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mdadm/0026-mdadm-block-update-ppl-for-non-raid456-levels.patch
CentOS Sources cb8cc1bf6c Auto sync2gitlab import of mdadm-4.2-7.el8.src.rpm
2023-01-20 10:15:30 +00:00

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From 70f1ff4291b0388adca1f4c91918ce1175e8b360 Mon Sep 17 00:00:00 2001
From: Lukasz Florczak <lukasz.florczak@linux.intel.com>
Date: Wed, 15 Jun 2022 14:28:39 +0200
Subject: [PATCH 26/83] mdadm: block update=ppl for non raid456 levels
Option ppl should be used only for raid levels 4, 5 and 6. Cancel update
for other levels.
Applied globally for imsm and ddf format.
Additionally introduce is_level456() helper function.
Signed-off-by: Lukasz Florczak <lukasz.florczak@linux.intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
---
Assemble.c | 11 +++++------
Grow.c | 2 +-
Manage.c | 14 ++++++++++++--
mdadm.h | 11 +++++++++++
super0.c | 2 +-
super1.c | 3 +--
6 files changed, 31 insertions(+), 12 deletions(-)
diff --git a/Assemble.c b/Assemble.c
index 4b213560..6df6bfbc 100644
--- a/Assemble.c
+++ b/Assemble.c
@@ -906,8 +906,7 @@ static int force_array(struct mdinfo *content,
* devices in RAID4 or last devices in RAID4/5/6.
*/
delta = devices[j].i.delta_disks;
- if (devices[j].i.array.level >= 4 &&
- devices[j].i.array.level <= 6 &&
+ if (is_level456(devices[j].i.array.level) &&
i/2 >= content->array.raid_disks - delta)
/* OK */;
else if (devices[j].i.array.level == 4 &&
@@ -1226,8 +1225,7 @@ static int start_array(int mdfd,
fprintf(stderr, ".\n");
}
if (content->reshape_active &&
- content->array.level >= 4 &&
- content->array.level <= 6) {
+ is_level456(content->array.level)) {
/* might need to increase the size
* of the stripe cache - default is 256
*/
@@ -1974,7 +1972,8 @@ int assemble_container_content(struct supertype *st, int mdfd,
int start_reshape;
char *avail;
int err;
- int is_raid456, is_clean, all_disks;
+ int is_clean, all_disks;
+ bool is_raid456;
if (sysfs_init(content, mdfd, NULL)) {
pr_err("Unable to initialize sysfs\n");
@@ -2107,7 +2106,7 @@ int assemble_container_content(struct supertype *st, int mdfd,
content->array.state |= 1;
}
- is_raid456 = (content->array.level >= 4 && content->array.level <= 6);
+ is_raid456 = is_level456(content->array.level);
is_clean = content->array.state & 1;
if (enough(content->array.level, content->array.raid_disks,
diff --git a/Grow.c b/Grow.c
index f6efbc48..8c520d42 100644
--- a/Grow.c
+++ b/Grow.c
@@ -2944,7 +2944,7 @@ static int impose_level(int fd, int level, char *devname, int verbose)
}
md_get_array_info(fd, &array);
- if (level == 0 && (array.level >= 4 && array.level <= 6)) {
+ if (level == 0 && is_level456(array.level)) {
/* To convert to RAID0 we need to fail and
* remove any non-data devices. */
int found = 0;
diff --git a/Manage.c b/Manage.c
index f789e0c1..e5e6abe4 100644
--- a/Manage.c
+++ b/Manage.c
@@ -307,7 +307,7 @@ int Manage_stop(char *devname, int fd, int verbose, int will_retry)
* - unfreeze reshape
* - wait on 'sync_completed' for that point to be reached.
*/
- if (mdi && (mdi->array.level >= 4 && mdi->array.level <= 6) &&
+ if (mdi && is_level456(mdi->array.level) &&
sysfs_attribute_available(mdi, NULL, "sync_action") &&
sysfs_attribute_available(mdi, NULL, "reshape_direction") &&
sysfs_get_str(mdi, NULL, "sync_action", buf, 20) > 0 &&
@@ -1679,6 +1679,7 @@ int Update_subarray(char *dev, char *subarray, char *update, struct mddev_ident
{
struct supertype supertype, *st = &supertype;
int fd, rv = 2;
+ struct mdinfo *info = NULL;
memset(st, 0, sizeof(*st));
@@ -1696,6 +1697,13 @@ int Update_subarray(char *dev, char *subarray, char *update, struct mddev_ident
if (mdmon_running(st->devnm))
st->update_tail = &st->updates;
+ info = st->ss->container_content(st, subarray);
+
+ if (strncmp(update, "ppl", 3) == 0 && !is_level456(info->array.level)) {
+ pr_err("RWH policy ppl is supported only for raid4, raid5 and raid6.\n");
+ goto free_super;
+ }
+
rv = st->ss->update_subarray(st, subarray, update, ident);
if (rv) {
@@ -1711,7 +1719,9 @@ int Update_subarray(char *dev, char *subarray, char *update, struct mddev_ident
pr_err("Updated subarray-%s name from %s, UUIDs may have changed\n",
subarray, dev);
- free_super:
+free_super:
+ if (info)
+ free(info);
st->ss->free_super(st);
close(fd);
diff --git a/mdadm.h b/mdadm.h
index d53df169..974415b9 100644
--- a/mdadm.h
+++ b/mdadm.h
@@ -796,6 +796,17 @@ static inline int is_fd_valid(int fd)
return (fd > -1);
}
+/**
+ * is_level456() - check whether given level is between inclusive 4 and 6.
+ * @level: level to check.
+ *
+ * Return: true if condition is met, false otherwise
+ */
+static inline bool is_level456(int level)
+{
+ return (level >= 4 && level <= 6);
+}
+
/**
* close_fd() - verify, close and unset file descriptor.
* @fd: pointer to file descriptor.
diff --git a/super0.c b/super0.c
index 61c9ec1d..37f595ed 100644
--- a/super0.c
+++ b/super0.c
@@ -683,7 +683,7 @@ static int update_super0(struct supertype *st, struct mdinfo *info,
int parity = sb->level == 6 ? 2 : 1;
rv = 0;
- if (sb->level >= 4 && sb->level <= 6 &&
+ if (is_level456(sb->level) &&
sb->reshape_position % (
sb->new_chunk/512 *
(sb->raid_disks - sb->delta_disks - parity))) {
diff --git a/super1.c b/super1.c
index 3a0c69fd..71af860c 100644
--- a/super1.c
+++ b/super1.c
@@ -1530,8 +1530,7 @@ static int update_super1(struct supertype *st, struct mdinfo *info,
* So we reject a revert-reshape unless the
* alignment is good.
*/
- if (__le32_to_cpu(sb->level) >= 4 &&
- __le32_to_cpu(sb->level) <= 6) {
+ if (is_level456(__le32_to_cpu(sb->level))) {
reshape_sectors =
__le64_to_cpu(sb->reshape_position);
reshape_chunk = __le32_to_cpu(sb->new_chunk);
--
2.38.1
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