Re: /dev/loop0 over lvm... leading to d-state :-(

Jens Axboe (axboe@suse.de)
Thu, 5 Apr 2001 07:13:13 +0200


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On Wed, Apr 04 2001, Herbert Valerio Riedel wrote:
>
> fyi, loop devices over lvm LV's dont work for me...
>
> I've tested with 2.4.3final (and some other 2.4.3 derivates) and two
> lvm'ized partitions with a size of about 1gig each; mke2fs
> just goes into D-state and stays there when applying it to /dev/loop0,
> running it directly on the LV-device works...

this would appear to be an lvm bug, could you try this patch? it's
untested, let me know if it doesn't work and I'll try and reproduce
here.

-- 
Jens Axboe

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--- /opt/kernel/linux-2.4.3/drivers/md/lvm.c Mon Jan 29 01:11:20 2001 +++ drivers/md/lvm.c Thu Apr 5 07:12:14 2001 @@ -1480,14 +1480,14 @@ */ static int lvm_map(struct buffer_head *bh, int rw) { - int minor = MINOR(bh->b_dev); + int minor = MINOR(bh->b_rdev); int ret = 0; ulong index; ulong pe_start; ulong size = bh->b_size >> 9; ulong rsector_tmp = bh->b_blocknr * size; ulong rsector_sav; - kdev_t rdev_tmp = bh->b_dev; + kdev_t rdev_tmp = bh->b_rdev; kdev_t rdev_sav; vg_t *vg_this = vg[VG_BLK(minor)]; lv_t *lv = vg_this->lv[LV_BLK(minor)];

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