Hi, I need to use a raid volume for swap, utilizing partitions from 4 physical drives I have available. From my experience I have three options - raid5, raid10 with 2 offset chunks, and two raid 1 volumes that are swapon-ed with equal priority. However I have a hard time figuring out what to use as I am not really sure how can I detect the usage patterns of swap, left alone benchmark it. Has anyone done anything like this, or is there information on what kind of reads/writes the kernel performs when paging in and out?
Before you answer my question - yes, I am painfully aware of the paradigm "swap on raid is bad", and I know there are other ways to solve it, but my situation requires me to have swap. Several weeks ago a drive failed and took a full partition away bringing the system to its knees and causied massive data corruption. I am also aware that I can use a file that will reside alongside my other data, but fragmentation makes this approach inefficient. So I am looking into placing the swap directly on a raid voulme. Thanks Peter - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
