Hello, we are thinking about using BtrFS on standard hardware for a fileserver with about 50T (100T raw) of storage (25×4TByte). This is what I understood so far. Is this right? · incremental send/receive works. · There is no support for hotspares (spare disks that automatically replaces faulty disk). · BtrFS with RAID1 is fairly stable. · RAID 5/6 spreads all data over all devices, leading to performance problems on large diskarrays, and there is no option to limit the numbers of disk per stripe so far. Some questions: · There where reports, that bcache with btrfs leads to corruption. Is this still so? · If a disk failes, does BtrFS rebalance automatically? (This would give a a kind o hotspare behavior) · Besides using bcache, are there any possibilities to boost performance by adding (dedicated) cache-SSDs to a BtrFS? · Are there any reports/papers/web-pages about BtrFS-systems this size in use? Praises, complains, performance-reviews, whatever… MfG bmg -- „Des is völlig wurscht, was heut beschlos- | M G Berberich sen wird: I bin sowieso dagegn!“ | berberic@fmi.uni-passau.de (SPD-Stadtrat Kurt Schindler; Regensburg) | www.fmi.uni-passau.de/~berberic -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html