Revision b98bb41e
| b/tools/lvmstrap | ||
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| 44 | 44 |
import sys |
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import optparse |
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import time |
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import errno |
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|
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from ganeti.utils import RunCmd, ReadFile |
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from ganeti import constants |
| ... | ... | |
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|
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dev = ReadDev("/sys/block/%s" % name)
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CheckSysDev(name, dev) |
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inuse = not CheckReread(name)
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inuse = InUse(name)
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# Enumerate partitions of the block device |
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partitions = [] |
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for partname in os.listdir("/sys/block/%s" % name):
|
| ... | ... | |
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print line |
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def CheckSysfsHolders(name): |
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"""Check to see if a device is 'hold' at sysfs level. |
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This is usually the case for Physical Volumes under LVM. |
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@rtype: boolean |
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@return: true if the device is available according to sysfs |
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""" |
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try: |
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contents = os.listdir("/sys/block/%s/holders/" % name)
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except OSError, err: |
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if err.errno == errno.ENOENT: |
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contents = [] |
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else: |
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raise |
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return not bool(contents) |
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def CheckReread(name): |
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"""Check to see if a block device is in use. |
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|
| ... | ... | |
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return result.failed |
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def InUse(name): |
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"""Returns if a disk is in use or not. |
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""" |
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return not (CheckSysfsHolders(name) and CheckReread(name)) |
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def WipeDisk(name): |
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"""Wipes a block device. |
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|
| ... | ... | |
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|
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""" |
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if not CheckReread(name):
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if InUse(name):
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raise OperationalError("CRITICAL: disk %s you selected seems to be in"
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" use. ABORTING!" % name) |
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|
| ... | ... | |
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" %d. I don't know how to cleanup. Sorry." % |
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(name, bytes_written)) |
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if not CheckReread(name): |
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if InUse(name): |
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# try to restore the data |
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fd = os.open("/dev/%s" % name, os.O_RDWR | os.O_SYNC)
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os.write(fd, olddata) |
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os.close(fd) |
Also available in: Unified diff