On 01/31/14 10:29, Hannes Reinecke wrote:
> + if (!target_id_size) {
> + /* Check for EMC Clariion extended inquiry */
> + if (!strncmp(sdev->vendor, "DGC ", 8) &&
> + sdev->inquiry_len > 160) {
> + target_id_size = sdev->inquiry[160];
> + target_id = sdev->inquiry + 161;
> + strcpy(target_id_str, "emc.");
> + memcpy(target_id_str + 4, target_id, target_id_size);
> + }
> + /* Check for HP EVA extended inquiry */
> + if (!strncmp(sdev->vendor, "HP ", 8) &&
> + !strncmp(sdev->model, "HSV", 3) &&
> + sdev->inquiry_len > 170) {
> + target_id_size = 16;
> + target_id = sdev->inquiry + 154;
> + strcpy(target_id_str, "naa.");
> + memcpy(target_id_str + 4, target_id, target_id_size);
> + }
> + }
Being able to identify a storage array unambiguously is essential for
the new ALUA device handler algorithm introduced by this patch series.
What if a new storage array is introduced that is not covered by one of
the heuristics in this patch ? Has it been considered to let storage
array identification occur in user space instead of in the kernel ?
Thanks,
Bart.
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