May 3, 200818 yr One thing that annoys me is that when I'm shutting unraid down from the web page, that the drives have to spin up in order to stop the array. I'd like the ability to stop the array without spinning the drives up first.
May 3, 200818 yr probably not possible... the caches have to be flushed... From what I figure, if it has been an hour since the drive has been written to, then any buffered data should have long since been written out to the drive by some background idle process. Otherwise what is it waiting for to write the buffer cache, the machine to get busy again? If this is not the case, then some kernel tuning might be in order. Joe L.
May 3, 200818 yr The cache is flished, but unmounting the drives requires updating a superblock, which means writing to the disk. If we were to "somehow" use autofs and automatically mount/unmount the drives it would be a different story. This is how I did it on one of my large backup servers. Some of the filesystems were 2TB in side, so we automounted them in the event of a system crash, anything that was not mounted did not have to be fsck'ed.
May 3, 200818 yr interesting approach - doesn't it have any delay issues? (waiting for a drive not only to spin up when needed, but also to be remounted...)
May 3, 200818 yr interesting approach - doesn't it have any delay issues? (waiting for a drive not only to spin up when needed, but also to be remounted...) Yes there are delays, but the drives are used once a day for daily backups. I just wrote a cron job to navigate to each drive 30 minutes before bacjups. So they are all spinning and mounted when the backups kick off.
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