The errors were repeated hardware resets of one of the non-Caviar Green disks, probably the one listing a 10 sec spinup time in the SMART data. There is no way to log from there, as the repeated resets prevent opening the initramfs shell. The only way I could "log" this would be to reinstall the offending version of dmraid and then make a video file using a video camera aimed at the screen. The constant resets are probably hard on the drive as well, I am reluctant to put it through that again, as it is a critical backup drive. The errors were seen when booting without the splash screen, on the boot console.
The rest of the problems, on further examination, appear to the the partition table and partition device handles not coming up as dmraid tries and fails to bring up a chipset RAID on the two volumes that were initially set up for it, but failing to complete the job on this probably unsupported chipset. Earlier versions simply ignored all my disks. Since I have no reason to use Windows (trust issues), I have no reason to dual boot it and if chipset "fakeraid" cannot outperform mdadm no reason not to use mdadm for all RAID volumes anyway unless I can get my hands on ($$$) a hardware controller that won't drop Caviar Greens from an array. > Date: Mon, 19 Mar 2012 13:44:54 +0000 > From: [email protected] > To: [email protected] > Subject: [Bug 958334] Re: dmraid_1.0.0.rc16-4.1ubuntu7 blocks reading some > disks, resets others > > You mention that there were some hardware errors, I assume you saw this > in dmesg or /var/log/kern.log? Please paste them. > > Also FYI, fakeraid is not any faster than mdadm since both are pure > software raid. mdadm is much more reliable and better supported. The > only advantage fakeraid has is that you can dual boot with windows. > > > ** Changed in: dmraid (Ubuntu) > Status: New => Incomplete > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/958334 > > Title: > dmraid_1.0.0.rc16-4.1ubuntu7 blocks reading some disks, resets others > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/dmraid/+bug/958334/+subscriptions -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/958334 Title: dmraid_1.0.0.rc16-4.1ubuntu7 blocks reading some disks, resets others To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dmraid/+bug/958334/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
