mdadm/SOURCES/0028-Create-Use-device-policies.patch

From f5a39b66f794322f30828389ddd488d17f578ad5 Mon Sep 17 00:00:00 2001
From: Mariusz Tkaczyk <mariusz.tkaczyk@linux.intel.com>
Date: Thu, 29 Feb 2024 12:52:12 +0100
Subject: [PATCH 28/41] Create: Use device policies

Generate and compare policies, abort if policies do not match.
It is tested for both create modes, with container and disk list
specified directly. It is used if supertype supports it.

For a case when disk list is specified, container may contain more
devices, so additional check on container is done to analyze all disks.

Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@linux.intel.com>
---
 Create.c | 31 +++++++++++++++++++++++++------
 1 file changed, 25 insertions(+), 6 deletions(-)

diff --git a/Create.c b/Create.c
index 0b776266..4397ff49 100644
--- a/Create.c
+++ b/Create.c
@@ -497,6 +497,7 @@ int Create(struct supertype *st, struct mddev_ident *ident, int subdevs,
 	 */
 	int mdfd;
 	unsigned long long minsize = 0, maxsize = 0;
+	dev_policy_t *custom_pols = NULL;
 	char *mindisc = NULL;
 	char *maxdisc = NULL;
 	char *name = ident->name;
@@ -588,6 +589,9 @@ int Create(struct supertype *st, struct mddev_ident *ident, int subdevs,
 				first_missing = subdevs * 2;
 				second_missing = subdevs * 2;
 				insert_point = subdevs * 2;
+
+				if (mddev_test_and_add_drive_policies(st, &custom_pols, fd, 1))
+					exit(1);
 			}
 		}
 		if (fd >= 0)
@@ -739,7 +743,7 @@ int Create(struct supertype *st, struct mddev_ident *ident, int subdevs,
 			close(dfd);
 			exit(2);
 		}
-		close(dfd);
+
 		info.array.working_disks++;
 		if (dnum < s->raiddisks && dv->disposition != 'j')
 			info.array.active_disks++;
@@ -812,6 +816,11 @@ int Create(struct supertype *st, struct mddev_ident *ident, int subdevs,
 			}
 		}
 
+		if (drive_test_and_add_policies(st, &custom_pols, dfd, 1))
+			exit(1);
+
+		close(dfd);
+
 		if (dv->disposition == 'j')
 			goto skip_size_check;  /* skip write journal for size check */
 
@@ -886,6 +895,7 @@ int Create(struct supertype *st, struct mddev_ident *ident, int subdevs,
 			close(fd);
 		}
 	}
+
 	if (missing_disks == dnum && !have_container) {
 		pr_err("Subdevs can't be all missing\n");
 		return 1;
@@ -1140,25 +1150,30 @@ int Create(struct supertype *st, struct mddev_ident *ident, int subdevs,
 		goto abort_locked;
 	}
 
-	if (did_default && c->verbose >= 0) {
+	if (did_default) {
 		if (is_subarray(info.text_version)) {
 			char devnm[MD_NAME_MAX];
 			struct mdinfo *mdi;
 
 			sysfs_get_container_devnm(&info, devnm);
 
-			mdi = sysfs_read(-1, devnm, GET_VERSION);
+			mdi = sysfs_read(-1, devnm, GET_VERSION | GET_DEVS);
 			if (!mdi) {
 				pr_err("Cannot open sysfs for container %s\n", devnm);
 				goto abort_locked;
 			}
 
-			pr_info("Creating array inside %s container /dev/%s\n", mdi->text_version,
-				devnm);
+			if (sysfs_test_and_add_drive_policies(st, &custom_pols, mdi, 1))
+				goto abort_locked;
+
+			if (c->verbose >= 0)
+				pr_info("Creating array inside %s container /dev/%s\n",
+					mdi->text_version, devnm);
 
 			sysfs_free(mdi);
-		} else
+		} else if (c->verbose >= 0) {
 			pr_info("Defaulting to version %s metadata\n", info.text_version);
+		}
 	}
 
 	map_update(&map, fd2devnm(mdfd), info.text_version,
@@ -1328,6 +1343,8 @@ int Create(struct supertype *st, struct mddev_ident *ident, int subdevs,
 	udev_unblock();
 	close(mdfd);
 	sysfs_uevent(&info, "change");
+	dev_policy_free(custom_pols);
+
 	return 0;
 
  abort:
@@ -1339,5 +1356,7 @@ int Create(struct supertype *st, struct mddev_ident *ident, int subdevs,
 
 	if (mdfd >= 0)
 		close(mdfd);
+
+	dev_policy_free(custom_pols);
 	return 1;
 }
-- 
2.40.1