From 55eff7c7c9dea635415014de0ab460dae7eef13d Mon Sep 17 00:00:00 2001 From: Jeffrey Cody Date: Thu, 15 Jun 2017 15:50:29 +0200 Subject: [PATCH 4/8] block/iscsi: enable filename option and parsing RH-Author: Jeffrey Cody Message-id: Patchwork-id: 75615 O-Subject: [RHEV-7.4 qemu-kvm-rhev PATCH 2/2] block/iscsi: enable filename option and parsing Bugzilla: 1457088 RH-Acked-by: Juan Quintela RH-Acked-by: Stefan Hajnoczi RH-Acked-by: Max Reitz RH-Acked-by: Richard Jones When enabling option parsing and blockdev-add for iscsi, we removed the 'filename' option. Unfortunately, this was a bit optimistic, as previous versions of QEMU allowed the use of the option in backing filenames via json. This means that without parsing this option, we cannot open existing images that used to work fine. See bug: https://bugzilla.redhat.com/show_bug.cgi?id=1457088 Tested-by: Richard W.M. Jones Signed-off-by: Jeff Cody Message-id: 0789ab6c32814ab4b6896707d378804bd4424c65.1497444637.git.jcody@redhat.com Signed-off-by: Jeff Cody (cherry picked from commit 5c3ad1a6a8fa041c57403dbe1fc5927eec0be66b) Signed-off-by: Jeff Cody Signed-off-by: Miroslav Rezanina --- block/iscsi.c | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) diff --git a/block/iscsi.c b/block/iscsi.c index 42fb0b0..2d16861 100644 --- a/block/iscsi.c +++ b/block/iscsi.c @@ -1732,6 +1732,10 @@ static QemuOptsList runtime_opts = { .name = "timeout", .type = QEMU_OPT_NUMBER, }, + { + .name = "filename", + .type = QEMU_OPT_STRING, + }, { /* end of list */ } }, }; @@ -1747,12 +1751,27 @@ static int iscsi_open(BlockDriverState *bs, QDict *options, int flags, char *initiator_name = NULL; QemuOpts *opts; Error *local_err = NULL; - const char *transport_name, *portal, *target; + const char *transport_name, *portal, *target, *filename; #if LIBISCSI_API_VERSION >= (20160603) enum iscsi_transport_type transport; #endif int i, ret = 0, timeout = 0, lun; + /* If we are given a filename, parse the filename, with precedence given to + * filename encoded options */ + filename = qdict_get_try_str(options, "filename"); + if (filename) { + error_report("Warning: 'filename' option specified. " + "This is an unsupported option, and may be deprecated " + "in the future"); + iscsi_parse_filename(filename, options, &local_err); + if (local_err) { + ret = -EINVAL; + error_propagate(errp, local_err); + goto exit; + } + } + opts = qemu_opts_create(&runtime_opts, NULL, 0, &error_abort); qemu_opts_absorb_qdict(opts, options, &local_err); if (local_err) { @@ -1967,6 +1986,7 @@ out: } memset(iscsilun, 0, sizeof(IscsiLun)); } +exit: return ret; } -- 1.8.3.1