From 07719ff767dcd8cc42050f185d332052f3816546 Mon Sep 17 00:00:00 2001
From: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Date: Fri, 29 Sep 2017 22:54:19 +0200
Subject: [PATCH] raid5-ppl: check recovery_offset when performing ppl recovery
Patch-mainline: v4.15-rc1
Git-commit: 07719ff767dcd8cc42050f185d332052f3816546
References: fate#323095
If starting an array that is undergoing rebuild, make ppl recovery honor
the recovery_offset of a member disk and don't read data that is not yet
in-sync.
Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: Coly Li <colyli@suse.de>
---
drivers/md/raid5-ppl.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/md/raid5-ppl.c b/drivers/md/raid5-ppl.c
index 76d6245427b8..628c0bf7b9fd 100644
--- a/drivers/md/raid5-ppl.c
+++ b/drivers/md/raid5-ppl.c
@@ -758,7 +758,8 @@ static int ppl_recover_entry(struct ppl_log *log, struct ppl_header_entry *e,
(unsigned long long)sector);
rdev = conf->disks[dd_idx].rdev;
- if (!rdev) {
+ if (!rdev || (!test_bit(In_sync, &rdev->flags) &&
+ sector >= rdev->recovery_offset)) {
pr_debug("%s:%*s data member disk %d missing\n",
__func__, indent, "", dd_idx);
update_parity = false;
--
2.13.6