mirror of
https://github.com/xcat2/confluent.git
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789376029d
Fix various callbacks when using IPv6 based deployment. Do not attempt to restore erroneously cloned zram partitions. Convert LVM names to new LVM names consistent with source naming scheme. Push new kernel command line into /boot/loader and /etc/kernel/cmdline.
511 lines
21 KiB
Python
511 lines
21 KiB
Python
#!/usr/bin/python3
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import glob
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import json
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import os
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import re
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import time
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import shutil
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import socket
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import stat
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import struct
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import sys
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import subprocess
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import traceback
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bootuuid = None
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vgname = 'localstorage'
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oldvgname = None
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def convert_lv(oldlvname):
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if oldvgname is None:
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return None
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return oldlvname.replace(oldvgname, vgname)
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def get_partname(devname, idx):
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if devname[-1] in '0123456789':
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return '{}p{}'.format(devname, idx)
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else:
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return '{}{}'.format(devname, idx)
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def get_next_part_meta(img, imgsize):
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if img.tell() == imgsize:
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return None
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pathlen = struct.unpack('!H', img.read(2))[0]
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mountpoint = img.read(pathlen).decode('utf8')
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jsonlen = struct.unpack('!I', img.read(4))[0]
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metadata = json.loads(img.read(jsonlen).decode('utf8'))
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img.seek(16, 1) # skip the two 64-bit values we don't use, they are in json
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nextlen = struct.unpack('!H', img.read(2))[0]
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img.seek(nextlen, 1) # skip filesystem type
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nextlen = struct.unpack('!H', img.read(2))[0]
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img.seek(nextlen, 1) # skip orig devname (redundant with json)
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nextlen = struct.unpack('!H', img.read(2))[0]
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img.seek(nextlen, 1) # skip padding
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nextlen = struct.unpack('!Q', img.read(8))[0]
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img.seek(nextlen, 1) # go to next section
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return metadata
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def get_multipart_image_meta(img):
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img.seek(0, 2)
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imgsize = img.tell()
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img.seek(16)
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seekamt = img.read(1)
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img.seek(struct.unpack('B', seekamt)[0], 1)
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partinfo = get_next_part_meta(img, imgsize)
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while partinfo:
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yield partinfo
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partinfo = get_next_part_meta(img, imgsize)
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def get_image_metadata(imgpath):
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with open(imgpath, 'rb') as img:
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header = img.read(16)
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if header == b'\x63\x7b\x9d\x26\xb7\xfd\x48\x30\x89\xf9\x11\xcf\x18\xfd\xff\xa1':
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for md in get_multipart_image_meta(img):
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if md.get('device', '').startswith('/dev/zram'):
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continue
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yield md
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else:
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raise Exception('Installation from single part image not supported')
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class PartedRunner():
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def __init__(self, disk):
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self.disk = disk
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def run(self, command, check=True):
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command = command.split()
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command = ['parted', '-a', 'optimal', '-s', self.disk] + command
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if check:
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return subprocess.check_output(command).decode('utf8')
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else:
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return subprocess.run(command, stdout=subprocess.PIPE).stdout.decode('utf8')
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def fixup(rootdir, vols):
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devbymount = {}
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for vol in vols:
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devbymount[vol['mount']] = vol['targetdisk']
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fstabfile = os.path.join(rootdir, 'etc/fstab')
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with open(fstabfile) as tfile:
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fstab = tfile.read().split('\n')
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while not fstab[0]:
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fstab = fstab[1:]
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if os.path.exists(os.path.join(rootdir, '.autorelabel')):
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os.unlink(os.path.join(rootdir, '.autorelabel'))
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with open(fstabfile, 'w') as tfile:
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for tab in fstab:
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entry = tab.split()
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if tab.startswith('#ORIGFSTAB#'):
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if entry[1] in devbymount:
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targetdev = devbymount[entry[1]]
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if targetdev.startswith('/dev/{}/'.format(vgname)):
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entry[0] = targetdev
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else:
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uuid = subprocess.check_output(['blkid', '-s', 'UUID', '-o', 'value', targetdev]).decode('utf8')
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uuid = uuid.strip()
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entry[0] = 'UUID={}'.format(uuid)
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elif entry[2] == 'swap':
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entry[0] = '/dev/mapper/{}-swap'.format(vgname)
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entry[0] = entry[0].ljust(42)
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entry[1] = entry[1].ljust(16)
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entry[3] = entry[3].ljust(28)
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tab = '\t'.join(entry)
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tfile.write(tab + '\n')
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with open(os.path.join(rootdir, 'etc/hostname'), 'w') as nameout:
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nameout.write(socket.gethostname() + '\n')
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selinuxconfig = os.path.join(rootdir, 'etc/selinux/config')
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policy = None
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if os.path.exists(selinuxconfig):
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with open(selinuxconfig) as cfgin:
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sec = cfgin.read().split('\n')
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for l in sec:
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l = l.split('#', 1)[0]
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if l.startswith('SELINUXTYPE='):
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_, policy = l.split('=')
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for sshkey in glob.glob(os.path.join(rootdir, 'etc/ssh/*_key*')):
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os.unlink(sshkey)
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for sshkey in glob.glob('/etc/ssh/*_key*'):
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newkey = os.path.join(rootdir, sshkey[1:])
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shutil.copy2(sshkey, newkey)
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finfo = os.stat(sshkey)
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os.chown(newkey, finfo[stat.ST_UID], finfo[stat.ST_GID])
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for ifcfg in glob.glob(os.path.join(rootdir, 'etc/sysconfig/network-scripts/*')):
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os.unlink(ifcfg)
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for ifcfg in glob.glob(os.path.join(rootdir, 'etc/NetworkManager/system-connections/*')):
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os.unlink(ifcfg)
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for ifcfg in glob.glob('/run/NetworkManager/system-connections/*'):
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newcfg = ifcfg.split('/')[-1]
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newcfg = os.path.join(rootdir, 'etc/NetworkManager/system-connections/{0}'.format(newcfg))
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shutil.copy2(ifcfg, newcfg)
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shutil.rmtree(os.path.join(rootdir, 'etc/confluent/'))
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shutil.copytree('/etc/confluent', os.path.join(rootdir, 'etc/confluent'))
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if policy:
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sys.stdout.write('Applying SELinux labeling...')
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sys.stdout.flush()
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subprocess.check_call(['setfiles', '-r', rootdir, os.path.join(rootdir, 'etc/selinux/{}/contexts/files/file_contexts'.format(policy)), os.path.join(rootdir, 'etc')])
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subprocess.check_call(['setfiles', '-r', rootdir, os.path.join(rootdir, 'etc/selinux/{}/contexts/files/file_contexts'.format(policy)), os.path.join(rootdir, 'opt')])
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sys.stdout.write('Done\n')
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sys.stdout.flush()
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for metafs in ('proc', 'sys', 'dev'):
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subprocess.check_call(['mount', '-o', 'bind', '/{}'.format(metafs), os.path.join(rootdir, metafs)])
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if os.path.exists(os.path.join(rootdir, 'etc/lvm/devices/system.devices')):
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os.remove(os.path.join(rootdir, 'etc/lvm/devices/system.devices'))
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grubsyscfg = os.path.join(rootdir, 'etc/sysconfig/grub')
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if not os.path.exists(grubsyscfg):
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grubsyscfg = os.path.join(rootdir, 'etc/default/grub')
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kcmdline = os.path.join(rootdir, 'etc/kernel/cmdline')
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if os.path.exists(kcmdline):
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with open(kcmdline) as kcmdlinein:
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kcmdlinecontent = kcmdlinein.read()
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newkcmdlineent = []
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for ent in kcmdlinecontent.split():
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if ent.startswith('resume='):
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newkcmdlineent.append('resume={}'.format(newswapdev))
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elif ent.startswith('root='):
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newkcmdlineent.append('root={}'.format(newrootdev))
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elif ent.startswith('rd.lvm.lv='):
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ent = convert_lv(ent)
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if ent:
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newkcmdlineent.append(ent)
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else:
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newkcmdlineent.append(ent)
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with open(kcmdline, 'w') as kcmdlineout:
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kcmdlineout.write(' '.join(newkcmdlineent) + '\n')
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for loadent in glob.glob(os.path.join(rootdir, 'boot/loader/entries/*.conf')):
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with open(loadent) as loadentin:
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currentry = loadentin.read().split('\n')
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with open(loadent, 'w') as loadentout:
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for cfgline in currentry:
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cfgparts = cfgline.split()
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if not cfgparts or cfgparts[0] != 'options':
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loadentout.write(cfgline + '\n')
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continue
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newcfgparts = [cfgparts[0]]
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for cfgpart in cfgparts[1:]:
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if cfgpart.startswith('root='):
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newcfgparts.append('root={}'.format(newrootdev))
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elif cfgpart.startswith('resume='):
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newcfgparts.append('resume={}'.format(newswapdev))
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elif cfgpart.startswith('rd.lvm.lv='):
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cfgpart = convert_lv(cfgpart)
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if cfgpart:
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newcfgparts.append(cfgpart)
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else:
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newcfgparts.append(cfgpart)
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loadentout.write(' '.join(newcfgparts) + '\n')
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with open(grubsyscfg) as defgrubin:
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defgrub = defgrubin.read().split('\n')
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with open(grubsyscfg, 'w') as defgrubout:
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for gline in defgrub:
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gline = gline.split()
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newline = []
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for ent in gline:
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if ent.startswith('resume='):
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newline.append('resume={}'.format(newswapdev))
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elif ent.startswith('root='):
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newline.append('root={}'.format(newrootdev))
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elif ent.startswith('rd.lvm.lv='):
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ent = convert_lv(ent)
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if ent:
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newline.append(ent)
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else:
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newline.append(ent)
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defgrubout.write(' '.join(newline) + '\n')
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grubcfg = subprocess.check_output(['find', os.path.join(rootdir, 'boot'), '-name', 'grub.cfg']).decode('utf8').strip().replace(rootdir, '/').replace('//', '/')
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grubcfg = grubcfg.split('\n')
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if not grubcfg[-1]:
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grubcfg = grubcfg[:-1]
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if len(grubcfg) == 1:
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grubcfg = grubcfg[0]
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else:
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for gcfg in grubcfg:
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rgcfg = os.path.join(rootdir, gcfg[1:]) # gcfg has a leading / to get rid of
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if os.stat(rgcfg).st_size > 256:
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grubcfg = gcfg
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else:
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with open(rgcfg, 'r') as gin:
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tgrubcfg = gin.read()
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tgrubcfg = tgrubcfg.split('\n')
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if 'search --no-floppy --fs-uuid --set=dev' in tgrubcfg[0]:
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tgrubcfg[0] = 'search --no-floppy --fs-uuid --set=dev ' + bootuuid
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with open(rgcfg, 'w') as gout:
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for gcline in tgrubcfg:
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gout.write(gcline)
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gout.write('\n')
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try:
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subprocess.check_call(['chroot', rootdir, 'grub2-mkconfig', '-o', grubcfg])
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except Exception as e:
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print(repr(e))
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print(rootdir)
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print(grubcfg)
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time.sleep(86400)
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newroot = None
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with open('/etc/shadow') as shadowin:
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shents = shadowin.read().split('\n')
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for shent in shents:
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shent = shent.split(':')
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if not shent:
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continue
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if shent[0] == 'root' and shent[1] not in ('*', '!!', ''):
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newroot = shent[1]
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if newroot:
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shlines = None
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with open(os.path.join(rootdir, 'etc/shadow')) as oshadow:
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shlines = oshadow.read().split('\n')
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with open(os.path.join(rootdir, 'etc/shadow'), 'w') as oshadow:
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for line in shlines:
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if line.startswith('root:'):
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line = line.split(':')
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line[1] = newroot
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line = ':'.join(line)
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oshadow.write(line + '\n')
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partnum = None
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targblock = None
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for vol in vols:
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if vol['mount'] == '/boot/efi':
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targdev = vol['targetdisk']
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partnum = re.search('(\d+)$', targdev).group(1)
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targblock = re.search('(.*)\d+$', targdev).group(1)
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if targblock:
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if targblock.endswith('p') and 'nvme' in targblock:
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targblock = targblock[:-1]
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shimpath = subprocess.check_output(['find', os.path.join(rootdir, 'boot/efi'), '-name', 'shimx64.efi']).decode('utf8').strip()
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shimpath = shimpath.replace(rootdir, '/').replace('/boot/efi', '').replace('//', '/').replace('/', '\\')
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subprocess.check_call(['efibootmgr', '-c', '-d', targblock, '-l', shimpath, '--part', partnum])
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#other network interfaces
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def had_swap():
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with open('/etc/fstab') as tabfile:
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tabs = tabfile.read().split('\n')
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for tab in tabs:
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tab = tab.split()
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if len(tab) < 3:
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continue
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if tab[2] == 'swap':
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return True
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return False
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newrootdev = None
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newswapdev = None
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def install_to_disk(imgpath):
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global bootuuid
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global newrootdev
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global newswapdev
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global vgname
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global oldvgname
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lvmvols = {}
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deftotsize = 0
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mintotsize = 0
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deflvmsize = 0
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minlvmsize = 0
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biggestsize = 0
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biggestfs = None
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plainvols = {}
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allvols = []
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swapsize = 0
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if had_swap():
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with open('/proc/meminfo') as meminfo:
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swapsize = meminfo.read().split('\n')[0]
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swapsize = int(swapsize.split()[1])
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if swapsize < 2097152:
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swapsize = swapsize * 2
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elif swapsize > 8388608 and swapsize < 67108864:
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swapsize = swapsize * 0.5
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elif swapsize >= 67108864:
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swapsize = 33554432
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swapsize = int(swapsize * 1024)
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deftotsize = swapsize
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mintotsize = swapsize
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for fs in get_image_metadata(imgpath):
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allvols.append(fs)
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deftotsize += fs['initsize']
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mintotsize += fs['minsize']
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if fs['initsize'] > biggestsize:
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biggestfs = fs
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biggestsize = fs['initsize']
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if fs['device'].startswith('/dev/mapper'):
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oldvgname = fs['device'].rsplit('/', 1)[-1]
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if '_' in oldvgname and '-' in oldvgname.split('_')[-1]:
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oldvgname = oldvgname.rsplit('-', 1)[0]
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osname = oldvgname.split('_')[0]
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nodename = socket.gethostname().split('.')[0]
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vgname = '{}_{}'.format(osname, nodename)
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lvmvols[fs['device'].replace('/dev/mapper/', '')] = fs
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deflvmsize += fs['initsize']
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minlvmsize += fs['minsize']
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else:
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plainvols[int(re.search('(\d+)$', fs['device'])[0])] = fs
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with open('/tmp/installdisk') as diskin:
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instdisk = diskin.read()
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instdisk = '/dev/' + instdisk
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parted = PartedRunner(instdisk)
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dinfo = parted.run('unit s print', check=False)
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dinfo = dinfo.split('\n')
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sectors = 0
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sectorsize = 0
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for inf in dinfo:
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if inf.startswith('Disk {0}:'.format(instdisk)):
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_, sectors = inf.split(': ')
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sectors = int(sectors.replace('s', ''))
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if inf.startswith('Sector size (logical/physical):'):
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_, sectorsize = inf.split(':')
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sectorsize = sectorsize.split('/')[0]
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sectorsize = sectorsize.replace('B', '')
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sectorsize = int(sectorsize)
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# for now, only support resizing/growing the largest partition
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minexcsize = deftotsize - biggestfs['initsize']
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mintotsize = deftotsize - biggestfs['initsize'] + biggestfs['minsize']
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minsectors = mintotsize // sectorsize
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if sectors < (minsectors + 65536):
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raise Exception('Disk too small to fit image')
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biggestsectors = sectors - (minexcsize // sectorsize)
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biggestsize = sectorsize * biggestsectors
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parted.run('mklabel gpt')
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curroffset = 2048
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for volidx in sorted(plainvols):
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vol = plainvols[volidx]
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if vol is not biggestfs:
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size = vol['initsize'] // sectorsize
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else:
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size = biggestsize // sectorsize
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size += 2047 - (size % 2048)
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end = curroffset + size
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if end > sectors:
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end = sectors
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parted.run('mkpart primary {}s {}s'.format(curroffset, end))
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vol['targetdisk'] = get_partname(instdisk, volidx)
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if vol['mount'] == '/':
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newrootdev = vol['targetdisk']
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curroffset += size + 1
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if not lvmvols:
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if swapsize:
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swapsize = swapsize // sectorsize
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swapsize += 2047 - (size % 2048)
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end = curroffset + swapsize
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if end > sectors:
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end = sectors
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parted.run('mkpart swap {}s {}s'.format(curroffset, end))
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newswapdev = get_partname(instdisk, volidx + 1)
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subprocess.check_call(['mkswap', newswapdev])
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else:
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parted.run('mkpart lvm {}s 100%'.format(curroffset))
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lvmpart = get_partname(instdisk, volidx + 1)
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subprocess.check_call(['pvcreate', '-ff', '-y', lvmpart])
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subprocess.check_call(['vgcreate', vgname, lvmpart])
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vginfo = subprocess.check_output(['vgdisplay', vgname, '--units', 'b']).decode('utf8')
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vginfo = vginfo.split('\n')
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pesize = 0
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pes = 0
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for infline in vginfo:
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infline = infline.split()
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if len(infline) >= 3 and infline[:2] == ['PE', 'Size']:
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pesize = int(infline[2])
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if len(infline) >= 5 and infline[:2] == ['Free', 'PE']:
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pes = int(infline[4])
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takeaway = swapsize // pesize
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for volidx in lvmvols:
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vol = lvmvols[volidx]
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if vol is biggestfs:
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continue
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takeaway += vol['initsize'] // pesize
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takeaway += 1
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biggestextents = pes - takeaway
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for volidx in lvmvols:
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vol = lvmvols[volidx]
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if vol is biggestfs:
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extents = biggestextents
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else:
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extents = vol['initsize'] // pesize
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extents += 1
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if vol['mount'] == '/':
|
|
lvname = 'root'
|
|
|
|
else:
|
|
lvname = vol['mount'].replace('/', '_')
|
|
subprocess.check_call(['lvcreate', '-l', '{}'.format(extents), '-y', '-n', lvname, vgname])
|
|
vol['targetdisk'] = '/dev/{}/{}'.format(vgname, lvname)
|
|
if vol['mount'] == '/':
|
|
newrootdev = vol['targetdisk']
|
|
if swapsize:
|
|
subprocess.check_call(['lvcreate', '-y', '-l', '{}'.format(swapsize // pesize), '-n', 'swap', vgname])
|
|
subprocess.check_call(['mkswap', '/dev/{}/swap'.format(vgname)])
|
|
newswapdev = '/dev/{}/swap'.format(vgname)
|
|
os.makedirs('/run/imginst/targ')
|
|
for vol in allvols:
|
|
with open(vol['targetdisk'], 'wb') as partition:
|
|
partition.write(b'\x00' * 1 * 1024 * 1024)
|
|
subprocess.check_call(['mkfs.{}'.format(vol['filesystem']), vol['targetdisk']])
|
|
subprocess.check_call(['mount', vol['targetdisk'], '/run/imginst/targ'])
|
|
source = vol['mount'].replace('/', '_')
|
|
source = '/run/imginst/sources/' + source
|
|
blankfsstat = os.statvfs('/run/imginst/targ')
|
|
blankused = (blankfsstat.f_blocks - blankfsstat.f_bfree) * blankfsstat.f_bsize
|
|
sys.stdout.write('\nWriting {0}: '.format(vol['mount']))
|
|
with subprocess.Popen(['cp', '-ax', source + '/.', '/run/imginst/targ']) as copier:
|
|
stillrunning = copier.poll()
|
|
lastprogress = 0.0
|
|
while stillrunning is None:
|
|
currfsstat = os.statvfs('/run/imginst/targ')
|
|
currused = (currfsstat.f_blocks - currfsstat.f_bfree) * currfsstat.f_bsize
|
|
currused -= blankused
|
|
with open('/proc/meminfo') as meminf:
|
|
for line in meminf.read().split('\n'):
|
|
if line.startswith('Dirty:'):
|
|
_, dirty, _ = line.split()
|
|
dirty = int(dirty) * 1024
|
|
progress = (currused - dirty) / vol['minsize']
|
|
if progress < lastprogress:
|
|
progress = lastprogress
|
|
if progress > 0.99:
|
|
progress = 0.99
|
|
lastprogress = progress
|
|
progress = progress * 100
|
|
sys.stdout.write('\x1b[1K\rWriting {0}: {1:3.2f}%'.format(vol['mount'], progress))
|
|
sys.stdout.flush()
|
|
time.sleep(0.5)
|
|
stillrunning = copier.poll()
|
|
if stillrunning != 0:
|
|
raise Exception("Error copying volume")
|
|
with subprocess.Popen(['sync']) as syncrun:
|
|
stillrunning = syncrun.poll()
|
|
while stillrunning is None:
|
|
with open('/proc/meminfo') as meminf:
|
|
for line in meminf.read().split('\n'):
|
|
if line.startswith('Dirty:'):
|
|
_, dirty, _ = line.split()
|
|
dirty = int(dirty) * 1024
|
|
progress = (vol['minsize'] - dirty) / vol['minsize']
|
|
if progress < lastprogress:
|
|
progress = lastprogress
|
|
if progress > 0.99:
|
|
progress = 0.99
|
|
lastprogress = progress
|
|
progress = progress * 100
|
|
sys.stdout.write('\x1b[1K\rWriting {0}: {1:3.2f}%'.format(vol['mount'], progress))
|
|
sys.stdout.flush()
|
|
time.sleep(0.5)
|
|
stillrunning = syncrun.poll()
|
|
sys.stdout.write('\x1b[1K\rDone writing {0}'.format(vol['mount']))
|
|
sys.stdout.write('\n')
|
|
sys.stdout.flush()
|
|
if vol['mount'] == '/boot':
|
|
tbootuuid = subprocess.check_output(['blkid', vol['targetdisk']])
|
|
if b'UUID="' in tbootuuid:
|
|
bootuuid = tbootuuid.split(b'UUID="', 1)[1].split(b'"')[0].decode('utf8')
|
|
|
|
|
|
|
|
|
|
subprocess.check_call(['umount', '/run/imginst/targ'])
|
|
for vol in allvols:
|
|
subprocess.check_call(['mount', vol['targetdisk'], '/run/imginst/targ/' + vol['mount']])
|
|
fixup('/run/imginst/targ', allvols)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
try:
|
|
install_to_disk(os.environ['mountsrc'])
|
|
except Exception:
|
|
traceback.print_exc()
|
|
time.sleep(86400)
|
|
raise
|