Hi Hans,
On Tue, Jul 14, 2009 at 10:24:43PM +0200, Hans de Goede wrote:
> This patch currently assumes this new utility (code included) will become
> part of udev and will live in /lib/udev, for now it is probably a good idea
I hope not. The utility duplicate partx(8) / delpart(8) code.
> --- a/modules.d/90mdraid/65-md-incremental-imsm.rules
> +++ b/modules.d/90mdraid/65-md-incremental-imsm.rules
> @@ -6,5 +6,6 @@ SUBSYSTEM=="block", ACTION=="add", \
> ENV{ID_FS_TYPE}=="linux_raid_member|isw_raid_member", \
> TEST!="/tmp/.mdraid_start-%k", \
> IMPORT{program}="/sbin/mdadm --examine --export $tempnode", \
>+ RUN+="/lib/udev/rm_partitions $env{DEVNAME}", \
+ RUN+=/sbin/partx -d $env{DEVNAME}", \
> +static int remove_partitions(const char *device_node)
> +{
> + struct blkpg_partition part = { 0, };
> + struct blkpg_ioctl_arg io = {
> + .op = BLKPG_DEL_PARTITION,
> + .datalen = sizeof(part),
> + .data = &part,
> + };
> +
> + int fd = open(device_node, O_RDWR);
> + if (fd < 0) {
> + fprintf(stderr, "Error opening %s: %s\n", device_node,
> + strerror(errno));
> + return -1;
> + }
> +
> + /* There is no way to enumerate partitions */
/proc/partitions or /sys/block/<disk>/<disk>[N] or at least
use the limit from /sys/block/<disk>/range.
Unfortunately, partx is also blind and does not use any precisely
defined list/range of partitions.
> + for (part.pno = 1; part.pno <= 256; part.pno++) {
> + if (ioctl(fd, BLKPG, &io) < 0 && errno != ENXIO &&
> + (part.pno < 16 || errno != EINVAL)) {
> + fprintf(stderr,
> + "Error removing part %d from %s: %s\n",
> + part.pno, device_node,
> + strerror(errno));
> + return -1;
> + }
> + }
Karel
--
Karel Zak <[email protected]>
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