Archive:
Month: June 2018
How to recover a very large RAID6
RAID6 is supposed to have two sets of redundancy that could survive a simultaneous failure of two drives, and it can go directly on automatic rebuilding if you have hot swaps. However, you must have known that the RAID controller and the back plane are still playing dictatorship for a RAID group. It could happen […]
Breaking NFS’ 16 group membership limit
The 16 group limit with auth_sys is not tuneable. It is defined in RFC_5331 and cannot be adjusted or patched. However for linux running nfs-utils version over 1.0.12 and kernel version over 2.6.21, you can make rpc.mountd to manage gid to avoid this limitation. To do this: On all your nfs server, edit /etc/nfs.conf, add […]