Why is it that the read operations are 0 but the read bandwidth is >0? What is iostat [not] accounting for? Is it the metadata reads? (Is it possible to determine what kind of metadata reads these are?
I plan to have 3 disks and am debating what I should do with them, if I should do a raidz (single or double parity) or just a mirror. As per some of the blog entries, I've been reading that raidz may not be that suitable for lot of random reads. With the # of reads below, I don't see any reason why I should consider that. I would like to proceed with doing a raidz with double parity, please give me some feedback. Thanks, Anil capacity operations bandwidth pool used avail read write read write ---------- ----- ----- ----- ----- ----- ----- data1 41.6G 5.67G 2 19 52.3K 198K data2 58.2G 9.83G 3 44 60.5K 180K ---------- ----- ----- ----- ----- ----- ----- data1 41.6G 5.66G 0 21 11.3K 151K data2 58.2G 9.83G 0 44 158 140K ---------- ----- ----- ----- ----- ----- ----- data1 41.6G 5.66G 0 18 436 117K data2 58.2G 9.83G 0 44 203 149K ---------- ----- ----- ----- ----- ----- ----- data1 41.6G 5.66G 0 20 1.49K 167K data2 58.2G 9.83G 0 44 331 154K ---------- ----- ----- ----- ----- ----- ----- data1 41.6G 5.66G 0 21 791 166K data2 58.2G 9.83G 0 46 199 167K ---------- ----- ----- ----- ----- ----- ----- data1 41.6G 5.66G 0 25 686 364K data2 58.2G 9.83G 0 45 35.9K 152K ---------- ----- ----- ----- ----- ----- ----- data1 41.6G 5.66G 0 19 698 129K data2 58.2G 9.83G 0 43 81 146K ---------- ----- ----- ----- ----- ----- ----- data1 41.6G 5.66G 0 19 1.45K 141K data2 58.2G 9.82G 0 44 59 139K ---------- ----- ----- ----- ----- ----- ----- data1 41.6G 5.66G 0 19 436 124K data2 58.2G 9.82G 0 43 71 145K ---------- ----- ----- ----- ----- ----- ----- data1 41.6G 5.66G 0 21 412 150K data2 58.2G 9.82G 0 41 114 138K ---------- ----- ----- ----- ----- ----- ----- data1 41.6G 5.66G 0 20 1.35K 128K data2 58.2G 9.82G 0 47 918 160K ---------- ----- ----- ----- ----- ----- ----- _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss