[PATCH v2] mdadm: set journal_clean after scanning all disks
From: Song Liu <hidden>
Date: 2017-08-29 16:53:02
Subsystem:
the rest · Maintainer:
Linus Torvalds
Summary: In Incremental.c:count_active(), max_events is tracked to show to which devices are up to date. If a device has events==max_events+1, getinfo_super() is called to reload the superblock from this device. getinfo_super1() blindly set journal_clean to 0, which is wrong. This patch fixes this by tracking max_journal_events for all the disks. After scanning all disks, journal_clean is set if max_journal_events >= max_events-1. Signed-off-by: Song Liu <redacted> --- Incremental.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/Incremental.c b/Incremental.c
index 6cf2174..91301eb 100644
--- a/Incremental.c
+++ b/Incremental.c@@ -684,6 +684,7 @@ static int count_active(struct supertype *st, struct mdinfo *sra, int cnt = 0; int replcnt = 0; __u64 max_events = 0; + __u64 max_journal_events = 0; char *avail = NULL; int *best = NULL; char *devmap = NULL;
@@ -714,8 +715,9 @@ static int count_active(struct supertype *st, struct mdinfo *sra, info.array.raid_disks = raid_disks; st->ss->getinfo_super(st, &info, devmap + raid_disks * devnum); - if (info.disk.raid_disk == MD_DISK_ROLE_JOURNAL) - bestinfo->journal_clean = 1; + if (info.disk.raid_disk == MD_DISK_ROLE_JOURNAL && + info.events > max_journal_events) + max_journal_events = info.events; if (!avail) { raid_disks = info.array.raid_disks; avail = xcalloc(raid_disks, 1);
@@ -765,6 +767,8 @@ static int count_active(struct supertype *st, struct mdinfo *sra, replcnt++; st->ss->free_super(st); } + if (max_journal_events >= max_events - 1) + bestinfo->journal_clean = 1; if (!avail) return 0;
--
2.9.5