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glusterfs/0107-feature-bitrot-remove-internal-xattrs-from-lookup-cb.patch
Milind Changire cf62f1947f autobuild v3.12.2-2 
Resolves: bz#1264911 bz#1277924 bz#1286820 bz#1360331 bz#1401969
Resolves: bz#1410719 bz#1419438 bz#1426042 bz#1444820 bz#1459101
Resolves: bz#1464150 bz#1464350 bz#1466122 bz#1466129 bz#1467903
Resolves: bz#1468972 bz#1476876 bz#1484446 bz#1492591 bz#1498391
Resolves: bz#1498730 bz#1499865 bz#1500704 bz#1501345 bz#1505570
Resolves: bz#1507361 bz#1507394 bz#1509102 bz#1509191 bz#1509810
Resolves: bz#1509833 bz#1511766 bz#1512470 bz#1512496 bz#1512963
Resolves: bz#1515051 bz#1519076 bz#1519740 bz#1534253 bz#1534530
Signed-off-by: Milind Changire <mchangir@redhat.com>
2018-01-17 02:21:37 -05:00

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From d2d4750a70b30174a52f63a39b174f48ce0879e9 Mon Sep 17 00:00:00 2001
From: Ravishankar N <ravishankar@redhat.com>
Date: Mon, 11 Dec 2017 16:14:03 +0530
Subject: [PATCH 107/128] feature/bitrot: remove internal xattrs from lookup
cbk
Backport of https://review.gluster.org/#/c/19021/
Problem:
afr requests all xattrs in lookup via the list-xattr key. If bitrot is
enabled and later disabled, or if the bitrot xattrs were present due to
an older version of bitrot which used to create the xattrs without
enabling the feature, the xattrs (trusted.bit-rot.version in particular)
was not getting filtered and ended up reaching the client stack. AFR, on
noticing different values of the xattr across bricks of the replica,
started triggering spurious metadata heals.
Fix:
Filter all internal xattrs in bitrot xlator before unwinding lookup,
(f)getxattr.
Thanks to Kotresh for the help in RCA'ing.
Change-Id: I5bc70e4b901359c3daefc67b8e4fa6ddb47f046c
BUG: 1519740
Signed-off-by: Ravishankar N <ravishankar@redhat.com>
Reviewed-on: https://code.engineering.redhat.com/gerrit/126154
Tested-by: RHGS Build Bot <nigelb@redhat.com>
Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
---
xlators/features/bit-rot/src/stub/bit-rot-stub.c | 23 ++++++++++++++++-------
xlators/features/bit-rot/src/stub/bit-rot-stub.h | 5 +++++
2 files changed, 21 insertions(+), 7 deletions(-)
diff --git a/xlators/features/bit-rot/src/stub/bit-rot-stub.c b/xlators/features/bit-rot/src/stub/bit-rot-stub.c
index fb187a3..4be7caa 100644
--- a/xlators/features/bit-rot/src/stub/bit-rot-stub.c
+++ b/xlators/features/bit-rot/src/stub/bit-rot-stub.c
@@ -1585,6 +1585,7 @@ br_stub_getxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int32_t ret = 0;
size_t totallen = 0;
size_t signaturelen = 0;
+ br_stub_private_t *priv = NULL;
br_version_t *obuf = NULL;
br_signature_t *sbuf = NULL;
br_isignature_out_t *sign = NULL;
@@ -1592,9 +1593,15 @@ br_stub_getxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
br_stub_local_t *local = NULL;
inode_t *inode = NULL;
gf_boolean_t bad_object = _gf_false;
+ gf_boolean_t ver_enabled = _gf_false;
+
+ BR_STUB_VER_ENABLED_IN_CALLPATH(frame, ver_enabled);
+ priv = this->private;
if (op_ret < 0)
goto unwind;
+ BR_STUB_VER_COND_GOTO (priv, (!ver_enabled), delkeys);
+
if (cookie != (void *) BR_STUB_REQUEST_COOKIE)
goto unwind;
@@ -1740,8 +1747,7 @@ br_stub_getxattr (call_frame_t *frame, xlator_t *this,
goto unwind;
priv = this->private;
- if (!priv->do_versioning)
- goto wind;
+ BR_STUB_VER_NOT_ACTIVE_THEN_GOTO (frame, priv, wind);
/**
* If xattr is node-uuid and the inode is marked bad, return EIO.
@@ -1762,6 +1768,7 @@ br_stub_getxattr (call_frame_t *frame, xlator_t *this,
strlen (GLUSTERFS_GET_BR_STUB_INIT_TIME)) == 0)
&& ((gf_uuid_compare (loc->gfid, rootgfid) == 0)
|| (gf_uuid_compare (loc->inode->gfid, rootgfid) == 0))) {
+ BR_STUB_RESET_LOCAL_NULL (frame);
br_stub_send_stub_init_time (frame, this);
return 0;
}
@@ -1792,6 +1799,7 @@ br_stub_getxattr (call_frame_t *frame, xlator_t *this,
FIRST_CHILD (this)->fops->getxattr, loc, name, xdata);
return 0;
unwind:
+ BR_STUB_RESET_LOCAL_NULL (frame);
STACK_UNWIND_STRICT (getxattr, frame, op_ret, op_errno, NULL, NULL);
return 0;
}
@@ -1809,6 +1817,7 @@ br_stub_fgetxattr (call_frame_t *frame, xlator_t *this,
br_stub_private_t *priv = NULL;
rootgfid[15] = 1;
+ priv = this->private;
if (!name) {
cbk = br_stub_listxattr_cbk;
@@ -1818,9 +1827,7 @@ br_stub_fgetxattr (call_frame_t *frame, xlator_t *this,
if (br_stub_is_internal_xattr (name))
goto unwind;
- priv = this->private;
- if (!priv->do_versioning)
- goto wind;
+ BR_STUB_VER_NOT_ACTIVE_THEN_GOTO (frame, priv, wind);
/**
* If xattr is node-uuid and the inode is marked bad, return EIO.
@@ -1840,6 +1847,7 @@ br_stub_fgetxattr (call_frame_t *frame, xlator_t *this,
&& (strncmp (name, GLUSTERFS_GET_BR_STUB_INIT_TIME,
strlen (GLUSTERFS_GET_BR_STUB_INIT_TIME)) == 0)
&& (gf_uuid_compare (fd->inode->gfid, rootgfid) == 0)) {
+ BR_STUB_RESET_LOCAL_NULL (frame);
br_stub_send_stub_init_time (frame, this);
return 0;
}
@@ -1870,6 +1878,7 @@ br_stub_fgetxattr (call_frame_t *frame, xlator_t *this,
FIRST_CHILD (this)->fops->fgetxattr, fd, name, xdata);
return 0;
unwind:
+ BR_STUB_RESET_LOCAL_NULL (frame);
STACK_UNWIND_STRICT (fgetxattr, frame, op_ret, op_errno, NULL, NULL);
return 0;
}
@@ -2867,13 +2876,14 @@ br_stub_lookup_cbk (call_frame_t *frame, void *cookie,
BR_STUB_VER_ENABLED_IN_CALLPATH(frame, ver_enabled);
priv = this->private;
- BR_STUB_VER_COND_GOTO (priv, (!ver_enabled), unwind);
if (op_ret < 0) {
(void) br_stub_handle_lookup_error (this, inode, op_errno);
goto unwind;
}
+ BR_STUB_VER_COND_GOTO (priv, (!ver_enabled), delkey);
+
if (!IA_ISREG (stbuf->ia_type))
goto unwind;
@@ -2892,7 +2902,6 @@ br_stub_lookup_cbk (call_frame_t *frame, void *cookie,
op_errno = EIO;
goto unwind;
}
-
goto delkey;
}
diff --git a/xlators/features/bit-rot/src/stub/bit-rot-stub.h b/xlators/features/bit-rot/src/stub/bit-rot-stub.h
index 433fa68..8f1b185 100644
--- a/xlators/features/bit-rot/src/stub/bit-rot-stub.h
+++ b/xlators/features/bit-rot/src/stub/bit-rot-stub.h
@@ -54,6 +54,11 @@
frame->local = NULL; \
} while (0)
+#define BR_STUB_RESET_LOCAL_NULL(frame) do { \
+ if (frame->local == (void *)0x1) \
+ frame->local = NULL; \
+ } while (0)
+
typedef int (br_stub_version_cbk) (call_frame_t *, void *,
xlator_t *, int32_t, int32_t, dict_t *);
--
1.8.3.1
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