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Add support for nvme disk detection 

This treats /dev/nvme.. devices the same way as /dev/sd... devices.  The
motivation behind this is that whole disk detection did not work on nvme
SSDs without that, because it DKC_UNKNOWN was returned for such devices.

Perhaps there should be a separate DKC_ type for this, but I don't know
enough about the code to know the implications of that.

Reviewed-by: Don Brady <don.brady@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: timor <timor.dd@googlemail.com>
Closes #7304
This commit is contained in:
timor 2018-03-21 16:35:20 +01:00 committed by Tony Hutter
parent 3eb3a13628
commit 6e627cc468
1 changed files with 14 additions and 0 deletions
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14
lib/libefi/rdwr_efi.c
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@ -300,6 +300,20 @@ efi_get_info(int fd, struct dk_cinfo *dki_info)
rval = sscanf(dev_path, "/dev/loop%[0-9]p%hu",
dki_info->dki_dname + 4,
&dki_info->dki_partition);
} else if ((strncmp(dev_path, "/dev/nvme", 9) == 0)) {
strcpy(dki_info->dki_cname, "nvme");
dki_info->dki_ctype = DKC_SCSI_CCS;
strcpy(dki_info->dki_dname, "nvme");
(void) sscanf(dev_path, "/dev/nvme%[0-9]",
dki_info->dki_dname + 4);
size_t controller_length = strlen(
dki_info->dki_dname);
strcpy(dki_info->dki_dname + controller_length,
"n");
rval = sscanf(dev_path,
"/dev/nvme%*[0-9]n%[0-9]p%hu",
dki_info->dki_dname + controller_length + 1,
&dki_info->dki_partition);
} else {
strcpy(dki_info->dki_dname, "unknown");
strcpy(dki_info->dki_cname, "unknown");