We want to run multi-drive systems we have in a JBOD mode, where each drive is basically a filesystem to itself. With the drives we currently have, we expect to have multiple failures, primarily unrecoverable ECC read errors or sometimes the drive just dying altogether. How does ext[23] handle these two primary conditions? Using them in a software RAID mode, I have sometimes seen problems with disks hang all access to the filesystem and even the entire system, but I'm not sure at what level that's happening (low-level driver? scsi layer? raid layer? filesystem layer?). If I have a drive fail taking out the entire ext3 filesystem, will I be able to stop using the filesystem (say, my application gets the error from the fs indicating some sort of problem in whatever system call it's made, who cares what), forcibly unmount the filesystem, and replace the drive? Or will the system panic? Or worse, will my application just enter an uninterruptible sleep never to return success or error? Obviously, we'll be doing our own testing, but any knowledge of these scenarios would be most appreciated. Philip * Philip Molter * Texas.Net Internet * http://www.texas.net/ * philip@xxxxxxxxx _______________________________________________ Ext3-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/ext3-users
