|
 |
2c1b57 |
From 3b8c7127558bad386c8350e039061107c9cf6cde Mon Sep 17 00:00:00 2001
|
|
|
2c1b57 |
From: Song Liu <songliubraving@fb.com>
|
|
|
2c1b57 |
Date: Tue, 29 Aug 2017 09:53:02 -0700
|
|
|
2c1b57 |
Subject: [RHEL7.5 PATCH 03/13] mdadm: set journal_clean after scanning all
|
|
|
2c1b57 |
disks
|
|
|
2c1b57 |
|
|
|
2c1b57 |
Summary:
|
|
|
2c1b57 |
In Incremental.c:count_active(), max_events is tracked to show to
|
|
|
2c1b57 |
which devices are up to date. If a device has events==max_events+1,
|
|
|
2c1b57 |
getinfo_super() is called to reload the superblock from this
|
|
|
2c1b57 |
device. getinfo_super1() blindly set journal_clean to 0, which is
|
|
|
2c1b57 |
wrong.
|
|
|
2c1b57 |
|
|
|
2c1b57 |
This patch fixes this by tracking max_journal_events for all the
|
|
|
2c1b57 |
disks. After scanning all disks, journal_clean is set if
|
|
|
2c1b57 |
max_journal_events >= max_events-1.
|
|
|
2c1b57 |
|
|
|
2c1b57 |
Signed-off-by: Song Liu <songliubraving@fb.com>
|
|
|
2c1b57 |
Reviewed-by: NeilBrown <neilb@suse.com>
|
|
|
2c1b57 |
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
|
|
|
2c1b57 |
---
|
|
|
2c1b57 |
Incremental.c | 8 ++++++--
|
|
|
2c1b57 |
1 file changed, 6 insertions(+), 2 deletions(-)
|
|
|
2c1b57 |
|
|
|
2c1b57 |
diff --git a/Incremental.c b/Incremental.c
|
|
|
2c1b57 |
index 6cf2174..91301eb 100644
|
|
|
2c1b57 |
--- a/Incremental.c
|
|
|
2c1b57 |
+++ b/Incremental.c
|
|
|
2c1b57 |
@@ -684,6 +684,7 @@ static int count_active(struct supertype *st, struct mdinfo *sra,
|
|
|
2c1b57 |
int cnt = 0;
|
|
|
2c1b57 |
int replcnt = 0;
|
|
|
2c1b57 |
__u64 max_events = 0;
|
|
|
2c1b57 |
+ __u64 max_journal_events = 0;
|
|
|
2c1b57 |
char *avail = NULL;
|
|
|
2c1b57 |
int *best = NULL;
|
|
|
2c1b57 |
char *devmap = NULL;
|
|
|
2c1b57 |
@@ -714,8 +715,9 @@ static int count_active(struct supertype *st, struct mdinfo *sra,
|
|
|
2c1b57 |
|
|
|
2c1b57 |
info.array.raid_disks = raid_disks;
|
|
|
2c1b57 |
st->ss->getinfo_super(st, &info, devmap + raid_disks * devnum);
|
|
|
2c1b57 |
- if (info.disk.raid_disk == MD_DISK_ROLE_JOURNAL)
|
|
|
2c1b57 |
- bestinfo->journal_clean = 1;
|
|
|
2c1b57 |
+ if (info.disk.raid_disk == MD_DISK_ROLE_JOURNAL &&
|
|
|
2c1b57 |
+ info.events > max_journal_events)
|
|
|
2c1b57 |
+ max_journal_events = info.events;
|
|
|
2c1b57 |
if (!avail) {
|
|
|
2c1b57 |
raid_disks = info.array.raid_disks;
|
|
|
2c1b57 |
avail = xcalloc(raid_disks, 1);
|
|
|
2c1b57 |
@@ -765,6 +767,8 @@ static int count_active(struct supertype *st, struct mdinfo *sra,
|
|
|
2c1b57 |
replcnt++;
|
|
|
2c1b57 |
st->ss->free_super(st);
|
|
|
2c1b57 |
}
|
|
|
2c1b57 |
+ if (max_journal_events >= max_events - 1)
|
|
|
2c1b57 |
+ bestinfo->journal_clean = 1;
|
|
|
2c1b57 |
|
|
|
2c1b57 |
if (!avail)
|
|
|
2c1b57 |
return 0;
|
|
|
2c1b57 |
--
|
|
|
2c1b57 |
2.7.4
|
|
|
2c1b57 |
|