On May. 27, 2010, 17:52 +0300, Boaz Harrosh <bharrosh@xxxxxxxxxxx> wrote:
>
> OK This is definitely my stupidity when converting panfs_shim to the
> new objlayout_read/write_done() API. But that was very, very long
> time ago. Did we not test panlayout since then.
>
> So I fixed the stale check on ol_state.status which is never set
> until much later inside the call to generic layer.
>
> While at it I converted the BUG_ONs to WARN_ONs because it could
> be data corruption but otherwise it will not crush the Kernel.
> Better continue to be able to debug it better. (And added missing
> information to the WARN_ON)
>
> Congratulation, I've successfully ran all tests over
> panfs-export/panfs_shim over real Panasas HW. With latest code.
> [ This is with the new panfs-export that is also compatible with
> the std objects layout driver. Patches to that will follow]
>
> TODO:
> I should also simulate/cause some IO errors and see that
> errors are reported at layout_return
>
> Signed-off-by: Boaz Harrosh <bharrosh@xxxxxxxxxxx>
> ---
> fs/nfs/objlayout/panfs_shim.c | 19 +++++++++++++------
> 1 files changed, 13 insertions(+), 6 deletions(-)
>
> diff --git a/fs/nfs/objlayout/panfs_shim.c b/fs/nfs/objlayout/panfs_shim.c
> index 414831e..c34fb5c 100644
> --- a/fs/nfs/objlayout/panfs_shim.c
> +++ b/fs/nfs/objlayout/panfs_shim.c
> @@ -421,9 +421,12 @@ panfs_shim_read_done(
> rc = res_p->result;
> if (rc == PAN_SUCCESS) {
> status = res_p->length;
> - BUG_ON(state->ol_state.status < 0);
> - BUG_ON((pan_stor_len_t)state->ol_state.status !=
> - state->u.read.res.length);
> + WARN_ON(status < 0);
> + if (WARN_ON((pan_stor_len_t)status != state->u.read.res.length))
> + printk(KERN_ERR
> + "%s: status(0x%llx) != read.res.length(0x%llx)\n",
> + __func__, (u64)status,
> + (u64)state->u.read.res.length);
> } else {
> status = -panfs_export_ops->convert_rc(rc);
> dprintk("%s: pan_sam_read rc %d: status %Zd\n",
> @@ -499,9 +502,13 @@ panfs_shim_write_done(
> if (rc == PAN_SUCCESS) {
> state->ol_state.committed = NFS_FILE_SYNC;
> status = res_p->length;
> - BUG_ON(state->ol_state.status < 0);
> - BUG_ON((pan_stor_len_t)state->ol_state.status !=
> - state->u.write.res.length);
> + WARN_ON(status < 0);
> + if (WARN_ON((pan_stor_len_t)status != state->u.write.res.length))
> + printk(KERN_ERR
> + "%s: status(0x%llx) != write.res.length(0x%llx)\n",
> + __func__, (u64)status,
> + (u64)state->u.write.res.length);
> +
> objlayout_add_delta_space_used(&state->ol_state,
> res_p->delta_capacity_used);
> } else {
Merged for (2.6.34) pnfs-all-latest and pnfs-all-2.6.33.
Thanks!
Benny
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