Revision 42143c5b
| b/tools/lvmstrap | ||
|---|---|---|
| 54 | 54 |
|
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USAGE = ("\tlvmstrap diskinfo\n"
|
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"\tlvmstrap [--vg-name=NAME] [--allow-removable]" |
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" { --alldisks | --disks DISKLIST }"
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|
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" { --alldisks | --disks DISKLIST } [--use-sfdisk]"
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" create") |
| 59 | 59 |
|
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verbose_flag = False |
| ... | ... | |
| 85 | 85 |
|
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#: Minimum partition size to be considered (1 GB) |
| 87 | 87 |
PART_MINSIZE = 1024 * 1024 * 1024 |
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|
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MBR_MAX_SIZE = 2 * 10**12 |
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|
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class Error(Exception): |
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"""Generic exception""" |
| ... | ... | |
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parser.add_option("-g", "--vg-name", type="string",
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dest="vgname", default="xenvg", metavar="NAME", |
| 190 | 190 |
help="the volume group to be created [default: xenvg]") |
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parser.add_option("--use-sfdisk", dest="use_sfdisk",
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action="store_true", default=False, |
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help="use sfdisk instead of parted") |
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| 191 | 194 |
|
| 192 | 195 |
|
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options, args = parser.parse_args() |
| ... | ... | |
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name) |
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def PartitionDisk(name): |
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def PartitionDisk(name, use_sfdisk):
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"""Partitions a disk. |
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This function creates a single partition spanning the entire disk, |
| ... | ... | |
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@param name: the device name, e.g. sda |
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|
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""" |
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result = ExecCommand( |
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'echo ,,8e, | sfdisk /dev/%s' % name) |
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|
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# Check that parted exists |
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result = ExecCommand("parted --help")
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if result.failed: |
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raise OperationalError("CRITICAL: disk %s which I have just partitioned"
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" cannot reread its partition table, or there" |
|
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" is some other sfdisk error. Likely, it is in" |
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" use. You have to clean this yourself. Error" |
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" message from sfdisk: %s" % |
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(name, result.output)) |
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use_sfdisk = True |
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print >> sys.stderr, ("Unable to execute \"parted --help\","
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" falling back to sfdisk.") |
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|
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# Check disk size - over 2TB means we need to use GPT |
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size = ReadSize("/sys/block/%s" % name)
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if size > MBR_MAX_SIZE: |
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label_type = "gpt" |
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if use_sfdisk: |
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raise OperationalError("Critical: Disk larger than 2TB detected, but"
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" parted is either not installed or --use-sfdisk" |
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" has been specified") |
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else: |
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label_type = "msdos" |
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|
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if use_sfdisk: |
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result = ExecCommand( |
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"echo ,,8e, | sfdisk /dev/%s" % name) |
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if result.failed: |
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raise OperationalError("CRITICAL: disk %s which I have just partitioned"
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" cannot reread its partition table, or there" |
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" is some other sfdisk error. Likely, it is in" |
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" use. You have to clean this yourself. Error" |
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" message from sfdisk: %s" % |
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(name, result.output)) |
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|
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else: |
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result = ExecCommand("parted -s /dev/%s mklabel %s" % (name, label_type))
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if result.failed: |
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raise OperationalError("Critical: failed to create %s label on %s" %
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(label_type,name)) |
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result = ExecCommand("parted -s /dev/%s mkpart pri ext2 1 100%%" % name)
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if result.failed: |
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raise OperationalError("Critical: failed to create partition on %s" %
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name) |
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result = ExecCommand("parted -s /dev/%s set 1 lvm on" % name)
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if result.failed: |
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raise OperationalError("Critical: failed to set partition on %s to LVM" %
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name) |
|
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|
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|
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def CreatePVOnDisk(name): |
| ... | ... | |
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for disk in disklist: |
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WipeDisk(disk) |
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if IsPartitioned(disk): |
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PartitionDisk(disk) |
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PartitionDisk(disk, options.use_sfdisk)
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for disk in disklist: |
| 866 | 903 |
CreatePVOnDisk(disk) |
| 867 | 904 |
CreateVG(vgname, disklist) |
Also available in: Unified diff