This is a note to let you know that I've just added the patch titled
pnfs-obj: Fix the comp_index != 0 case
to the 3.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
pnfs-obj-fix-the-comp_index-0-case.patch
and it can be found in the queue-3.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <sta...@kernel.org> know about it.
>From 9af7db3228acc286c50e3a0f054ec982efdbc6c6 Mon Sep 17 00:00:00 2001
From: Boaz Harrosh <bharr...@panasas.com>
Date: Wed, 3 Aug 2011 21:52:51 -0700
Subject: pnfs-obj: Fix the comp_index != 0 case
From: Boaz Harrosh <bharr...@panasas.com>
commit 9af7db3228acc286c50e3a0f054ec982efdbc6c6 upstream.
There were bugs in the case of partial layout where olo_comp_index
is not zero. This used to work and was tested but one of the later
cleanup SQUASHMEs broke it and was not tested since.
Also add a dprint that specify those received layout parameters.
Everything else was already printed.
Signed-off-by: Boaz Harrosh <bharr...@panasas.com>
Signed-off-by: Trond Myklebust <trond.mykleb...@netapp.com>
Signed-off-by: Greg Kroah-Hartman <gre...@suse.de>
---
fs/nfs/objlayout/objio_osd.c | 16 +++++++---------
fs/nfs/objlayout/pnfs_osd_xdr_cli.c | 3 +++
2 files changed, 10 insertions(+), 9 deletions(-)
--- a/fs/nfs/objlayout/objio_osd.c
+++ b/fs/nfs/objlayout/objio_osd.c
@@ -479,7 +479,6 @@ static int _io_check(struct objio_state
for (i = 0; i < ios->numdevs; i++) {
struct osd_sense_info osi;
struct osd_request *or = ios->per_dev[i].or;
- unsigned dev;
int ret;
if (!or)
@@ -500,9 +499,8 @@ static int _io_check(struct objio_state
continue; /* we recovered */
}
- dev = ios->per_dev[i].dev;
- objlayout_io_set_result(&ios->ol_state, dev,
- &ios->layout->comps[dev].oc_object_id,
+ objlayout_io_set_result(&ios->ol_state, i,
+ &ios->layout->comps[i].oc_object_id,
osd_pri_2_pnfs_err(osi.osd_err_pri),
ios->per_dev[i].offset,
ios->per_dev[i].length,
@@ -650,7 +648,7 @@ static int _prepare_one_group(struct obj
int ret = 0;
while (length) {
- struct _objio_per_comp *per_dev = &ios->per_dev[dev];
+ struct _objio_per_comp *per_dev = &ios->per_dev[dev -
first_dev];
unsigned cur_len, page_off = 0;
if (!per_dev->length) {
@@ -670,8 +668,8 @@ static int _prepare_one_group(struct obj
cur_len = stripe_unit;
}
- if (max_comp < dev)
- max_comp = dev;
+ if (max_comp < dev - first_dev)
+ max_comp = dev - first_dev;
} else {
cur_len = stripe_unit;
}
@@ -806,7 +804,7 @@ static int _read_mirrors(struct objio_st
struct _objio_per_comp *per_dev = &ios->per_dev[cur_comp];
unsigned dev = per_dev->dev;
struct pnfs_osd_object_cred *cred =
- &ios->layout->comps[dev];
+ &ios->layout->comps[cur_comp];
struct osd_obj_id obj = {
.partition = cred->oc_object_id.oid_partition_id,
.id = cred->oc_object_id.oid_object_id,
@@ -904,7 +902,7 @@ static int _write_mirrors(struct objio_s
for (; cur_comp < last_comp; ++cur_comp, ++dev) {
struct osd_request *or = NULL;
struct pnfs_osd_object_cred *cred =
- &ios->layout->comps[dev];
+ &ios->layout->comps[cur_comp];
struct osd_obj_id obj = {
.partition = cred->oc_object_id.oid_partition_id,
.id = cred->oc_object_id.oid_object_id,
--- a/fs/nfs/objlayout/pnfs_osd_xdr_cli.c
+++ b/fs/nfs/objlayout/pnfs_osd_xdr_cli.c
@@ -170,6 +170,9 @@ int pnfs_osd_xdr_decode_layout_map(struc
p = _osd_xdr_decode_data_map(p, &layout->olo_map);
layout->olo_comps_index = be32_to_cpup(p++);
layout->olo_num_comps = be32_to_cpup(p++);
+ dprintk("%s: olo_comps_index=%d olo_num_comps=%d\n", __func__,
+ layout->olo_comps_index, layout->olo_num_comps);
+
iter->total_comps = layout->olo_num_comps;
return 0;
}
Patches currently in stable-queue which might be from bharr...@panasas.com are
queue-3.0/pnfs-obj-bug-when-we-are-running-out-of-bio.patch
queue-3.0/pnfs-obj-fix-the-comp_index-0-case.patch
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