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| author | Lars Ellenberg <lars.ellenberg@linbit.com> | 2010-11-10 10:36:52 +0100 |
|---|---|---|
| committer | Philipp Reisner <philipp.reisner@linbit.com> | 2011-03-10 11:19:08 +0100 |
| commit | 470be44ab1841f3261a4d758450a42e6b79e9551 (patch) | |
| tree | 1e6532855e065408b6e838bd27fe36629fb18487 /drivers/block/drbd/drbd_receiver.c | |
| parent | 5f9915bbb8e0975ce99f893c29b8e89100b33399 (diff) | |
| download | op-kernel-dev-470be44ab1841f3261a4d758450a42e6b79e9551.zip op-kernel-dev-470be44ab1841f3261a4d758450a42e6b79e9551.tar.gz | |
drbd: detect modification of in-flight buffers
With data-integrity digest enabled, double-check on the sending side
for modifications by upper layers of buffers under write back,
so we can tell it appart from corruption on the "wire".
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'drivers/block/drbd/drbd_receiver.c')
| -rw-r--r-- | drivers/block/drbd/drbd_receiver.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c index d0e19a2..ca213c6 100644 --- a/drivers/block/drbd/drbd_receiver.c +++ b/drivers/block/drbd/drbd_receiver.c @@ -1281,7 +1281,8 @@ read_in_block(struct drbd_conf *mdev, u64 id, sector_t sector, int data_size) __ if (dgs) { drbd_csum_ee(mdev, mdev->integrity_r_tfm, e, dig_vv); if (memcmp(dig_in, dig_vv, dgs)) { - dev_err(DEV, "Digest integrity check FAILED.\n"); + dev_err(DEV, "Digest integrity check FAILED: %llus +%u\n", + (unsigned long long)sector, data_size); drbd_bcast_ee(mdev, "digest failed", dgs, dig_in, dig_vv, e); drbd_free_ee(mdev, e); |
