Boyd Stephen Smith Jr. wrote:
On Tuesday 15 September 2009 15:01:50 Carlos E. R. wrote:
On Tuesday, 2009-09-15 at 14:57 -0500, Boyd Stephen Smith Jr. wrote:
On Tuesday 15 September 2009 14:22:50 Carlos E. R. wrote:
As for tools designed to embed data to assist in recovering from or at least minimizing loss of data due to media errors, including in concert with compression: In the free world right off the top of my head, dar and xar. And dar just uses parchive which you could use seperately with something else too. And any of the official backup programs (amanda, zmanda, bru, bacula, arkeia, ...?)
I wonder why not on free software.
Amanda and Bacula are free software the last time I checked.
And they have those features we are refering to, like automatic error detection and recovery?
Based on my read of Brain's mail, which you have quoted twice: Yes.
If you'd like to read the relevant parts of Brain's mail, it is (still) quoted above.
Yeah, and it looks like I have to eat that particular statement. I was mixing thoughts a little , thinking about the ability to back up extended attributes and acls, and everything else that tar can't, and the capacity for fault-tolerance. But that's no excuse. Bacula has a checksum in it's block header but that's just to detect and contain errors, not actually recover from them. Several things, almost everything, has some ability to do that, detect a media error and skip past it and resume restoring good data beyond it, even with compression. Some things can try dd_rescue technique of just plain re-reading the same bad spot over and over hoping to eventually get a good read by luck or build up the data cumulatively from the multiple passes. But I can't find anything really that adds in ECC data except parchive. Again. No excuse for the sloppy statement. -- bkw -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org