On 01/04/2012 11:33, David Brown wrote: [...]
For an application like this, it would probably make sense to put the xfs log (and the mdraid bitmap file, if you are using one) on a separate disk - perhaps a small SSD.
Now that you've suggested that, it occurs to me that for an application like this, the OP might be better doing his multiple slow streams to a spool folder on SSD, and copying over to the big array of spinning rust when each stream completes. 200 streams of 500MB is 100GB of data, so a pair of slightly larger SSDs in RAID1 (or RAID10, to balance the reads coming off) would do nicely as a spool area.
This might also be a good application for bcache, FlashCache or whatever. Cheers, John. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
