write time, > which will ensure the data is written correctly to all storage nodes. > Similar with ZFS. When reading, ZFS will check the data it's reading and, > even better, if you have RAID1/Z, it will transparently give you the > "correct" block and then auto-repair the "incorrect" one. Does or will > Torus do something similar? > > The context is obviously to provide not only high availability but also > high reliability. It occurred to me that you could always create two > volumes and run ZFS on them, but assuming redundancy at the Torus level was > 2, you'd have 4 copies of the same data. I suppose you could run two Torus > networks on separate hardware with redundancy at 1 and run ZFS across them. > > Thanks in advance! > > -Fred >
