On Mon, Jun 10, 2013 at 08:59:15AM -0600, Anand Jain wrote: > This adds two ioctl BTRFS_IOC_GET_FSIDS and BTRFS_IOC_GET_DEVS > which reads the btrfs_fs_devices and btrfs_device structure > from the kernel respectively. > > The information in these structure are useful to report the > device/fs information in line with the kernel operations and > thus immediately addresses the problem that 'btrfs fi show' > command reports the stale information after device device add > remove operation is performed. That is because btrfs fi show > reads the disks directly. > > Further the frame-work provided here would help to enhance > the btrfs-progs/library to read the other fs information and > its device information. Also the frame work provided here is > easily extensible to retrieve any other structure as future > needs. > > v1->v2: > .code optimized > .get the device generation number as well, so that > btrfs-progs could print using print_one_uuid > > Signed-off-by: Anand Jain <anand.jain@xxxxxxxxxx> In fact NACK altogether on this patch, you can get the same info out with the TREE_SEARCH ioctl, just do that in btrfs-progs and don't add yet another ioctl. Thanks, Josef -- 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
