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,
120diskType, 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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