The Monday 2004-10-18 at 18:10 -0400, Jeffrey Laramie wrote:
******* Then, a word: no matter how many times you check for bad blocks can help you prevent a hard disk crash. SMART may help sometimes, and then, it might not. If you are worried, design a proper backup procedure, use RAID arrays. ******
The new file system in Solaris 10 actually checksums each file then compares the checksums on each mirrored disk making any repairs as you go.
Mmm... interesting. A mirror fs may use two strategies: read the file from any of the drives (and thus speed up read operations), or read all copies and compare them. I think Linux sftware raid does the former, but I'm not sure. Having checksums allows that read check to be done without really reading every file twice or thrice. Interesting.
http://wwws.sun.com/software/solaris/10/ds/zfs.jsp
I downloaded and installed the preview and overall I like SuSE 9.1 better, but that ZFS is really interesting stuff. I wonder if there are any open source file systems like that?
I don't know. -- Cheers, Carlos Robinson