From: Adam Kwolek <adam.kwolek@xxxxxxxxx>
When metadata is saved and there is no general migration in progress
/in container/ clear migration record in container.
Signed-off-by: Adam Kwolek <adam.kwolek@xxxxxxxxx>
Signed-off-by: Krzysztof Wojcik <krzysztof.wojcik@xxxxxxxxx>
---
super-intel.c | 16 ++++++++++++++++
1 files changed, 16 insertions(+), 0 deletions(-)
diff --git a/super-intel.c b/super-intel.c
index d2393c2..db2f2b9 100644
--- a/super-intel.c
+++ b/super-intel.c
@@ -4254,6 +4254,8 @@ static int write_super_imsm_spares(struct intel_super *super, int doclose)
return 0;
}
+static int is_gen_migration(struct imsm_dev *dev);
+
static int write_super_imsm(struct supertype *st, int doclose)
{
struct intel_super *super = st->sb;
@@ -4265,6 +4267,7 @@ static int write_super_imsm(struct supertype *st, int doclose)
int i;
__u32 mpb_size = sizeof(struct imsm_super) - sizeof(struct imsm_disk);
int num_disks = 0;
+ int clear_migration_record = 1;
/* 'generation' is incremented everytime the metadata is written */
generation = __le32_to_cpu(mpb->generation_num);
@@ -4299,6 +4302,8 @@ static int write_super_imsm(struct supertype *st, int doclose)
imsm_copy_dev(dev, dev2);
mpb_size += sizeof_imsm_dev(dev, 0);
}
+ if (is_gen_migration(dev2))
+ clear_migration_record = 0;
}
mpb_size += __le32_to_cpu(mpb->bbm_log_size);
mpb->mpb_size = __cpu_to_le32(mpb_size);
@@ -4307,6 +4312,9 @@ static int write_super_imsm(struct supertype *st, int doclose)
sum = __gen_imsm_checksum(mpb);
mpb->check_sum = __cpu_to_le32(sum);
+ if (clear_migration_record)
+ memset(super->migr_rec_buf, 0, 512);
+
/* write the mpb for disks that compose raid devices */
for (d = super->disks; d ; d = d->next) {
if (d->index < 0)
@@ -4314,6 +4322,14 @@ static int write_super_imsm(struct supertype *st, int doclose)
if (store_imsm_mpb(d->fd, mpb))
fprintf(stderr, "%s: failed for device %d:%d %s\n",
__func__, d->major, d->minor, strerror(errno));
+ if (clear_migration_record) {
+ unsigned long long dsize;
+
+ get_dev_size(d->fd, NULL, &dsize);
+ if (lseek64(d->fd, dsize - 512, SEEK_SET) >= 0) {
+ write(d->fd, super->migr_rec_buf, 512);
+ }
+ }
if (doclose) {
close(d->fd);
d->fd = -1;
--
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