diff options
| author | Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> | 2012-01-04 22:23:34 +0000 |
|---|---|---|
| committer | Luiz Capitulino <lcapitulino@redhat.com> | 2012-01-18 10:23:39 -0200 |
| commit | 939a1cc399adb92640d156097d528b6471c136ae (patch) | |
| tree | e459b5524103a382b7a271ab992c6fad7ac6298b | |
| parent | c1303596a196613f1a765f8a536319577b2bb844 (diff) | |
block: use proper qerrors in qmp_block_resize
Let's report specific errors so that management tools and users can
identify the problem.
Two new qerrors are needed:
* QERR_DEVICE_HAS_NO_MEDIUM for ENOMEDIUM
* QERR_DEVICE_IS_READ_ONLY for EACCES
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
| -rw-r--r-- | blockdev.c | 26 | ||||
| -rw-r--r-- | qapi-schema.json | 7 | ||||
| -rw-r--r-- | qerror.c | 8 | ||||
| -rw-r--r-- | qerror.h | 6 |
4 files changed, 37 insertions, 10 deletions
diff --git a/blockdev.c b/blockdev.c index 5d16137878..1f83c888e7 100644 --- a/blockdev.c +++ b/blockdev.c @@ -848,11 +848,6 @@ int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data) return 0; } -/* - * XXX: replace the QERR_UNDEFINED_ERROR errors with real values once the - * existing QERR_ macro mess is cleaned up. A good example for better - * error reports can be found in the qemu-img resize code. - */ void qmp_block_resize(const char *device, int64_t size, Error **errp) { BlockDriverState *bs; @@ -864,12 +859,27 @@ void qmp_block_resize(const char *device, int64_t size, Error **errp) } if (size < 0) { - error_set(errp, QERR_UNDEFINED_ERROR); + error_set(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); return; } - if (bdrv_truncate(bs, size)) { + switch (bdrv_truncate(bs, size)) { + case 0: + break; + case -ENOMEDIUM: + error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); + break; + case -ENOTSUP: + error_set(errp, QERR_UNSUPPORTED); + break; + case -EACCES: + error_set(errp, QERR_DEVICE_IS_READ_ONLY, device); + break; + case -EBUSY: + error_set(errp, QERR_DEVICE_IN_USE, device); + break; + default: error_set(errp, QERR_UNDEFINED_ERROR); - return; + break; } } diff --git a/qapi-schema.json b/qapi-schema.json index 9b154ccda3..735eb352b5 100644 --- a/qapi-schema.json +++ b/qapi-schema.json @@ -1064,8 +1064,11 @@ # # Returns: nothing on success # If @device is not a valid block device, DeviceNotFound -# -# Notes: This command returns UndefinedError in a number of error conditions. +# If @size is negative, InvalidParameterValue +# If the block device has no medium inserted, DeviceHasNoMedium +# If the block device does not support resize, Unsupported +# If the block device is read-only, DeviceIsReadOnly +# If a long-running operation is using the device, DeviceInUse # # Since: 0.14.0 ## @@ -80,6 +80,10 @@ static const QErrorStringTable qerror_table[] = { .desc = "Migration is disabled when using feature '%(feature)' in device '%(device)'", }, { + .error_fmt = QERR_DEVICE_HAS_NO_MEDIUM, + .desc = "Device '%(device)' has no medium", + }, + { .error_fmt = QERR_DEVICE_INIT_FAILED, .desc = "Device '%(device)' could not be initialized", }, @@ -88,6 +92,10 @@ static const QErrorStringTable qerror_table[] = { .desc = "Device '%(device)' is in use", }, { + .error_fmt = QERR_DEVICE_IS_READ_ONLY, + .desc = "Device '%(device)' is read only", + }, + { .error_fmt = QERR_DEVICE_LOCKED, .desc = "Device '%(device)' is locked", }, @@ -81,12 +81,18 @@ QError *qobject_to_qerror(const QObject *obj); #define QERR_DEVICE_FEATURE_BLOCKS_MIGRATION \ "{ 'class': 'DeviceFeatureBlocksMigration', 'data': { 'device': %s, 'feature': %s } }" +#define QERR_DEVICE_HAS_NO_MEDIUM \ + "{ 'class': 'DeviceHasNoMedium', 'data': { 'device': %s } }" + #define QERR_DEVICE_INIT_FAILED \ "{ 'class': 'DeviceInitFailed', 'data': { 'device': %s } }" #define QERR_DEVICE_IN_USE \ "{ 'class': 'DeviceInUse', 'data': { 'device': %s } }" +#define QERR_DEVICE_IS_READ_ONLY \ + "{ 'class': 'DeviceIsReadOnly', 'data': { 'device': %s } }" + #define QERR_DEVICE_LOCKED \ "{ 'class': 'DeviceLocked', 'data': { 'device': %s } }" |