diff options
Diffstat (limited to 'block/nvme.c')
| -rw-r--r-- | block/nvme.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/block/nvme.c b/block/nvme.c index a06a188d53..5a6fbacf4a 100644 --- a/block/nvme.c +++ b/block/nvme.c @@ -1389,6 +1389,29 @@ out: } +static int coroutine_fn nvme_co_truncate(BlockDriverState *bs, int64_t offset, + bool exact, PreallocMode prealloc, + BdrvRequestFlags flags, Error **errp) +{ + int64_t cur_length; + + if (prealloc != PREALLOC_MODE_OFF) { + error_setg(errp, "Unsupported preallocation mode '%s'", + PreallocMode_str(prealloc)); + return -ENOTSUP; + } + + cur_length = nvme_getlength(bs); + if (offset != cur_length && exact) { + error_setg(errp, "Cannot resize NVMe devices"); + return -ENOTSUP; + } else if (offset > cur_length) { + error_setg(errp, "Cannot grow NVMe devices"); + return -EINVAL; + } + + return 0; +} static int nvme_reopen_prepare(BDRVReopenState *reopen_state, BlockReopenQueue *queue, Error **errp) @@ -1523,6 +1546,7 @@ static BlockDriver bdrv_nvme = { .bdrv_close = nvme_close, .bdrv_getlength = nvme_getlength, .bdrv_probe_blocksizes = nvme_probe_blocksizes, + .bdrv_co_truncate = nvme_co_truncate, .bdrv_co_preadv = nvme_co_preadv, .bdrv_co_pwritev = nvme_co_pwritev, |