diff options
| author | Shaohua Li <shli@fb.com> | 2015-08-13 14:32:03 -0700 |
|---|---|---|
| committer | NeilBrown <neilb@suse.com> | 2015-11-01 13:48:26 +1100 |
| commit | 713cf5a63954bdc1cd4bed0a81e98cbd8fc5928c (patch) | |
| tree | c61c291f30e7dcc6e8913cc94c7478f4d4d19940 /drivers/md/raid5.c | |
| parent | 9c3e333d3f8b01407c8e9f78958e28a8594a0827 (diff) | |
| download | lwn-713cf5a63954bdc1cd4bed0a81e98cbd8fc5928c.tar.gz lwn-713cf5a63954bdc1cd4bed0a81e98cbd8fc5928c.zip | |
raid5: don't allow resize/reshape with cache(log) support
If cache(log) support is enabled, don't allow resize/reshape in current
stage. In the future, we can flush all data from cache(log) to raid
before resize/reshape and then allow resize/reshape.
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: NeilBrown <neilb@suse.com>
Diffstat (limited to 'drivers/md/raid5.c')
| -rw-r--r-- | drivers/md/raid5.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index a9604d4392ee..122702d957a6 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -6663,6 +6663,7 @@ static int run(struct mddev *mddev) int working_disks = 0; int dirty_parity_disks = 0; struct md_rdev *rdev; + struct md_rdev *journal_dev = NULL; sector_t reshape_offset = 0; int i; long long min_offset_diff = 0; @@ -6675,6 +6676,9 @@ static int run(struct mddev *mddev) rdev_for_each(rdev, mddev) { long long diff; + + if (test_bit(Journal, &rdev->flags)) + journal_dev = rdev; if (rdev->raid_disk < 0) continue; diff = (rdev->new_data_offset - rdev->data_offset); @@ -6708,6 +6712,12 @@ static int run(struct mddev *mddev) int chunk_sectors; int new_data_disks; + if (journal_dev) { + printk(KERN_ERR "md/raid:%s: don't support reshape with journal - aborting.\n", + mdname(mddev)); + return -EINVAL; + } + if (mddev->new_level != mddev->level) { printk(KERN_ERR "md/raid:%s: unsupported reshape " "required - aborting.\n", @@ -7218,6 +7228,8 @@ static int raid5_resize(struct mddev *mddev, sector_t sectors) sector_t newsize; struct r5conf *conf = mddev->private; + if (conf->log) + return -EINVAL; sectors &= ~((sector_t)conf->chunk_sectors - 1); newsize = raid5_size(mddev, sectors, mddev->raid_disks); if (mddev->external_size && @@ -7269,6 +7281,8 @@ static int check_reshape(struct mddev *mddev) { struct r5conf *conf = mddev->private; + if (conf->log) + return -EINVAL; if (mddev->delta_disks == 0 && mddev->new_layout == mddev->layout && mddev->new_chunk_sectors == mddev->chunk_sectors) |