On Wed, Sep 12, 2007 at 03:27:20PM +0200, Matthias Koenig wrote:
Hi Matthias,
can I have the metadata samples created with your patch applied
via "dmraid -rd" (tar/brzip2) ?
We got to do more than support recovery, ie. the mapping needs to work around
the strange metadata location.
Heinz
w
> Index: 1.0.0.rc14/lib/format/ataraid/pdc.c
> ===================================================================
> --- 1.0.0.rc14.orig/lib/format/ataraid/pdc.c
> +++ 1.0.0.rc14/lib/format/ataraid/pdc.c
> @@ -155,6 +155,21 @@ static void *pdc_read_metadata(struct li
> }
> }
>
> + /* Some pdc card detect only PDC_MAX_SECTOR sectors, even
> + * if the disk is bigger, this prevents dmraid from discovering
> + * the metadata. This quirk searches for metadata at the
> + * sector PDC_MAX_SECTOR
> + */
> + if (di->sectors >= PDC_MAX_SECTOR) {
> + if (read_file(lc, handler, di->path, ret, sizeof(*ret),
> + PDC_MAX_SECTOR << 9) &&
> + !strncmp((const char*) ret->promise_id, PDC_MAGIC,
> + PDC_ID_LENGTH)) {
> + info->u32 = PDC_MAX_SECTOR;
> + return (void*) ret;
> + }
> + }
> +
> dbg_free(ret);
> }
>
> Index: 1.0.0.rc14/lib/format/ataraid/pdc.h
> ===================================================================
> --- 1.0.0.rc14.orig/lib/format/ataraid/pdc.h
> +++ 1.0.0.rc14/lib/format/ataraid/pdc.h
> @@ -16,6 +16,9 @@
> #define PDC_CONFIGOFFSETS 63,255,256,16,399,735
> #define PDC_DATAOFFSET 0
>
> +/* maximum device size (sectors) which can be detected by some pdc card */
> +#define PDC_MAX_SECTOR 268435377UL
> +
> /* Ondisk metadata for Promise Fastrack */
> struct pdc {
> #define PDC_ID_LENGTH 24
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Heinz Mauelshagen Red Hat GmbH
Consulting Development Engineer Am Sonnenhang 11
Storage Development 56242 Marienrachdorf
Germany
Mauelshagen@xxxxxxxxxx PHONE +49 171 7803392
FAX +49 2626 924446
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