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| author | Eric Wheeler <git@linux.ewheeler.net> | 2016-08-18 20:15:26 -0700 |
|---|---|---|
| committer | Eric Wheeler <git@linux.ewheeler.net> | 2016-08-18 20:31:03 -0700 |
| commit | 90706094d5be614ae7285b3c96c3125bb198618c (patch) | |
| tree | 8eb365d5bbb95058e0180dbb1a819dc965b74103 /drivers/md/bcache | |
| parent | acc9cf8c66c66b2cbbdb4a375537edee72be64df (diff) | |
| download | linux-90706094d5be614ae7285b3c96c3125bb198618c.tar.gz linux-90706094d5be614ae7285b3c96c3125bb198618c.tar.bz2 linux-90706094d5be614ae7285b3c96c3125bb198618c.zip | |
bcache: pr_err: more meaningful error message when nr_stripes is invalid
The original error was thought to be corruption, but was actually caused by:
make-bcache --data-offset N
where N was in bytes and should have been in sectors. While userspace
tools should be updated to check --data-offset beyond end of volume,
hopefully this will help others that might not have noticed the units.
Signed-off-by: Eric Wheeler <bcache@linux.ewheeler.net>
Cc: Kent Overstreet <kent.overstreet@gmail.com>
Diffstat (limited to 'drivers/md/bcache')
| -rw-r--r-- | drivers/md/bcache/super.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index 6b93e1b77767..849ad441cd76 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -760,7 +760,8 @@ static int bcache_device_init(struct bcache_device *d, unsigned block_size, if (!d->nr_stripes || d->nr_stripes > INT_MAX || d->nr_stripes > SIZE_MAX / sizeof(atomic_t)) { - pr_err("nr_stripes too large"); + pr_err("nr_stripes too large or invalid: %u (start sector beyond end of disk?)", + (unsigned)d->nr_stripes); return -ENOMEM; } |