[linux-lvm] Bugs in LVM and ext2: patch for LVM
Joe Thornber
joe at 66bassett.freeserve.co.uk
Thu Mar 1 09:12:18 UTC 2001
Urs,
Could you try the latest code from CVS ? (to be released tomorrow),
since Andrea Arcangeli has already supplied a similar patch.
- Joe
On Wed, Feb 28, 2001 at 06:53:33PM +0100, Urs Thuermann wrote:
> Urs Thuermann <urs at isnogud.escape.de> writes:
>
> > I've read lots of EXT2 and LVM src code and I think it turns out that
> > there is a bug in both. Andreas has already given the fix for the
> > ext2, a suggestion for LVM is below (sorry, no patch, I really know to
> > little about all the block sizes and buffers of block devices).
>
> Despite my limited knowledge of the src code for buffering and block
> devices I have made an patch which fixes the LVM problem for me. I'm
> not 100% sure it is correct and if it is the clean solution. Some
> kernel god should therefore take a look on it. At least I have
> running it here in my kernel.
>
>
> --- linux-2.4.2/drivers/md/lvm.c.orig Wed Feb 28 18:27:40 2001
> +++ linux-2.4.2/drivers/md/lvm.c Wed Feb 28 17:00:25 2001
> @@ -376,6 +376,8 @@
> static struct hd_struct lvm_hd_struct[MAX_LV];
> static int lvm_blocksizes[MAX_LV] =
> {0,};
> +static int lvm_hardsizes[MAX_LV] =
> +{0,};
> static int lvm_size[MAX_LV] =
> {0,};
> static struct gendisk lvm_gendisk =
> @@ -3035,11 +3037,12 @@
> lvm_gendisk.part[i].start_sect = -1; /* avoid partition check */
> lvm_size[i] = lvm_gendisk.part[i].nr_sects = 0;
> lvm_blocksizes[i] = BLOCK_SIZE;
> + lvm_hardsizes[i] = BLOCK_SIZE;
> }
>
> blk_size[MAJOR_NR] = lvm_size;
> blksize_size[MAJOR_NR] = lvm_blocksizes;
> - hardsect_size[MAJOR_NR] = lvm_blocksizes;
> + hardsect_size[MAJOR_NR] = lvm_hardsizes;
>
> return;
> } /* lvm_gen_init() */
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