Revision 326e0925
| b/lib/backend.py | ||
|---|---|---|
| 2235 | 2235 |
return device.unique_id |
| 2236 | 2236 |
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| 2237 | 2237 |
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def _DumpDevice(source_path, target_path, offset, size): |
|
| 2238 |
def _DumpDevice(source_path, target_path, offset, size, truncate):
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|
| 2239 | 2239 |
"""This function images/wipes the device using a local file. |
| 2240 | 2240 |
|
| 2241 | 2241 |
@type source_path: string |
| ... | ... | |
| 2250 | 2250 |
@type size: int |
| 2251 | 2251 |
@param size: maximum size in MiB to write (data source might be smaller) |
| 2252 | 2252 |
|
| 2253 |
@type truncate: bool |
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@param truncate: whether the file should be truncated |
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@return: None |
| 2254 | 2257 |
@raise RPCFail: in case of failure |
| 2255 | 2258 |
|
| ... | ... | |
| 2262 | 2265 |
cmd = [constants.DD_CMD, "if=%s" % source_path, "seek=%d" % offset, |
| 2263 | 2266 |
"bs=%s" % block_size, "oflag=direct", "of=%s" % target_path, |
| 2264 | 2267 |
"count=%d" % size] |
| 2268 |
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if not truncate: |
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cmd.append("conv=notrunc")
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| 2265 | 2272 |
result = utils.RunCmd(cmd) |
| 2266 | 2273 |
|
| 2267 | 2274 |
if result.failed: |
| ... | ... | |
| 2348 | 2355 |
if (offset + size) > rdev.size: |
| 2349 | 2356 |
_Fail("Wipe offset and size are bigger than device size")
|
| 2350 | 2357 |
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_DumpDevice("/dev/zero", rdev.dev_path, offset, size)
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_DumpDevice("/dev/zero", rdev.dev_path, offset, size, True)
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| 2352 | 2359 |
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| 2353 | 2360 |
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| 2354 | 2361 |
def BlockdevImage(disk, image, size): |
| ... | ... | |
| 2387 | 2394 |
if utils.IsUrl(image): |
| 2388 | 2395 |
_DownloadAndDumpDevice(image, rdev.dev_path, size) |
| 2389 | 2396 |
else: |
| 2390 |
_DumpDevice(image, rdev.dev_path, 0, size) |
|
| 2397 |
_DumpDevice(image, rdev.dev_path, 0, size, False)
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| 2391 | 2398 |
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| 2392 | 2399 |
|
| 2393 | 2400 |
def BlockdevPauseResumeSync(disks, pause): |
Also available in: Unified diff