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zed: Fix mpath autoreplace on Centos 7 #13222

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merged 1 commit into from
Mar 18, 2022
Merged

zed: Fix mpath autoreplace on Centos 7 #13222

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11 changes: 4 additions & 7 deletions lib/libzutil/os/linux/zutil_device_path_os.c
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Original file line number Diff line number Diff line change
Expand Up @@ -613,27 +613,24 @@ zfs_get_underlying_path(const char *dev_name)
/*
* A disk is considered a multipath whole disk when:
* DEVNAME key value has "dm-"
* MPATH_DEVICE_READY is present
* DM_UUID key exists
* DM_UUID key exists and starts with 'mpath-'
* ID_PART_TABLE_TYPE key does not exist or is not gpt
* ID_FS_LABEL key does not exist (disk isn't labeled)
*/
static boolean_t
is_mpath_udev_sane(struct udev_device *dev)
{
const char *devname, *type, *uuid, *label, *mpath_ready;
const char *devname, *type, *uuid, *label;

devname = udev_device_get_property_value(dev, "DEVNAME");
type = udev_device_get_property_value(dev, "ID_PART_TABLE_TYPE");
uuid = udev_device_get_property_value(dev, "DM_UUID");
label = udev_device_get_property_value(dev, "ID_FS_LABEL");
mpath_ready = udev_device_get_property_value(dev, "MPATH_DEVICE_READY");

if ((devname != NULL && strncmp(devname, "/dev/dm-", 8) == 0) &&
((type == NULL) || (strcmp(type, "gpt") != 0)) &&
(uuid != NULL) &&
(label == NULL) &&
(mpath_ready != NULL && strncmp(mpath_ready, "1", 1) == 0)) {
((uuid != NULL) && (strncmp(uuid, "mpath-", 6) == 0)) &&
(label == NULL)) {
return (B_TRUE);
}

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