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Fix Xen Virtual Block Device detection

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We fail to make partitions on xvd (Xen Virtual Block) devices. This also
causes debug builds of zpool create to return an error when given xen
virtual block devices. These devices should be given the same treatment
as vd (KVM Virtual Block) devices, so we adjust the relevant code paths.

Signed-off-by: Richard Yao <ryao@gentoo.org>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #3576
This commit is contained in:
Richard Yao 2015-07-06 11:20:11 -04:00 committed by Brian Behlendorf
parent 98cb3a7655
commit 541da9935d
2 changed files with 11 additions and 2 deletions
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6
lib/libefi/rdwr_efi.c
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@ -204,6 +204,12 @@ efi_get_info(int fd, struct dk_cinfo *dki_info)
rval = sscanf(dev_path, "/dev/%[a-zA-Z]%hu",
dki_info->dki_dname,
&dki_info->dki_partition);
} else if ((strncmp(dev_path, "/dev/xvd", 8) == 0)) {
strcpy(dki_info->dki_cname, "xvd");
dki_info->dki_ctype = DKC_MD;
rval = sscanf(dev_path, "/dev/%[a-zA-Z]%hu",
dki_info->dki_dname,
&dki_info->dki_partition);
} else if ((strncmp(dev_path, "/dev/dm-", 8) == 0)) {
strcpy(dki_info->dki_cname, "pseudo");
dki_info->dki_ctype = DKC_VBD;

7
lib/libzfs/libzfs_pool.c
View File

@ -3378,7 +3378,7 @@ set_path(zpool_handle_t *zhp, nvlist_t *nv, const char *path)
* forms: "-partX", "pX", or "X", where X is a string of digits. The second
* case only occurs when the suffix is preceded by a digit, i.e. "md0p0" The
* third case only occurs when preceded by a string matching the regular
* expression "^[hs]d[a-z]+", i.e. a scsi or ide disk.
* expression "^([hsv]|xv)d[a-z]+", i.e. a scsi, ide, virtio or xen disk.
*/
static char *
strip_partition(libzfs_handle_t *hdl, char *path)
@ -3391,8 +3391,11 @@ strip_partition(libzfs_handle_t *hdl, char *path)
} else if ((part = strrchr(tmp, 'p')) &&
part > tmp + 1 && isdigit(*(part-1))) {
d = part + 1;
} else if ((tmp[0] == 'h' || tmp[0] == 's') && tmp[1] == 'd') {
} else if ((tmp[0] == 'h' || tmp[0] == 's' || tmp[0] == 'v') &&
tmp[1] == 'd') {
for (d = &tmp[2]; isalpha(*d); part = ++d);
} else if (strncmp("xvd", tmp, 3) == 0) {
for (d = &tmp[3]; isalpha(*d); part = ++d);
}
if (part && d && *d != '\0') {
for (; isdigit(*d); d++);