On 07/12/2012 06:32 PM, Lee Yarwood wrote:
On 07/12/2012 01:25 PM, Deepak C Shetty wrote:Hello, I am working on a VDSM standalone script that is using PosixFS inteface to mount gluster volume & trying to create a volume (file) inside the storage domain.Snip of the code is below... ============================================================== sizeGiB = 4 tid = vdsOK(s.createVolume(sdUUID, spUUID, imgUUID, sizeGiB, RAW_FORMAT, PREALLOCATED_VOL, LEAF_VOL, volUUID, "glustervol", BLANK_UUID, BLANK_UUID))['uuid'] waitTask(s, tid) ============================================================== But the file size created is not 4G, its 8K as seen below... qemu-img info /rhev/data-center/mnt/kvmfs01-hs22:dpkvol/f0443ec4-3c94-49c9-a239-797562ee4926/images/073b3309-e4cd-4b6c-978e-5744a9afb8b7/c8c4f92e-818d-433a-b013-b0060cd7cc87 image: /rhev/data-center/mnt/kvmfs01-hs22:dpkvol/f0443ec4-3c94-49c9-a239-797562ee4926/images/073b3309-e4cd-4b6c-978e-5744a9afb8b7/c8c4f92e-818d-433a-b013-b0060cd7cc87 file format: raw virtual size: 2.0K (2048 bytes) disk size: 8.0K It should have created a raw file of size 4G, but its not. Wondering if the sizeGiB argument is not in GB but somethign else ?Isn't this argument actually the number of sectors? vdsm/storage/fileVolume.py 119 def create(cls, repoPath, sdUUID, imgUUID, size, volFormat, preallocate, 120 diskType, volUUID, desc, srcImgUUID, srcVolUUID): 121 """ 122 Create a new volume with given size or snapshot 123 'size' - in sectors 124 'volFormat' - volume format COW / RAW 125 'preallocate' - Preallocate / Sparse 126 'diskType' - enum (API.Image.DiskTypes) 127 'srcImgUUID' - source image UUID 128 'srcVolUUID' - source volume UUID 129 """ Lee
Thanks, i realised it after see the 'dd' cmd vdsm invokes to preallocate, 'bs' is not specified, so it defaults to 512 blksize
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