[linux-lvm] LVM with devfs
Luca Berra
bluca at comedia.it
Tue Feb 27 22:42:26 UTC 2001
On Tue, Feb 27, 2001 at 02:36:04PM -0800, Ralph Jennings wrote:
> In case anybody cares, I have an experience here to share:
>
> When I do a pvcreate on /dev/md/3 with devfs, pvcreate says file
> doesn't exist (talking about /dev/md/3).
patch for /proc/partitions attacched
> Also dies with /dev/discs/disc1/part1. (problem with symlinks?)
> When I use /dev/ide/host0/bus1/target0/lun0/part1 it works.
yes, it doesn't not follow symlinks
--
Luca Berra -- bluca at comedia.it
Communication Media & Services S.r.l.
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-------------- next part --------------
--- linux-2.4.1-ac9/drivers/md/md.c.bluca.orig Mon Feb 12 08:59:30 2001
+++ linux-2.4.1-ac9/drivers/md/md.c Mon Feb 12 09:07:09 2001
@@ -3606,6 +3606,8 @@
int md__init md_init (void)
{
static char * name = "mdrecoveryd";
+ unsigned int minor;
+ char devname[128];
printk (KERN_INFO "md driver %d.%d.%d MAX_MD_DEVS=%d, MD_SB_DISKS=%d\n",
MD_MAJOR_VERSION, MD_MINOR_VERSION,
@@ -3617,9 +3619,14 @@
return (-1);
}
devfs_handle = devfs_mk_dir (NULL, "md", NULL);
- devfs_register_series (devfs_handle, "%u",MAX_MD_DEVS,DEVFS_FL_DEFAULT,
- MAJOR_NR, 0, S_IFBLK | S_IRUSR | S_IWUSR,
- &md_fops, NULL);
+ /* we don't use devfs_register_series because we want to fill md_hd_struct */
+ for (minor=0; minor < MAX_MD_DEVS; ++minor)
+ {
+ sprintf (devname, "%u", minor);
+ md_hd_struct[minor].de = devfs_register (devfs_handle,
+ devname, DEVFS_FL_DEFAULT, MAJOR_NR, minor,
+ S_IFBLK | S_IRUSR | S_IWUSR, &md_fops, NULL);
+ }
/* forward all md request to md_make_request */
blk_queue_make_request(BLK_DEFAULT_QUEUE(MAJOR_NR), md_make_request);
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