Fix problem with IMSM raid not being started correctly during boot

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
This commit is contained in:
Jes Sorensen 2011-10-19 13:53:41 +02:00
parent c6a442ba3e
commit 6c5cfe0908
5 changed files with 223 additions and 1 deletions

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@ -0,0 +1,79 @@
From 50177a4bbed446087dd2529b5518697f2f69de08 Mon Sep 17 00:00:00 2001
From: Jes Sorensen <Jes.Sorensen@redhat.com>
Date: Thu, 13 Oct 2011 19:35:07 +0200
Subject: [PATCH 1/3] Remove race for starting container devices.
This moves the lock handling out of Incremental_container() and relies
on the caller holding the lock. This prevents conflict with a
follow-on mdadm comment which may try and launch the device in
parallel.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
---
Incremental.c | 22 ++++++++++++----------
1 files changed, 12 insertions(+), 10 deletions(-)
diff --git a/Incremental.c b/Incremental.c
index 14184da..9fa6800 100644
--- a/Incremental.c
+++ b/Incremental.c
@@ -138,9 +138,15 @@ int Incremental(char *devname, int verbose, int runstop,
rv = st->ss->load_container(st, dfd, NULL);
close(dfd);
- if (!rv && st->ss->container_content)
- return Incremental_container(st, devname, homehost,
- verbose, runstop, autof);
+ if (!rv && st->ss->container_content) {
+ if (map_lock(&map))
+ fprintf(stderr, Name ": failed to get "
+ "exclusive lock on mapfile\n");
+ rv = Incremental_container(st, devname, homehost,
+ verbose, runstop, autof);
+ map_unlock(&map);
+ return rv;
+ }
fprintf(stderr, Name ": %s is not part of an md array.\n",
devname);
@@ -440,7 +446,6 @@ int Incremental(char *devname, int verbose, int runstop,
if (info.array.level == LEVEL_CONTAINER) {
int devnum = devnum; /* defined and used iff ->external */
/* Try to assemble within the container */
- map_unlock(&map);
sysfs_uevent(&info, "change");
if (verbose >= 0)
fprintf(stderr, Name
@@ -451,8 +456,9 @@ int Incremental(char *devname, int verbose, int runstop,
devnum = fd2devnum(mdfd);
close(mdfd);
sysfs_free(sra);
- rv = Incremental(chosen_name, verbose, runstop,
- NULL, homehost, require_homehost, autof);
+ rv = Incremental_container(st, chosen_name, homehost,
+ verbose, runstop, autof);
+ map_unlock(&map);
if (rv == 1)
/* Don't fail the whole -I if a subarray didn't
* have enough devices to start yet
@@ -1462,9 +1468,6 @@ static int Incremental_container(struct supertype *st, char *devname,
trustworthy = FOREIGN;
list = st->ss->container_content(st, NULL);
- if (map_lock(&map))
- fprintf(stderr, Name ": failed to get exclusive lock on "
- "mapfile\n");
/* do not assemble arrays that might have bad blocks */
if (list->array.state & (1<<MD_SB_BBM_ERRORS)) {
fprintf(stderr, Name ": BBM log found in metadata. "
@@ -1602,7 +1605,6 @@ static int Incremental_container(struct supertype *st, char *devname,
close(sfd);
}
domain_free(domains);
- map_unlock(&map);
return 0;
}
--
1.7.6.4

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@ -0,0 +1,45 @@
From 2eebfb2ed16c7c73fc46c3575160fa47c5fa51c5 Mon Sep 17 00:00:00 2001
From: Jes Sorensen <Jes.Sorensen@redhat.com>
Date: Mon, 17 Oct 2011 22:09:17 +0200
Subject: [PATCH 3/3] Hold the map lock while performing Assemble to avoid
races with udev
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
---
mdadm.c | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/mdadm.c b/mdadm.c
index e01beec..7fa8feb 100644
--- a/mdadm.c
+++ b/mdadm.c
@@ -1257,6 +1257,7 @@ int main(int argc, char *argv[])
} else {
struct mddev_ident *a, *array_list = conf_get_ident(NULL);
struct mddev_dev *devlist = conf_get_devs();
+ struct map_ent *map = NULL;
int cnt = 0;
int failures, successes;
if (devlist == NULL) {
@@ -1276,6 +1277,10 @@ int main(int argc, char *argv[])
if (a->autof == 0)
a->autof = autof;
}
+ if (map_lock(&map))
+ fprintf(stderr, Name " %s: failed to get "
+ "exclusive lock on mapfile\n",
+ __func__);
do {
failures = 0;
successes = 0;
@@ -1366,6 +1371,7 @@ int main(int argc, char *argv[])
fprintf(stderr, Name ": No arrays found in config file\n");
rv = 1;
}
+ map_unlock(&map);
}
break;
case BUILD:
--
1.7.6.4

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@ -0,0 +1,26 @@
From 91d610e0cb5a22685c6cc1d31b0ff3d4539a6c99 Mon Sep 17 00:00:00 2001
From: Jes Sorensen <Jes.Sorensen@redhat.com>
Date: Thu, 13 Oct 2011 19:46:52 +0200
Subject: [PATCH 2/3] Don't tell sysfs to launch the container as we are doing
it ourselves
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
---
Incremental.c | 1 -
1 files changed, 0 insertions(+), 1 deletions(-)
diff --git a/Incremental.c b/Incremental.c
index 9fa6800..55a4589 100644
--- a/Incremental.c
+++ b/Incremental.c
@@ -446,7 +446,6 @@ int Incremental(char *devname, int verbose, int runstop,
if (info.array.level == LEVEL_CONTAINER) {
int devnum = devnum; /* defined and used iff ->external */
/* Try to assemble within the container */
- sysfs_uevent(&info, "change");
if (verbose >= 0)
fprintf(stderr, Name
": container %s now has %d devices\n",
--
1.7.6.4

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@ -0,0 +1,56 @@
From b601104eb4a4733a838fb86e9e279fed14ce9d3f Mon Sep 17 00:00:00 2001
From: Lukasz Dorau <lukasz.dorau@intel.com>
Date: Mon, 10 Oct 2011 09:16:40 +1100
Subject: [PATCH] imsm: fix: stopped resync does not continue after
auto-assemblation
Resync stopped with "mdadm -Ss" command does not continue
after issuing "mdadm -As" command.
Signed-off-by: Lukasz Dorau <lukasz.dorau@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
---
mdadm.conf.5 | 5 ++++-
super-intel.c | 3 ++-
2 files changed, 6 insertions(+), 2 deletions(-)
--- mdadm-3.2.2/mdadm.conf.5.orig 2011-10-18 14:35:24.254923974 +0200
+++ mdadm-3.2.2/mdadm.conf.5 2011-10-18 14:35:36.231924727 +0200
@@ -439,7 +439,7 @@
of domains of all devices in that array. A spare can be automatically
moved from one array to another if the set of the destination array's
.I domains
-contains all the
+ppcontains all the
.I domains
of the new disk or if both arrays have the same
.IR spare-group .
@@ -463,6 +463,7 @@
.B path=
file glob matching anything from
.B /dev/disk/by-path
+.TP
.B type=
either
.B disk
@@ -471,6 +472,8 @@
.TP
.B action=
include, re-add, spare, spare-same-slot, or force-spare
+.B auto=
+yes, no, or homehost.
.P
The
--- mdadm-3.2.2/super-intel.c.orig 2011-10-18 14:34:24.000000000 +0200
+++ mdadm-3.2.2/super-intel.c 2011-10-18 14:36:23.356925467 +0200
@@ -2223,7 +2223,8 @@
info->custom_array_size = __le32_to_cpu(dev->size_high);
info->custom_array_size <<= 32;
info->custom_array_size |= __le32_to_cpu(dev->size_low);
- if (prev_map && map->map_state == prev_map->map_state) {
+ if (prev_map && map->map_state == prev_map->map_state &&
+ (migr_type(dev) == MIGR_GEN_MIGR)) {
info->reshape_active = 1;
info->new_level = get_imsm_raid_level(map);
info->new_layout = imsm_level_to_layout(info->new_level);

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@ -1,7 +1,7 @@
Summary: The mdadm program controls Linux md devices (software RAID arrays)
Name: mdadm
Version: 3.2.2
Release: 9%{?dist}
Release: 10%{?dist}
Source: http://www.kernel.org/pub/linux/utils/raid/mdadm/mdadm-%{version}.tar.bz2
Source1: mdmonitor.init
Source2: raid-check
@ -17,6 +17,10 @@ Patch2: mdadm-3.2.2-fixbuild.patch
Patch3: mdadm-3.2.2-readd.patch
Patch4: mdadm-3.2.2-writemostly.patch
Patch5: mdadm-3.2.2-attributes.patch
Patch6: mdadm-3.2.2-resync-does-not-continue-after-auto.patch
Patch7: mdadm-3.2.2-Remove-race-for-starting-container-devices.patch
Patch8: mdadm-3.2.2-no-sysfs-launch-container.patch
Patch9: mdadm-3.2.2-hold-lock-during-assemble.patch
Patch19: mdadm-3.1.3-udev.patch
Patch20: mdadm-2.5.2-static.patch
URL: http://www.kernel.org/pub/linux/utils/raid/mdadm/
@ -57,6 +61,10 @@ is not used as the system init process.
%patch3 -p1 -b .readd
%patch4 -p1 -b .writemostly
%patch5 -p1 -b .attributes
%patch6 -p1 -b .resync
%patch7 -p1 -b .container
%patch8 -p1 -b .sysfs
%patch9 -p1 -b .assemble
%patch19 -p1 -b .udev
%patch20 -p1 -b .static
@ -131,6 +139,14 @@ fi
%{_initrddir}/*
%changelog
* Wed Oct 19 2011 Jes Sorensen <Jes.Sorensen@redhat.com> - 3.2.2-10
- Fix problem where a dirty IMSM RAID isn't assembled correctly during
boot, preventing booting from this RAID device.
- Resolves: bz736387 (Fedora 15) bz744217 (Fedora 16)
- Fix race between udev and mdadm when assembling md device using
mdadm -I, where udev would spawn an additional mdadm command to
perform the assembly in parallel.
* Wed Aug 31 2011 Doug Ledford <dledford@redhat.com> - 3.2.2-9
- Fix boot with older imsm arrays that have an unused attribute set
- Resolves: bz729205