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Blame SOURCES/kvm-blockdev-Rename-I-O-throttling-options-for-QMP.patch

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From 6407962af839506d7dcd956d48986324264a3587 Mon Sep 17 00:00:00 2001
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From: Kevin Wolf <kwolf@redhat.com>
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Date: Mon, 9 Sep 2013 14:28:19 +0200
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Subject: [PATCH 28/38] blockdev: Rename I/O throttling options for QMP
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RH-Author: Kevin Wolf <kwolf@redhat.com>
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Message-id: <1378736903-18489-29-git-send-email-kwolf@redhat.com>
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Patchwork-id: 54215
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O-Subject: [RHEL-7.0 qemu-kvm PATCH 28/32] blockdev: Rename I/O throttling options for QMP
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Bugzilla: 1005818
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RH-Acked-by: Fam Zheng <famz@redhat.com>
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RH-Acked-by: Max Reitz <mreitz@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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Bugzilla: 1005818
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In QMP, we want to use dashes instead of underscores in QMP argument
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names, and use nested options for throttling.
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The new option names affect the command line as well, but for
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compatibility drive_init() will convert the old option names before
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calling into the code that will be shared between -drive and
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blockdev-add.
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Reviewed-by: Eric Blake <eblake@redhat.com>
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(cherry picked from commit 57975222b6a928dd4a4a8a7b37093cc8ecba5045)
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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---
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 blockdev.c | 52 +++++++++++++++++++++++++++++++++++++++-------------
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 1 file changed, 39 insertions(+), 13 deletions(-)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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 blockdev.c |   52 +++++++++++++++++++++++++++++++++++++++-------------
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 1 files changed, 39 insertions(+), 13 deletions(-)
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diff --git a/blockdev.c b/blockdev.c
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index 1c9ca4d..08b1aaf 100644
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--- a/blockdev.c
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+++ b/blockdev.c
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@@ -312,7 +312,8 @@ static bool do_check_io_limits(BlockIOLimit *io_limits, Error **errp)
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     return true;
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 }
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-DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type)
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+static DriveInfo *blockdev_init(QemuOpts *all_opts,
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+                                BlockInterfaceType block_default_type)
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 {
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     const char *buf;
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     const char *file = NULL;
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@@ -485,17 +486,17 @@ DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type)
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     /* disk I/O throttling */
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     io_limits.bps[BLOCK_IO_LIMIT_TOTAL]  =
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-                           qemu_opt_get_number(opts, "bps", 0);
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+        qemu_opt_get_number(opts, "throttling.bps-total", 0);
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     io_limits.bps[BLOCK_IO_LIMIT_READ]   =
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-                           qemu_opt_get_number(opts, "bps_rd", 0);
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+        qemu_opt_get_number(opts, "throttling.bps-read", 0);
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     io_limits.bps[BLOCK_IO_LIMIT_WRITE]  =
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-                           qemu_opt_get_number(opts, "bps_wr", 0);
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+        qemu_opt_get_number(opts, "throttling.bps-write", 0);
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     io_limits.iops[BLOCK_IO_LIMIT_TOTAL] =
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-                           qemu_opt_get_number(opts, "iops", 0);
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+        qemu_opt_get_number(opts, "throttling.iops-total", 0);
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     io_limits.iops[BLOCK_IO_LIMIT_READ]  =
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-                           qemu_opt_get_number(opts, "iops_rd", 0);
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+        qemu_opt_get_number(opts, "throttling.iops-read", 0);
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     io_limits.iops[BLOCK_IO_LIMIT_WRITE] =
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-                           qemu_opt_get_number(opts, "iops_wr", 0);
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+        qemu_opt_get_number(opts, "throttling.iops-write", 0);
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     if (!do_check_io_limits(&io_limits, &error)) {
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         error_report("%s", error_get_pretty(error));
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@@ -726,6 +727,31 @@ err:
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     return NULL;
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 }
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+static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to)
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+{
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+    const char *value;
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+
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+    value = qemu_opt_get(opts, from);
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+    if (value) {
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+        qemu_opt_set(opts, to, value);
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+        qemu_opt_unset(opts, from);
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+    }
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+}
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+
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+DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type)
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+{
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+    /* Change legacy command line options into QMP ones */
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+    qemu_opt_rename(all_opts, "iops", "throttling.iops-total");
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+    qemu_opt_rename(all_opts, "iops_rd", "throttling.iops-read");
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+    qemu_opt_rename(all_opts, "iops_wr", "throttling.iops-write");
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+
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+    qemu_opt_rename(all_opts, "bps", "throttling.bps-total");
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+    qemu_opt_rename(all_opts, "bps_rd", "throttling.bps-read");
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+    qemu_opt_rename(all_opts, "bps_wr", "throttling.bps-write");
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+
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+    return blockdev_init(all_opts, block_default_type);
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+}
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+
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 void do_commit(Monitor *mon, const QDict *qdict)
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 {
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     const char *device = qdict_get_str(qdict, "device");
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@@ -1679,27 +1705,27 @@ QemuOptsList qemu_common_drive_opts = {
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             .type = QEMU_OPT_BOOL,
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             .help = "open drive file as read-only",
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         },{
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-            .name = "iops",
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+            .name = "throttling.iops-total",
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             .type = QEMU_OPT_NUMBER,
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             .help = "limit total I/O operations per second",
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         },{
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-            .name = "iops_rd",
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+            .name = "throttling.iops-read",
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             .type = QEMU_OPT_NUMBER,
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             .help = "limit read operations per second",
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         },{
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-            .name = "iops_wr",
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+            .name = "throttling.iops-write",
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             .type = QEMU_OPT_NUMBER,
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             .help = "limit write operations per second",
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         },{
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-            .name = "bps",
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+            .name = "throttling.bps-total",
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             .type = QEMU_OPT_NUMBER,
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             .help = "limit total bytes per second",
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         },{
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-            .name = "bps_rd",
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+            .name = "throttling.bps-read",
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             .type = QEMU_OPT_NUMBER,
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             .help = "limit read bytes per second",
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         },{
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-            .name = "bps_wr",
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+            .name = "throttling.bps-write",
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             .type = QEMU_OPT_NUMBER,
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             .help = "limit write bytes per second",
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         },{
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-- 
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1.7.1
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