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[PULL 31/43] block: consolidate blocksize properties consistency checks
From: |
Kevin Wolf |
Subject: |
[PULL 31/43] block: consolidate blocksize properties consistency checks |
Date: |
Wed, 17 Jun 2020 16:48:57 +0200 |
From: Roman Kagan <rvkagan@yandex-team.ru>
Several block device properties related to blocksize configuration must
be in certain relationship WRT each other: physical block must be no
smaller than logical block; min_io_size, opt_io_size, and
discard_granularity must be a multiple of a logical block.
To ensure these requirements are met, add corresponding consistency
checks to blkconf_blocksizes, adjusting its signature to communicate
possible error to the caller. Also remove the now redundant consistency
checks from the specific devices.
Signed-off-by: Roman Kagan <rvkagan@yandex-team.ru>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Paul Durrant <paul@xen.org>
Message-Id: <20200528225516.1676602-3-rvkagan@yandex-team.ru>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
include/hw/block/block.h | 2 +-
hw/block/block.c | 30 +++++++++++++++++++++++++++++-
hw/block/fdc.c | 5 ++++-
hw/block/nvme.c | 4 +++-
hw/block/swim.c | 5 ++++-
hw/block/virtio-blk.c | 7 +------
hw/block/xen-block.c | 6 +-----
hw/ide/qdev.c | 5 ++++-
hw/scsi/scsi-disk.c | 12 +++++-------
hw/usb/dev-storage.c | 5 ++++-
tests/qemu-iotests/172.out | 2 +-
11 files changed, 57 insertions(+), 26 deletions(-)
diff --git a/include/hw/block/block.h b/include/hw/block/block.h
index d7246f3862..784953a237 100644
--- a/include/hw/block/block.h
+++ b/include/hw/block/block.h
@@ -87,7 +87,7 @@ bool blk_check_size_and_read_all(BlockBackend *blk, void
*buf, hwaddr size,
bool blkconf_geometry(BlockConf *conf, int *trans,
unsigned cyls_max, unsigned heads_max, unsigned secs_max,
Error **errp);
-void blkconf_blocksizes(BlockConf *conf);
+bool blkconf_blocksizes(BlockConf *conf, Error **errp);
bool blkconf_apply_backend_options(BlockConf *conf, bool readonly,
bool resizable, Error **errp);
diff --git a/hw/block/block.c b/hw/block/block.c
index bf56c7612b..b22207c921 100644
--- a/hw/block/block.c
+++ b/hw/block/block.c
@@ -61,7 +61,7 @@ bool blk_check_size_and_read_all(BlockBackend *blk, void
*buf, hwaddr size,
return true;
}
-void blkconf_blocksizes(BlockConf *conf)
+bool blkconf_blocksizes(BlockConf *conf, Error **errp)
{
BlockBackend *blk = conf->blk;
BlockSizes blocksizes;
@@ -83,6 +83,34 @@ void blkconf_blocksizes(BlockConf *conf)
conf->logical_block_size = BDRV_SECTOR_SIZE;
}
}
+
+ if (conf->logical_block_size > conf->physical_block_size) {
+ error_setg(errp,
+ "logical_block_size > physical_block_size not supported");
+ return false;
+ }
+
+ if (!QEMU_IS_ALIGNED(conf->min_io_size, conf->logical_block_size)) {
+ error_setg(errp,
+ "min_io_size must be a multiple of logical_block_size");
+ return false;
+ }
+
+ if (!QEMU_IS_ALIGNED(conf->opt_io_size, conf->logical_block_size)) {
+ error_setg(errp,
+ "opt_io_size must be a multiple of logical_block_size");
+ return false;
+ }
+
+ if (conf->discard_granularity != -1 &&
+ !QEMU_IS_ALIGNED(conf->discard_granularity,
+ conf->logical_block_size)) {
+ error_setg(errp, "discard_granularity must be "
+ "a multiple of logical_block_size");
+ return false;
+ }
+
+ return true;
}
bool blkconf_apply_backend_options(BlockConf *conf, bool readonly,
diff --git a/hw/block/fdc.c b/hw/block/fdc.c
index 8528b9a3c7..be0674e4aa 100644
--- a/hw/block/fdc.c
+++ b/hw/block/fdc.c
@@ -554,7 +554,10 @@ static void floppy_drive_realize(DeviceState *qdev, Error
**errp)
read_only = !blk_bs(dev->conf.blk) || blk_is_read_only(dev->conf.blk);
}
- blkconf_blocksizes(&dev->conf);
+ if (!blkconf_blocksizes(&dev->conf, errp)) {
+ return;
+ }
+
if (dev->conf.logical_block_size != 512 ||
dev->conf.physical_block_size != 512)
{
diff --git a/hw/block/nvme.c b/hw/block/nvme.c
index 2a2e43f681..1aee042d4c 100644
--- a/hw/block/nvme.c
+++ b/hw/block/nvme.c
@@ -1425,7 +1425,9 @@ static void nvme_init_state(NvmeCtrl *n)
static void nvme_init_blk(NvmeCtrl *n, Error **errp)
{
- blkconf_blocksizes(&n->conf);
+ if (!blkconf_blocksizes(&n->conf, errp)) {
+ return;
+ }
blkconf_apply_backend_options(&n->conf, blk_is_read_only(n->conf.blk),
false, errp);
}
diff --git a/hw/block/swim.c b/hw/block/swim.c
index 8f124782f4..74f56e8f46 100644
--- a/hw/block/swim.c
+++ b/hw/block/swim.c
@@ -189,7 +189,10 @@ static void swim_drive_realize(DeviceState *qdev, Error
**errp)
assert(ret == 0);
}
- blkconf_blocksizes(&dev->conf);
+ if (!blkconf_blocksizes(&dev->conf, errp)) {
+ return;
+ }
+
if (dev->conf.logical_block_size != 512 ||
dev->conf.physical_block_size != 512)
{
diff --git a/hw/block/virtio-blk.c b/hw/block/virtio-blk.c
index 6938a75aa5..413783693c 100644
--- a/hw/block/virtio-blk.c
+++ b/hw/block/virtio-blk.c
@@ -1174,12 +1174,7 @@ static void virtio_blk_device_realize(DeviceState *dev,
Error **errp)
return;
}
- blkconf_blocksizes(&conf->conf);
-
- if (conf->conf.logical_block_size >
- conf->conf.physical_block_size) {
- error_setg(errp,
- "logical_block_size > physical_block_size not supported");
+ if (!blkconf_blocksizes(&conf->conf, errp)) {
return;
}
diff --git a/hw/block/xen-block.c b/hw/block/xen-block.c
index 2827c90ac7..1b7bc5de08 100644
--- a/hw/block/xen-block.c
+++ b/hw/block/xen-block.c
@@ -239,11 +239,7 @@ static void xen_block_realize(XenDevice *xendev, Error
**errp)
return;
}
- blkconf_blocksizes(conf);
-
- if (conf->logical_block_size > conf->physical_block_size) {
- error_setg(
- errp, "logical_block_size > physical_block_size not supported");
+ if (!blkconf_blocksizes(conf, errp)) {
return;
}
diff --git a/hw/ide/qdev.c b/hw/ide/qdev.c
index caa88526f5..3ccb5e2529 100644
--- a/hw/ide/qdev.c
+++ b/hw/ide/qdev.c
@@ -187,7 +187,10 @@ static void ide_dev_initfn(IDEDevice *dev, IDEDriveKind
kind, Error **errp)
return;
}
- blkconf_blocksizes(&dev->conf);
+ if (!blkconf_blocksizes(&dev->conf, errp)) {
+ return;
+ }
+
if (dev->conf.logical_block_size != 512) {
error_setg(errp, "logical_block_size must be 512 for IDE");
return;
diff --git a/hw/scsi/scsi-disk.c b/hw/scsi/scsi-disk.c
index 387503e11b..8ce68a9dd6 100644
--- a/hw/scsi/scsi-disk.c
+++ b/hw/scsi/scsi-disk.c
@@ -2346,12 +2346,7 @@ static void scsi_realize(SCSIDevice *dev, Error **errp)
return;
}
- blkconf_blocksizes(&s->qdev.conf);
-
- if (s->qdev.conf.logical_block_size >
- s->qdev.conf.physical_block_size) {
- error_setg(errp,
- "logical_block_size > physical_block_size not supported");
+ if (!blkconf_blocksizes(&s->qdev.conf, errp)) {
return;
}
@@ -2436,7 +2431,9 @@ static void scsi_hd_realize(SCSIDevice *dev, Error **errp)
if (s->qdev.conf.blk) {
ctx = blk_get_aio_context(s->qdev.conf.blk);
aio_context_acquire(ctx);
- blkconf_blocksizes(&s->qdev.conf);
+ if (!blkconf_blocksizes(&s->qdev.conf, errp)) {
+ goto out;
+ }
}
s->qdev.blocksize = s->qdev.conf.logical_block_size;
s->qdev.type = TYPE_DISK;
@@ -2444,6 +2441,7 @@ static void scsi_hd_realize(SCSIDevice *dev, Error **errp)
s->product = g_strdup("QEMU HARDDISK");
}
scsi_realize(&s->qdev, errp);
+out:
if (ctx) {
aio_context_release(ctx);
}
diff --git a/hw/usb/dev-storage.c b/hw/usb/dev-storage.c
index a5204b6f2a..f5977eb72e 100644
--- a/hw/usb/dev-storage.c
+++ b/hw/usb/dev-storage.c
@@ -612,7 +612,10 @@ static void usb_msd_storage_realize(USBDevice *dev, Error
**errp)
return;
}
- blkconf_blocksizes(&s->conf);
+ if (!blkconf_blocksizes(&s->conf, errp)) {
+ return;
+ }
+
if (!blkconf_apply_backend_options(&s->conf, blk_is_read_only(blk), true,
errp)) {
return;
diff --git a/tests/qemu-iotests/172.out b/tests/qemu-iotests/172.out
index 7abbe82427..59cc70aebb 100644
--- a/tests/qemu-iotests/172.out
+++ b/tests/qemu-iotests/172.out
@@ -1204,7 +1204,7 @@ Testing: -drive if=none,file=TEST_DIR/t.qcow2 -device
floppy,drive=none0,physica
drive-type = "144"
Testing: -drive if=none,file=TEST_DIR/t.qcow2 -device
floppy,drive=none0,logical_block_size=4096
-QEMU_PROG: -device floppy,drive=none0,logical_block_size=4096: Physical and
logical block size must be 512 for floppy
+QEMU_PROG: -device floppy,drive=none0,logical_block_size=4096:
logical_block_size > physical_block_size not supported
Testing: -drive if=none,file=TEST_DIR/t.qcow2 -device
floppy,drive=none0,physical_block_size=1024
QEMU_PROG: -device floppy,drive=none0,physical_block_size=1024: Physical and
logical block size must be 512 for floppy
--
2.25.4
- [PULL 19/43] hw/block/nvme: add namespace helpers, (continued)
- [PULL 19/43] hw/block/nvme: add namespace helpers, Kevin Wolf, 2020/06/17
- [PULL 21/43] hw/block/nvme: factor out pci setup, Kevin Wolf, 2020/06/17
- [PULL 24/43] hw/block/nvme: do cmb/pmr init as part of pci init, Kevin Wolf, 2020/06/17
- [PULL 26/43] hw/block/nvme: Verify msix_vector_use() returned value, Kevin Wolf, 2020/06/17
- [PULL 08/43] hw/block/nvme: rename trace events to pci_nvme, Kevin Wolf, 2020/06/17
- [PULL 20/43] hw/block/nvme: factor out namespace setup, Kevin Wolf, 2020/06/17
- [PULL 22/43] hw/block/nvme: factor out cmb setup, Kevin Wolf, 2020/06/17
- [PULL 23/43] hw/block/nvme: factor out pmr setup, Kevin Wolf, 2020/06/17
- [PULL 25/43] hw/block/nvme: factor out controller identify setup, Kevin Wolf, 2020/06/17
- [PULL 29/43] .gitignore: Ignore storage-daemon files, Kevin Wolf, 2020/06/17
- [PULL 31/43] block: consolidate blocksize properties consistency checks,
Kevin Wolf <=
- [PULL 32/43] qdev-properties: blocksize: use same limits in code and description, Kevin Wolf, 2020/06/17
- [PULL 27/43] hw/block/nvme: add msix_qsize parameter, Kevin Wolf, 2020/06/17
- [PULL 33/43] qdev-properties: add size32 property type, Kevin Wolf, 2020/06/17
- [PULL 35/43] block: make BlockConf size props 32bit and accept size suffixes, Kevin Wolf, 2020/06/17
- [PULL 28/43] hw/block/nvme: verify msix_init_exclusive_bar() return value, Kevin Wolf, 2020/06/17
- [PULL 30/43] virtio-blk: store opt_io_size with correct size, Kevin Wolf, 2020/06/17
- [PULL 34/43] qdev-properties: make blocksize accept size suffixes, Kevin Wolf, 2020/06/17
- [PULL 37/43] block: lift blocksize property limit to 2 MiB, Kevin Wolf, 2020/06/17
- [PULL 40/43] iotests/292: data_file is unsupported, Kevin Wolf, 2020/06/17
- [PULL 38/43] iotests.py: Add skip_for_formats() decorator, Kevin Wolf, 2020/06/17