On Mon, 30 Jun 2014 20:25:31 Noah O'Donoghue wrote:
On 30 June 2014 20:12, Russell Coker <russell@coker.com.au> wrote:
No, "dup" for BTRFS metadata and "copies=" for data on ZFS give you this on a single disk.
Ouch, that sounds like it could lead to some "spiral of death" type scenarios as a failing drive continually tries to write to; a failing drive..
http://research.cs.wisc.edu/adsl/Publications/corruption-fast08.html I don't think you are at risk of that. The above paper shows that usually drive corruption involves a small number of sectors. ~50 errors out of a 3TB disk isn't much. The "dup" and "copies=" option just allows you to have a copy of each important block that's not on one of those 50 sectors.
On reading more about ZFS, is it true the latest source code isn't available for ZFS? So Sun is withholding new features, fixes etc from the codebase?
Not sure. But the current version works pretty well, better than any other filesystem for large amounts of storage where reliability is desired. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/