Re: [Moosefs-users] moosefs distro

[Giovanni T. <me...@gi...>]

2012/1/6 JV <ja...@da...>:
> We actually use NFS root, allowing us to have single read only base FS
> for every chunkserver.
> We can upgrade, if needed chrooting to base on master and then
> restarting all chunkservers.
> Also this system allows using different mfshdd.cfg for each
> chunkserver, allowing us to remove/add disks if they get hardware
> errors.

NFS is a good choice but may be a single point of failure if the
server is not redundant.

With PXE, each node is independent after the first boot, since their
entire rootfs is kept compressed in ram (or can be written to disk
after download, thanks to live-boot script support).
In addition, rootfs auto-enable aufs support, so it's possibile to
change files manually or via a custom post-boot script, that get lost
on reboot or that can be saved on a custom partition/usb/flash.

-- 
Giovanni Toraldo
http://gionn.net/