On Tuesday 24 Mar 2009, Raja Subramanian wrote: > > Note: check out ZFS -- RAIDZ always does full stripe writes and thus > has no issues with read-modify-write. ZFS also has other nice > features.
Is it available as a module in the mainstream distros? Google search showed me blogs of fuse-ZFS experience in Linux. > > 4. RAID10 recovery is much easier and faster. In a large RAID5 set, > if a disk fails, the entire set needs to be read for rebuilding the > failed disk. In large TB sized raid groups, rebuild can take 8hrs or > more. RAID6, etc with dual parity can overcome this issue. Thanks for confirming my own conclusion. > Rebuild of RAID10 is much faster as only 2 disks need to be read > for a rebuild. What is your opinion vis-a-vis performance of Filesystem on LVM on top of RAID 10 v/s Filesystem on the RAID devices. Any experience with such a setup? I think creating separate partitions for data and virtual disks might be the way to go. The partitions for data can be on LVM and the partitions for virtual disks w/o LVM i.e. fs created on the raid device. > > I also suggest that you consult the Best Practices documents of > you VM vendor. VMWare, Citrix Xen and Microsoft Hyper-V > websites have excellent documentation on how the IO subsystem > needs to be configured for optimal working of their solutions. The solutions under consideration are openVZ, kvm, and xen. I have not made my mind yet. I have also looked at parallels and it looks pretty interesting. -- Arun Khan _______________________________________________ To unsubscribe, email [email protected] with "unsubscribe <password> <address>" in the subject or body of the message. http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
