While I was adding the SCTERC settings to my rc.local, I had a look over /sbin/blockdev --setra ... settings I do things like this, for example: /sbin/blockdev --setra 8192 /dev/mapper/myvg-large_media_files What about - the devices /dev/sd[ab]2 - the md device, /dev/md2 (which is the PV for LVM) ? Would it be correct to leave /dev/sd[ab]2 and /dev/md2 at defaults, and only specify larger sizes for LVs that need it? Or should I even make /dev/sd[ab]2 and /dev/md2 smaller than the default value (256)? Those disks are SATA - but I'm also planning to add in some SSDs and RAID1 them with md - they will hold things like source code and home directories (to make compiling and NFS home directories faster). Can anyone comment on the read ahead config or any other aspect of such a plan? -- 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
