On Tue, Feb 21, 2012 at 12:51:57AM +0600, Roman Mamedov wrote: > Hello, > > I have noticed I have the following in my dmesg: > > [319769.043163] nbd: registered device at major 43 > [319769.104176] nbd11: unknown partition table > [319769.130273] device fsid c2598ff2-1e3e-4edf-ab19-1f7ab41b0160 devid 1 transid 125743 /dev/nbd11 > [319769.130522] btrfs: force lzo compression > [319769.130528] btrfs: disk space caching is enabled > [319802.926547] Btrfs detected SSD devices, enabling SSD mode > > The /dev/nbd11 device itself is not an SSD, it's an LVM volume situated on a > RAID5 array of regular hard drives, exported via NBD from another computer. > > https://en.wikipedia.org/wiki/Network_block_device Btrfs pulls this information from the rotational flag on the block device. A few different devices set this incorrectly, but it's up to the admin to flag it in /sys/block/xxx if they want something other than the default. -chris -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
