From 57975222b6a928dd4a4a8a7b37093cc8ecba5045 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Wed, 17 Jul 2013 14:41:54 +0200 Subject: [PATCH] blockdev: Rename I/O throttling options for QMP In QMP, we want to use dashes instead of underscores in QMP argument names, and use nested options for throttling. The new option names affect the command line as well, but for compatibility drive_init() will convert the old option names before calling into the code that will be shared between -drive and blockdev-add. Signed-off-by: Kevin Wolf Reviewed-by: Eric Blake --- blockdev.c | 52 +++++++++++++++++++++++++++++++++++++++------------- 1 file changed, 39 insertions(+), 13 deletions(-) diff --git a/blockdev.c b/blockdev.c index 8ff8ed325a..5403188005 100644 --- a/blockdev.c +++ b/blockdev.c @@ -312,7 +312,8 @@ static bool do_check_io_limits(BlockIOLimit *io_limits, Error **errp) return true; } -DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type) +static DriveInfo *blockdev_init(QemuOpts *all_opts, + BlockInterfaceType block_default_type) { const char *buf; const char *file = NULL; @@ -485,17 +486,17 @@ DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type) /* disk I/O throttling */ io_limits.bps[BLOCK_IO_LIMIT_TOTAL] = - qemu_opt_get_number(opts, "bps", 0); + qemu_opt_get_number(opts, "throttling.bps-total", 0); io_limits.bps[BLOCK_IO_LIMIT_READ] = - qemu_opt_get_number(opts, "bps_rd", 0); + qemu_opt_get_number(opts, "throttling.bps-read", 0); io_limits.bps[BLOCK_IO_LIMIT_WRITE] = - qemu_opt_get_number(opts, "bps_wr", 0); + qemu_opt_get_number(opts, "throttling.bps-write", 0); io_limits.iops[BLOCK_IO_LIMIT_TOTAL] = - qemu_opt_get_number(opts, "iops", 0); + qemu_opt_get_number(opts, "throttling.iops-total", 0); io_limits.iops[BLOCK_IO_LIMIT_READ] = - qemu_opt_get_number(opts, "iops_rd", 0); + qemu_opt_get_number(opts, "throttling.iops-read", 0); io_limits.iops[BLOCK_IO_LIMIT_WRITE] = - qemu_opt_get_number(opts, "iops_wr", 0); + qemu_opt_get_number(opts, "throttling.iops-write", 0); if (!do_check_io_limits(&io_limits, &error)) { error_report("%s", error_get_pretty(error)); @@ -726,6 +727,31 @@ err: return NULL; } +static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to) +{ + const char *value; + + value = qemu_opt_get(opts, from); + if (value) { + qemu_opt_set(opts, to, value); + qemu_opt_unset(opts, from); + } +} + +DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type) +{ + /* Change legacy command line options into QMP ones */ + qemu_opt_rename(all_opts, "iops", "throttling.iops-total"); + qemu_opt_rename(all_opts, "iops_rd", "throttling.iops-read"); + qemu_opt_rename(all_opts, "iops_wr", "throttling.iops-write"); + + qemu_opt_rename(all_opts, "bps", "throttling.bps-total"); + qemu_opt_rename(all_opts, "bps_rd", "throttling.bps-read"); + qemu_opt_rename(all_opts, "bps_wr", "throttling.bps-write"); + + return blockdev_init(all_opts, block_default_type); +} + void do_commit(Monitor *mon, const QDict *qdict) { const char *device = qdict_get_str(qdict, "device"); @@ -1855,27 +1881,27 @@ QemuOptsList qemu_common_drive_opts = { .type = QEMU_OPT_BOOL, .help = "open drive file as read-only", },{ - .name = "iops", + .name = "throttling.iops-total", .type = QEMU_OPT_NUMBER, .help = "limit total I/O operations per second", },{ - .name = "iops_rd", + .name = "throttling.iops-read", .type = QEMU_OPT_NUMBER, .help = "limit read operations per second", },{ - .name = "iops_wr", + .name = "throttling.iops-write", .type = QEMU_OPT_NUMBER, .help = "limit write operations per second", },{ - .name = "bps", + .name = "throttling.bps-total", .type = QEMU_OPT_NUMBER, .help = "limit total bytes per second", },{ - .name = "bps_rd", + .name = "throttling.bps-read", .type = QEMU_OPT_NUMBER, .help = "limit read bytes per second", },{ - .name = "bps_wr", + .name = "throttling.bps-write", .type = QEMU_OPT_NUMBER, .help = "limit write bytes per second", },{ -- GitLab