diff --git a/super-intel.c b/super-intel.c index 4b30024..69cab38 100644 --- a/super-intel.c +++ b/super-intel.c @@ -4248,6 +4248,8 @@ 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; @@ -4259,6 +4261,7 @@ 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); @@ -4293,6 +4296,8 @@ 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); @@ -4301,6 +4306,9 @@ 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) @@ -4308,6 +4316,14 @@ 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;