* [PATCH] SQUASHME: pnfs-obj: panlayout: Fix very old BUG_ONs on ol_state.status
@ 2010-05-27 14:52 Boaz Harrosh
2010-05-27 15:26 ` Staubach_Peter
2010-05-27 18:08 ` Benny Halevy
0 siblings, 2 replies; 4+ messages in thread
From: Boaz Harrosh @ 2010-05-27 14:52 UTC (permalink / raw)
To: Benny Halevy, open-osd, NFS list
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@panasas.com>
---
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 {
--
1.6.6.1
^ permalink raw reply related [flat|nested] 4+ messages in thread* RE: [PATCH] SQUASHME: pnfs-obj: panlayout: Fix very old BUG_ONs on ol_state.status
2010-05-27 14:52 [PATCH] SQUASHME: pnfs-obj: panlayout: Fix very old BUG_ONs on ol_state.status Boaz Harrosh
@ 2010-05-27 15:26 ` Staubach_Peter
[not found] ` <BF3BB6D12298F54B89C8DCC1E4073D80F2C566-1Zg0zMUlrbd9m/dOYFj4Yjjd7nCn89gW@public.gmane.org>
2010-05-27 18:08 ` Benny Halevy
1 sibling, 1 reply; 4+ messages in thread
From: Staubach_Peter @ 2010-05-27 15:26 UTC (permalink / raw)
To: bharrosh, bhalevy, osd-dev, linux-nfs
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^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH] SQUASHME: pnfs-obj: panlayout: Fix very old BUG_ONs on ol_state.status
2010-05-27 14:52 [PATCH] SQUASHME: pnfs-obj: panlayout: Fix very old BUG_ONs on ol_state.status Boaz Harrosh
2010-05-27 15:26 ` Staubach_Peter
@ 2010-05-27 18:08 ` Benny Halevy
1 sibling, 0 replies; 4+ messages in thread
From: Benny Halevy @ 2010-05-27 18:08 UTC (permalink / raw)
To: Boaz Harrosh; +Cc: open-osd, NFS list
On May. 27, 2010, 17:52 +0300, Boaz Harrosh <bharrosh@panasas.com> 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@panasas.com>
> ---
> 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
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2010-05-27 18:08 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2010-05-27 14:52 [PATCH] SQUASHME: pnfs-obj: panlayout: Fix very old BUG_ONs on ol_state.status Boaz Harrosh
2010-05-27 15:26 ` Staubach_Peter
[not found] ` <BF3BB6D12298F54B89C8DCC1E4073D80F2C566-1Zg0zMUlrbd9m/dOYFj4Yjjd7nCn89gW@public.gmane.org>
2010-05-27 16:31 ` Benny Halevy
2010-05-27 18:08 ` Benny Halevy
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