Currently at startup if using cache=none on a filesystem lacking O_DIRECT such as tmpfs, at startup QEMU prints
qemu-system-x86_64: -drive file=/tmp/foo.img,cache=none: file system may not support O_DIRECT qemu-system-x86_64: -drive file=/tmp/foo.img,cache=none: Could not open '/tmp/foo.img': Invalid argument while at QMP level the hint is missing, so QEMU reports just "error": { "class": "GenericError", "desc": "Could not open '/tmp/foo.img': Invalid argument" } which is close to useless for the end user trying to figure out what they did wrong With this change at startup QEMU prints qemu-system-x86_64: -drive file=/tmp/foo.img,cache=none: Unable to open '/tmp/foo.img' flags 0x4000: filesystem does not support O_DIRECT while at the QMP level QEMU reports a massively more informative "error": { "class": "GenericError", "desc": "Unable to open '/tmp/foo.img' flags 0x4002: filesystem does not support O_DIRECT" } Signed-off-by: Daniel P. Berrangé <berra...@redhat.com> --- block/file-posix.c | 10 ++++------ tests/qemu-iotests/051.out | 4 ++-- tests/qemu-iotests/051.pc.out | 4 ++-- tests/qemu-iotests/061.out | 2 +- tests/qemu-iotests/069.out | 2 +- tests/qemu-iotests/082.out | 4 ++-- tests/qemu-iotests/111.out | 2 +- tests/qemu-iotests/226.out | 6 +++--- tests/qemu-iotests/232.out | 12 ++++++------ tests/qemu-iotests/244.out | 6 +++--- 10 files changed, 25 insertions(+), 27 deletions(-) diff --git a/block/file-posix.c b/block/file-posix.c index 3ab8f5a0fa..2865b789fb 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -574,11 +574,10 @@ static int raw_open_common(BlockDriverState *bs, QDict *options, raw_parse_flags(bdrv_flags, &s->open_flags, false); s->fd = -1; - fd = qemu_open(filename, s->open_flags, 0644); + fd = qemu_open_err(filename, s->open_flags, errp, 0644); ret = fd < 0 ? -errno : 0; if (ret < 0) { - error_setg_file_open(errp, -ret, filename); if (ret == -EROFS) { ret = -EACCES; } @@ -970,9 +969,8 @@ static int raw_reconfigure_getfd(BlockDriverState *bs, int flags, ret = raw_normalize_devicepath(&normalized_filename, errp); if (ret >= 0) { assert(!(*open_flags & O_CREAT)); - fd = qemu_open(normalized_filename, *open_flags); + fd = qemu_open_err(normalized_filename, *open_flags, errp); if (fd == -1) { - error_setg_errno(errp, errno, "Could not reopen file"); return -1; } } @@ -2324,10 +2322,10 @@ raw_co_create(BlockdevCreateOptions *options, Error **errp) } /* Create file */ - fd = qemu_open(file_opts->filename, O_RDWR | O_CREAT | O_BINARY, 0644); + fd = qemu_open_err(file_opts->filename, O_RDWR | O_CREAT | O_BINARY, + errp, 0644); if (fd < 0) { result = -errno; - error_setg_errno(errp, -result, "Could not create file"); goto out; } diff --git a/tests/qemu-iotests/051.out b/tests/qemu-iotests/051.out index 554c5ca90a..1a80eac0ce 100644 --- a/tests/qemu-iotests/051.out +++ b/tests/qemu-iotests/051.out @@ -363,7 +363,7 @@ Testing: -drive file=foo:bar QEMU_PROG: -drive file=foo:bar: Unknown protocol 'foo' Testing: -drive file.filename=foo:bar -QEMU_PROG: -drive file.filename=foo:bar: Could not open 'foo:bar': No such file or directory +QEMU_PROG: -drive file.filename=foo:bar: Could not open 'foo:bar' flags 0x08000: No such file or directory Testing: -hda file:TEST_DIR/t.qcow2 QEMU X.Y.Z monitor - type 'help' for more information @@ -374,7 +374,7 @@ QEMU X.Y.Z monitor - type 'help' for more information (qemu) quit Testing: -drive file.filename=file:TEST_DIR/t.qcow2 -QEMU_PROG: -drive file.filename=file:TEST_DIR/t.qcow2: Could not open 'file:TEST_DIR/t.qcow2': No such file or directory +QEMU_PROG: -drive file.filename=file:TEST_DIR/t.qcow2: Could not open 'file:TEST_DIR/t.qcow2' flags 0x80000: No such file or directory === Snapshot mode === diff --git a/tests/qemu-iotests/051.pc.out b/tests/qemu-iotests/051.pc.out index 0ea80d35f0..bf8f96287b 100644 --- a/tests/qemu-iotests/051.pc.out +++ b/tests/qemu-iotests/051.pc.out @@ -463,7 +463,7 @@ Testing: -drive file=foo:bar QEMU_PROG: -drive file=foo:bar: Unknown protocol 'foo' Testing: -drive file.filename=foo:bar -QEMU_PROG: -drive file.filename=foo:bar: Could not open 'foo:bar': No such file or directory +QEMU_PROG: -drive file.filename=foo:bar: Could not open 'foo:bar' flags 0x80000: No such file or directory Testing: -hda file:TEST_DIR/t.qcow2 QEMU X.Y.Z monitor - type 'help' for more information @@ -474,7 +474,7 @@ QEMU X.Y.Z monitor - type 'help' for more information (qemu) quit Testing: -drive file.filename=file:TEST_DIR/t.qcow2 -QEMU_PROG: -drive file.filename=file:TEST_DIR/t.qcow2: Could not open 'file:TEST_DIR/t.qcow2': No such file or directory +QEMU_PROG: -drive file.filename=file:TEST_DIR/t.qcow2: Could not open 'file:TEST_DIR/t.qcow2' flags 0x80000: No such file or directory === Snapshot mode === diff --git a/tests/qemu-iotests/061.out b/tests/qemu-iotests/061.out index 2f03cf045c..b4bc1f3112 100644 --- a/tests/qemu-iotests/061.out +++ b/tests/qemu-iotests/061.out @@ -533,7 +533,7 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 qemu-img: data-file can only be set for images that use an external data file Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 data_file=TEST_DIR/t.IMGFMT.data -qemu-img: Could not open 'TEST_DIR/t.IMGFMT': Could not open 'foo': No such file or directory +qemu-img: Could not open 'TEST_DIR/t.IMGFMT': Could not open 'foo' flags 0x80000: No such file or directory image: TEST_DIR/t.IMGFMT file format: IMGFMT virtual size: 64 MiB (67108864 bytes) diff --git a/tests/qemu-iotests/069.out b/tests/qemu-iotests/069.out index c78e8c2b72..60da51f7da 100644 --- a/tests/qemu-iotests/069.out +++ b/tests/qemu-iotests/069.out @@ -4,5 +4,5 @@ QA output created by 069 Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=131072 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=131072 backing_file=TEST_DIR/t.IMGFMT.base -qemu-io: can't open device TEST_DIR/t.IMGFMT: Could not open backing file: Could not open 'TEST_DIR/t.IMGFMT.base': No such file or directory +qemu-io: can't open device TEST_DIR/t.IMGFMT: Could not open backing file: Could not open 'TEST_DIR/t.IMGFMT.base' flags 0x80000: No such file or directory *** done diff --git a/tests/qemu-iotests/082.out b/tests/qemu-iotests/082.out index 529a1214e1..7e57235183 100644 --- a/tests/qemu-iotests/082.out +++ b/tests/qemu-iotests/082.out @@ -528,10 +528,10 @@ Supported options: size=<size> - Virtual disk size Testing: convert -O qcow2 -o backing_file=TEST_DIR/t.qcow2,,help TEST_DIR/t.qcow2 TEST_DIR/t.qcow2.base -qemu-img: Could not open 'TEST_DIR/t.qcow2.base': Could not open backing file: Could not open 'TEST_DIR/t.qcow2,help': No such file or directory +qemu-img: Could not open 'TEST_DIR/t.qcow2.base': Could not open backing file: Could not open 'TEST_DIR/t.qcow2,help' flags 0x80000: No such file or directory Testing: convert -O qcow2 -o backing_file=TEST_DIR/t.qcow2,,? TEST_DIR/t.qcow2 TEST_DIR/t.qcow2.base -qemu-img: Could not open 'TEST_DIR/t.qcow2.base': Could not open backing file: Could not open 'TEST_DIR/t.qcow2,?': No such file or directory +qemu-img: Could not open 'TEST_DIR/t.qcow2.base': Could not open backing file: Could not open 'TEST_DIR/t.qcow2,?' flags 0x80000: No such file or directory Testing: convert -O qcow2 -o backing_file=TEST_DIR/t.qcow2, -o help TEST_DIR/t.qcow2 TEST_DIR/t.qcow2.base qemu-img: Invalid option list: backing_file=TEST_DIR/t.qcow2, diff --git a/tests/qemu-iotests/111.out b/tests/qemu-iotests/111.out index 5279c462fc..f25f6bf573 100644 --- a/tests/qemu-iotests/111.out +++ b/tests/qemu-iotests/111.out @@ -1,4 +1,4 @@ QA output created by 111 -qemu-img: TEST_DIR/t.IMGFMT: Could not open 'TEST_DIR/t.IMGFMT.inexistent': No such file or directory +qemu-img: TEST_DIR/t.IMGFMT: Could not open 'TEST_DIR/t.IMGFMT.inexistent' flags 0x80000: No such file or directory Could not open backing image to determine size. *** done diff --git a/tests/qemu-iotests/226.out b/tests/qemu-iotests/226.out index 42be973ff2..353fc4c799 100644 --- a/tests/qemu-iotests/226.out +++ b/tests/qemu-iotests/226.out @@ -6,7 +6,7 @@ QA output created by 226 qemu-io: can't open: A regular file was expected by the 'file' driver, but something else was given qemu-io: warning: Opening a character device as a file using the 'file' driver is deprecated == Testing RW == -qemu-io: can't open: Could not open 'TEST_DIR/t.IMGFMT': Is a directory +qemu-io: can't open: Could not open 'TEST_DIR/t.IMGFMT' flags 0x80002: Is a directory qemu-io: warning: Opening a character device as a file using the 'file' driver is deprecated === Testing with driver:host_device === @@ -14,13 +14,13 @@ qemu-io: warning: Opening a character device as a file using the 'file' driver i == Testing RO == qemu-io: can't open: 'host_device' driver expects either a character or block device == Testing RW == -qemu-io: can't open: Could not open 'TEST_DIR/t.IMGFMT': Is a directory +qemu-io: can't open: Could not open 'TEST_DIR/t.IMGFMT' flags 0x80002: Is a directory === Testing with driver:host_cdrom === == Testing RO == qemu-io: can't open: 'host_cdrom' driver expects either a character or block device == Testing RW == -qemu-io: can't open: Could not open 'TEST_DIR/t.IMGFMT': Is a directory +qemu-io: can't open: Could not open 'TEST_DIR/t.IMGFMT' flags 0x80802: Is a directory *** done diff --git a/tests/qemu-iotests/232.out b/tests/qemu-iotests/232.out index 3bd1a920af..bfa3f20172 100644 --- a/tests/qemu-iotests/232.out +++ b/tests/qemu-iotests/232.out @@ -21,11 +21,11 @@ NODE_NAME: TEST_DIR/t.IMGFMT (file, read-only) NODE_NAME: TEST_DIR/t.IMGFMT (file, read-only) NODE_NAME: TEST_DIR/t.IMGFMT (file, read-only) -QEMU_PROG: -drive driver=file,file=TEST_DIR/t.IMGFMT,if=none,read-only=off,auto-read-only=off: Could not open 'TEST_DIR/t.IMGFMT': Permission denied +QEMU_PROG: -drive driver=file,file=TEST_DIR/t.IMGFMT,if=none,read-only=off,auto-read-only=off: Could not open 'TEST_DIR/t.IMGFMT' flags 0x80002: Permission denied NODE_NAME: TEST_DIR/t.IMGFMT (file) NODE_NAME: TEST_DIR/t.IMGFMT (file) -QEMU_PROG: -drive driver=file,file=TEST_DIR/t.IMGFMT,if=none,auto-read-only=off: Could not open 'TEST_DIR/t.IMGFMT': Permission denied +QEMU_PROG: -drive driver=file,file=TEST_DIR/t.IMGFMT,if=none,auto-read-only=off: Could not open 'TEST_DIR/t.IMGFMT' flags 0x80002: Permission denied NODE_NAME: TEST_DIR/t.IMGFMT (file) NODE_NAME: TEST_DIR/t.IMGFMT (file) @@ -49,11 +49,11 @@ node0: TEST_DIR/t.IMGFMT (file, read-only) node0: TEST_DIR/t.IMGFMT (file, read-only) node0: TEST_DIR/t.IMGFMT (file, read-only) -QEMU_PROG: -blockdev driver=file,filename=TEST_DIR/t.IMGFMT,node-name=node0,read-only=off,auto-read-only=off: Could not open 'TEST_DIR/t.IMGFMT': Permission denied +QEMU_PROG: -blockdev driver=file,filename=TEST_DIR/t.IMGFMT,node-name=node0,read-only=off,auto-read-only=off: Could not open 'TEST_DIR/t.IMGFMT' flags 0x80002: Permission denied node0: TEST_DIR/t.IMGFMT (file) -QEMU_PROG: -blockdev driver=file,filename=TEST_DIR/t.IMGFMT,node-name=node0,read-only=off: Could not open 'TEST_DIR/t.IMGFMT': Permission denied +QEMU_PROG: -blockdev driver=file,filename=TEST_DIR/t.IMGFMT,node-name=node0,read-only=off: Could not open 'TEST_DIR/t.IMGFMT' flags 0x80002: Permission denied -QEMU_PROG: -blockdev driver=file,filename=TEST_DIR/t.IMGFMT,node-name=node0,auto-read-only=off: Could not open 'TEST_DIR/t.IMGFMT': Permission denied +QEMU_PROG: -blockdev driver=file,filename=TEST_DIR/t.IMGFMT,node-name=node0,auto-read-only=off: Could not open 'TEST_DIR/t.IMGFMT' flags 0x80002: Permission denied node0: TEST_DIR/t.IMGFMT (file) -QEMU_PROG: -blockdev driver=file,filename=TEST_DIR/t.IMGFMT,node-name=node0: Could not open 'TEST_DIR/t.IMGFMT': Permission denied +QEMU_PROG: -blockdev driver=file,filename=TEST_DIR/t.IMGFMT,node-name=node0: Could not open 'TEST_DIR/t.IMGFMT' flags 0x80002: Permission denied *** done diff --git a/tests/qemu-iotests/244.out b/tests/qemu-iotests/244.out index dbab7359a9..34daec97f2 100644 --- a/tests/qemu-iotests/244.out +++ b/tests/qemu-iotests/244.out @@ -9,7 +9,7 @@ read 65536/65536 bytes at offset 0 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 65536/65536 bytes at offset 0 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -qemu-io: can't open device TEST_DIR/t.qcow2: Could not open 'inexistent': No such file or directory +qemu-io: can't open device TEST_DIR/t.qcow2: Could not open 'inexistent' flags 0x80002: No such file or directory no file open, try 'help open' Data file required, but without data file name in the image: @@ -17,14 +17,14 @@ qemu-io: can't open device TEST_DIR/t.qcow2: 'data-file' is required for this im no file open, try 'help open' read 65536/65536 bytes at offset 0 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -qemu-io: can't open device TEST_DIR/t.qcow2: Could not open 'inexistent': No such file or directory +qemu-io: can't open device TEST_DIR/t.qcow2: Could not open 'inexistent' flags 0x80002: No such file or directory no file open, try 'help open' Setting data-file for an image with internal data: Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 qemu-io: can't open device TEST_DIR/t.qcow2: 'data-file' can only be set for images with an external data file no file open, try 'help open' -qemu-io: can't open device TEST_DIR/t.qcow2: Could not open 'inexistent': No such file or directory +qemu-io: can't open device TEST_DIR/t.qcow2: Could not open 'inexistent' flags 0x80002: No such file or directory no file open, try 'help open' === Conflicting features === -- 2.26.2