|
 |
ae23c9 |
From 0a37ee43ee671c7cbd02110f9e968dbd530d2a4e Mon Sep 17 00:00:00 2001
|
|
|
ae23c9 |
From: Paolo Bonzini <pbonzini@redhat.com>
|
|
|
ae23c9 |
Date: Fri, 6 Jul 2018 17:56:52 +0200
|
|
|
ae23c9 |
Subject: [PATCH 192/268] pr-helper: fix assertion failure on failed multipath
|
|
|
ae23c9 |
PERSISTENT RESERVE IN
|
|
|
ae23c9 |
MIME-Version: 1.0
|
|
|
ae23c9 |
Content-Type: text/plain; charset=UTF-8
|
|
|
ae23c9 |
Content-Transfer-Encoding: 8bit
|
|
|
ae23c9 |
|
|
|
ae23c9 |
RH-Author: Paolo Bonzini <pbonzini@redhat.com>
|
|
|
ae23c9 |
Message-id: <20180706175659.30615-3-pbonzini@redhat.com>
|
|
|
ae23c9 |
Patchwork-id: 81246
|
|
|
ae23c9 |
O-Subject: [RHEL7.6 qemu-kvm-rhev PATCH 2/9] pr-helper: fix assertion failure on failed multipath PERSISTENT RESERVE IN
|
|
|
ae23c9 |
Bugzilla: 1533158
|
|
|
ae23c9 |
RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
|
|
|
ae23c9 |
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
|
|
|
ae23c9 |
RH-Acked-by: Michal Privoznik <mprivozn@redhat.com>
|
|
|
ae23c9 |
|
|
|
ae23c9 |
The response size is expected to be zero if the SCSI status is not
|
|
|
ae23c9 |
"GOOD", but nothing was resetting it.
|
|
|
ae23c9 |
|
|
|
ae23c9 |
This can be reproduced simply by "sg_persist -s /dev/sdb" where /dev/sdb
|
|
|
ae23c9 |
in the guest is a scsi-block device corresponding to a multipath device
|
|
|
ae23c9 |
on the host.
|
|
|
ae23c9 |
|
|
|
ae23c9 |
Before:
|
|
|
ae23c9 |
|
|
|
ae23c9 |
PR in (Read full status): Aborted command
|
|
|
ae23c9 |
|
|
|
ae23c9 |
and on the host:
|
|
|
ae23c9 |
|
|
|
ae23c9 |
prh_write_response: Assertion `resp->sz == 0' failed.
|
|
|
ae23c9 |
|
|
|
ae23c9 |
After:
|
|
|
ae23c9 |
|
|
|
ae23c9 |
PR in (Read full status): bad field in cdb or parameter list
|
|
|
ae23c9 |
(perhaps unsupported service action)
|
|
|
ae23c9 |
|
|
|
ae23c9 |
Reported-by: Jiri Belka <jbelka@redhat.com>
|
|
|
ae23c9 |
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
|
|
|
ae23c9 |
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
|
|
|
ae23c9 |
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
|
|
|
ae23c9 |
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
|
|
|
ae23c9 |
(cherry picked from commit 86933b4e7879e427e03365bf352c0964640cb37b)
|
|
|
ae23c9 |
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
|
|
|
ae23c9 |
---
|
|
|
ae23c9 |
scsi/qemu-pr-helper.c | 6 +++++-
|
|
|
ae23c9 |
1 file changed, 5 insertions(+), 1 deletion(-)
|
|
|
ae23c9 |
|
|
|
ae23c9 |
diff --git a/scsi/qemu-pr-helper.c b/scsi/qemu-pr-helper.c
|
|
|
ae23c9 |
index 4057cf3..0218d65 100644
|
|
|
ae23c9 |
--- a/scsi/qemu-pr-helper.c
|
|
|
ae23c9 |
+++ b/scsi/qemu-pr-helper.c
|
|
|
ae23c9 |
@@ -558,7 +558,11 @@ static int do_pr_in(int fd, const uint8_t *cdb, uint8_t *sense,
|
|
|
ae23c9 |
#ifdef CONFIG_MPATH
|
|
|
ae23c9 |
if (is_mpath(fd)) {
|
|
|
ae23c9 |
/* multipath_pr_in fills the whole input buffer. */
|
|
|
ae23c9 |
- return multipath_pr_in(fd, cdb, sense, data, *resp_sz);
|
|
|
ae23c9 |
+ int r = multipath_pr_in(fd, cdb, sense, data, *resp_sz);
|
|
|
ae23c9 |
+ if (r != GOOD) {
|
|
|
ae23c9 |
+ *resp_sz = 0;
|
|
|
ae23c9 |
+ }
|
|
|
ae23c9 |
+ return r;
|
|
|
ae23c9 |
}
|
|
|
ae23c9 |
#endif
|
|
|
ae23c9 |
|
|
|
ae23c9 |
--
|
|
|
ae23c9 |
1.8.3.1
|
|
|
ae23c9 |
|