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Merge pull request #358 from hglkrijger/master

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fix dd command
This commit is contained in:
Hans Krijger
2016-08-11 14:07:36 -07:00
committed by GitHub
parent c332dd74cb b4379817f9
commit e24bfe6972
1 changed files with 9 additions and 2 deletions
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azurelinuxagent/daemon/resourcedisk/default.py
+9 -2
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@@ -204,16 +204,23 @@ class ResourceDiskHandler(object):
if ret == 0:
return ret
logger.info("fallocate unsuccessful, falling back to dd")
# dd fallback
dd_maxbs = 64 * 1024 ** 2
dd_cmd = "umask 0077 && dd if=/dev/zero bs={0} count={1} conv=notrunc of={2}"
blocks = int(nbytes / dd_maxbs)
if blocks > 0:
ret = shellutil.run(dd_cmd.format(dd_maxbs, fn_sh, blocks)) << 8
ret = shellutil.run(dd_cmd.format(dd_maxbs, blocks, fn_sh)) << 8
remains = int(nbytes % dd_maxbs)
if remains > 0:
ret += shellutil.run(dd_cmd.format(remains, fn_sh, 1))
ret += shellutil.run(dd_cmd.format(remains, 1, fn_sh))
if ret == 0:
logger.info("dd successful")
else:
logger.error("dd unsuccessful")
return ret