/[gli]/trunk/src/GLIStorageDevice.py
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Contents of /trunk/src/GLIStorageDevice.py

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  src/net/server/handlers/WebGLIHandler.py:
  added support for creating generic disks

1 codeman 851 # Copyright 1999-2005 Gentoo Foundation
2     # This source code is distributed under the terms of version 2 of the GNU
3     # General Public License as published by the Free Software Foundation, a copy
4     # of which can be found in the main directory of this project.
5    
6 agaffney 535 import commands, string, os, parted
7 agaffney 556 from GLIException import *
8 agaffney 595 import GLIUtility
9 agaffney 107
10 agaffney 492 MEGABYTE = 1024 * 1024
11    
12 agaffney 639 # these are here so that we can change them easily in future
13     # the values were chosen to represent perfect floating point representations
14     FREE_MINOR_FRAC_PRI = 1.0/32.0
15     FREE_MINOR_FRAC_LOG = 1.0/8.0
16    
17 agaffney 497 archinfo = { 'sparc': { 'fixedparts': [ { 'minor': 3, 'type': "wholedisk" } ], 'disklabel': 'sun', 'extended': False },
18 agaffney 912 'hppa': { 'fixedparts': [ { 'minor': 1, 'type': "palo" } ], 'disklabel': 'msdos', 'extended': True },
19 agaffney 497 'x86': { 'fixedparts': [], 'disklabel': 'msdos', 'extended': True },
20 agaffney 595 'amd64': { 'fixedparts': [], 'disklabel': 'msdos', 'extended': True },
21 agaffney 497 'ppc': { 'fixedparts': [ { 'minor': 1, 'type': "metadata" } ], 'disklabel': 'mac', 'extended': False }
22     }
23    
24 agaffney 513 ##
25     # This class provides a partitioning abstraction for the frontends
26 agaffney 107 class Device:
27     "Class representing a partitionable device."
28    
29     _device = None
30     _partitions = None
31     _geometry = None
32     _total_bytes = 0
33     _total_sectors = 0
34     _cylinder_bytes = 0
35     _sectors_in_cylinder = 0
36     _parted_dev = None
37     _parted_disk = None
38 agaffney 212 _sector_bytes = 0
39 agaffney 492 _total_mb = 0
40     _arch = None
41 agaffney 595 _disklabel = None
42 agaffney 492
43 agaffney 509 ##
44 agaffney 513 # Initialization function for GLIStorageDevice class
45     # @param device Device node (e.g. /dev/hda) of device being represented
46     # @param arch="x86" Architecture that we're partition for (defaults to 'x86' for now)
47 agaffney 1037 def __init__(self, device, arch="x86", set_geometry=True, virtual=False, local_device=True):
48 agaffney 107 self._device = device
49     self._partitions = {}
50     self._geometry = {'cylinders': 0, 'heads': 0, 'sectors': 0, 'sectorsize': 512}
51     self._total_bytes = 0
52     self._cylinder_bytes = 0
53 agaffney 492 self._arch = arch
54 agaffney 1037 self._local_device = local_device
55     if self._local_device:
56     self._parted_dev = parted.PedDevice.get(self._device)
57     try:
58     self._parted_disk = parted.PedDisk.new(self._parted_dev)
59     except:
60     self._parted_disk = self._parted_dev.disk_new_fresh(parted.disk_type_get(archinfo[self._arch]['disklabel']))
61 agaffney 1038 self._disklabel = self._parted_disk.type.name
62     else:
63     self._disklabel = archinfo[self._arch]['disklabel']
64 agaffney 596 if set_geometry:
65     self.set_disk_geometry_from_disk()
66 agaffney 107
67 agaffney 509 ##
68 agaffney 513 # Sets disk geometry info from disk. This function is used internally by __init__()
69 agaffney 107 def set_disk_geometry_from_disk(self):
70     self._total_bytes = self._parted_dev.length * self._parted_dev.sector_size
71 agaffney 205 self._geometry['heads'], self._geometry['sectors'], self._geometry['cylinders'] = self._parted_dev.heads, self._parted_dev.sectors, self._parted_dev.cylinders
72 agaffney 212 self._sector_bytes = self._parted_dev.sector_size
73     self._cylinder_bytes = self._geometry['heads'] * self._geometry['sectors'] * self._sector_bytes
74     self._total_sectors = self._parted_dev.length
75 agaffney 107 self._sectors_in_cylinder = self._geometry['heads'] * self._geometry['sectors']
76 agaffney 635 self._total_mb = long(self._total_bytes / MEGABYTE)
77 agaffney 107
78 agaffney 509 ##
79 agaffney 513 # Sets partition info from disk.
80 agaffney 107 def set_partitions_from_disk(self):
81 agaffney 492 last_part = 0
82     last_log_part = 4
83 agaffney 107 parted_part = self._parted_disk.next_partition()
84 agaffney 492 while parted_part:
85 agaffney 635 part_mb = long((parted_part.geom.end - parted_part.geom.start + 1) * self._sector_bytes / MEGABYTE)
86 agaffney 492 if parted_part.num >= 1:
87 agaffney 113 fs_type = ""
88     if parted_part.fs_type != None: fs_type = parted_part.fs_type.name
89     if parted_part.type == 2: fs_type = "extended"
90 agaffney 501 if archinfo[self._arch]['extended'] and parted_part.num > 4:
91     last_log_part = parted_part.num
92     else:
93     last_part = parted_part.num
94 agaffney 492 self._partitions[int(parted_part.num)] = Partition(self, parted_part.num, part_mb, parted_part.geom.start, parted_part.geom.end, fs_type, format=False, existing=True)
95     elif parted_part.type_name == "free":
96 agaffney 640 # parent_part = self.get_partition_at(parted_part.geom.start, ignore_extended=0)
97     # if parent_part:
98 agaffney 668 if self.get_extended_partition() and parted_part.geom.start >= self._partitions[self.get_extended_partition()].get_start() and parted_part.geom.end <= self._partitions[self.get_extended_partition()].get_end():
99 agaffney 639 self._partitions[last_log_part+FREE_MINOR_FRAC_LOG] = Partition(self, last_log_part+FREE_MINOR_FRAC_LOG, part_mb, parted_part.geom.start, parted_part.geom.end, "free", format=False, existing=False)
100 agaffney 492 last_log_part += 1
101     else:
102 agaffney 639 self._partitions[last_part+FREE_MINOR_FRAC_PRI] = Partition(self, last_part+FREE_MINOR_FRAC_PRI, part_mb, parted_part.geom.start, parted_part.geom.end, "free", format=False, existing=False)
103 agaffney 492 last_part += 1
104     parted_part = self._parted_disk.next_partition(parted_part)
105 agaffney 107
106 agaffney 509 ##
107 agaffney 639 # Imports partition info from the install profile partition structure
108 agaffney 513 # @param ips Parameter structure returned from install_profile.get_partition_tables()
109 agaffney 492 def set_partitions_from_install_profile_structure(self, ips):
110 agaffney 596 for part in ips:
111     tmppart = ips[part]
112     existing = False
113     if tmppart['origminor'] and not tmppart['format']:
114     existing = True
115 agaffney 632 self._partitions[tmppart['minor']] = Partition(self, tmppart['minor'], tmppart['mb'], tmppart['start'], tmppart['end'], tmppart['type'], format=tmppart['format'], origminor=tmppart['origminor'], existing=existing, mountpoint=tmppart['mountpoint'], mountopts=tmppart['mountopts'], mkfsopts=tmppart['mkfsopts'])
116 agaffney 492
117 agaffney 509 ##
118 agaffney 513 # Returns name of device (e.g. /dev/hda) being represented
119 agaffney 107 def get_device(self):
120     return self._device
121    
122 agaffney 509 ##
123 agaffney 912 # Uses magic to apply the recommended partition layout
124     def do_recommended(self):
125     free_minor = 0
126 agaffney 924 recommended_parts = [ { 'type': "ext2", 'size': 100, 'mountpoint': "/boot" },
127     { 'type': "linux-swap", 'size': 512, 'mountpoint': "" },
128 agaffney 916 { 'type': "ext3", 'size': "*", 'mountpoint': "/" } ]
129     to_create = []
130 agaffney 925 physical_memory = int(GLIUtility.spawn(r"free -m | egrep '^Mem:' | sed -e 's/^Mem: \+//' -e 's/ \+.\+$//'", return_output=True)[1].strip())
131 agaffney 916 parts = self.get_ordered_partition_list()
132 agaffney 912 for part in parts:
133     if self._partitions[part].get_type() == "free" and self._partitions[part].get_mb() >= 4096:
134     free_minor = part
135 agaffney 916 break
136 agaffney 912 if not free_minor:
137     raise GLIException("RecommendedPartitionLayoutError", "notice", "do_recommended", "You do not have atleast 4GB of concurrent unallocated space. Please remove some partitions and try again.")
138 agaffney 916 remaining_free = self._partitions[free_minor].get_mb()
139     for newpart in recommended_parts:
140 agaffney 923 if archinfo[self._arch]['extended'] and free_minor == (3 + FREE_MINOR_FRAC_PRI) and not newpart == recommended_parts[-1]:
141 agaffney 916 if self.get_extended_partition():
142     raise GLIException("RecommendedPartitionLayoutError", "notice", "do_recommended", "This code is not yet robust enough to handle automatic partitioning with your current layout.")
143     to_create.append({ 'type': "extended", 'size': remaining_free, 'mountpoint': "", 'free_minor': free_minor })
144     free_minor = 4 + FREE_MINOR_FRAC_LOG
145     newpart['free_minor'] = free_minor
146 agaffney 926 if newpart['type'] == "linux-swap" and physical_memory and physical_memory < 1024:
147 agaffney 925 newpart['size'] = physical_memory * 2
148 agaffney 916 to_create.append(newpart)
149     free_minor = free_minor + 1
150     if not newpart['size'] == "*":
151     remaining_free = remaining_free - newpart['size']
152     for newpart in to_create:
153     if newpart['size'] == "*":
154     newpart['size'] = self._partitions[newpart['free_minor']].get_mb()
155     self.add_partition(newpart['free_minor'], newpart['size'], 0, 0, newpart['type'], mountpoint=newpart['mountpoint'])
156 agaffney 912
157     ##
158 agaffney 513 # Combines free space and closes gaps in minor numbers. This is used internally
159 agaffney 494 def tidy_partitions(self):
160     last_minor = 0
161     last_log_minor = 4
162     last_free = 0
163     last_log_free = 0
164     parts = self._partitions.keys()
165     parts.sort()
166     for part in parts:
167 agaffney 497 if archinfo[self._arch]['extended'] and part > 4: break
168 agaffney 494 tmppart = self._partitions[part]
169     if tmppart.get_type() == "extended":
170     for part_log in parts:
171 agaffney 639 if part_log < (4 + FREE_MINOR_FRAC_LOG): continue
172 agaffney 494 tmppart_log = self._partitions[part_log]
173     if tmppart_log.get_type() == "free":
174 agaffney 495 if last_log_minor < last_log_free:
175     self._partitions[last_log_free].set_mb(self._partitions[last_log_free].get_mb()+tmppart_log.get_mb())
176     del self._partitions[part_log]
177 agaffney 494 else:
178 agaffney 495 if not last_log_free:
179 agaffney 639 last_log_free = last_log_minor + FREE_MINOR_FRAC_LOG
180 agaffney 544 else:
181 agaffney 627 last_log_free = part_log
182 agaffney 495 tmppart_log.set_minor(last_log_free)
183     self._partitions[last_log_free] = tmppart_log
184     if part_log != last_log_free: del self._partitions[part_log]
185 agaffney 494 else:
186     if part_log > (last_log_minor + 1):
187     tmppart_log.set_minor(last_log_minor + 1)
188 agaffney 495 last_log_minor = last_log_minor + 1
189     self._partitions[last_log_minor] = tmppart_log
190     del self._partitions[part_log]
191 agaffney 544 else:
192     last_log_minor = part_log
193 agaffney 627 elif tmppart.get_type() == "free":
194 agaffney 495 if last_minor < last_free:
195     self._partitions[last_free].set_mb(self._partitions[last_free].get_mb()+tmppart.get_mb())
196     del self._partitions[part]
197 agaffney 494 else:
198 agaffney 495 if not last_free:
199 agaffney 639 last_free = last_minor + FREE_MINOR_FRAC_PRI
200 agaffney 544 else:
201     last_free = part
202 agaffney 495 tmppart.set_minor(last_free)
203     self._partitions[last_free] = tmppart
204     if part != last_free: del self._partitions[part]
205 agaffney 494 else:
206     if part > (last_minor + 1):
207     tmppart.set_minor(last_minor + 1)
208 agaffney 495 last_minor = last_minor + 1
209     self._partitions[last_minor] = tmppart
210     del self._partitions[part]
211 agaffney 544 else:
212     last_minor = part
213 agaffney 494
214 agaffney 509 ##
215 agaffney 513 # Adds a new partition to the partition info
216     # @param free_minor minor of unallocated space partition is being created in
217     # @param mb size of partition in MB
218     # @param start Start sector (only used for existing partitions)
219     # @param end End sector (only used for existing partitions)
220     # @param type Partition type (ext2, ext3, fat32, linux-swap, free, extended, etc.)
221     # @param mountpoint='' Partition mountpoint
222     # @param mountopts='' Partition mount options
223 agaffney 635 # @param mkfsopts='' Additional mkfs options
224     def add_partition(self, free_minor, mb, start, end, type, mountpoint='', mountopts='',mkfsopts=''):
225 agaffney 1037 if free_minor == -1:
226     tmpparts = self._partitions.keys()
227     tmpparts.sort()
228     tmpminor = tmpparts[-1]
229     if archinfo[self._arch]['extended'] and tmpminor >= 5:
230     free_minor = new_minor + FREE_MINOR_FRAC_LOG
231     else:
232     free_minor = new_minor + FREE_MINOR_FRAC_PRI
233     self._partitions[free_minor] = Partition(self, free_minor, mb, 0, 0, "free")
234 agaffney 492 new_minor = int(free_minor) + 1
235     if self._partitions.has_key(new_minor):
236 agaffney 107 parts = self._partitions.keys()
237     parts.sort()
238     parts.reverse()
239     hole_at = 0
240     for i in range(1, parts[0]+1):
241 agaffney 492 if i <= new_minor: continue
242     if not self._partitions.has_key(i):
243 agaffney 107 hole_at = i
244     break
245     stopscooting = 0
246     for i in parts:
247     if stopscooting: break
248 agaffney 492 if i >= hole_at and hole_at: continue
249     if i >= new_minor:
250 agaffney 107 self._partitions[i].set_minor(i+1)
251     self._partitions[i+1] = self._partitions[i]
252 agaffney 492 if i == new_minor: stopscooting = 1
253 agaffney 494 if mb != self._partitions[free_minor].get_mb():
254     old_free_mb = self._partitions[free_minor].get_mb()
255     del self._partitions[free_minor]
256 agaffney 497 if archinfo[self._arch]['extended'] and new_minor >= 5:
257 agaffney 639 free_minor = new_minor + FREE_MINOR_FRAC_LOG
258 agaffney 494 else:
259 agaffney 639 free_minor = new_minor + FREE_MINOR_FRAC_PRI
260 agaffney 494 self._partitions[free_minor] = Partition(self, free_minor, old_free_mb-mb, 0, 0, "free")
261     else:
262     del self._partitions[free_minor]
263 agaffney 635 self._partitions[new_minor] = Partition(self, new_minor, mb, start, end, type, mountpoint=mountpoint, mountopts=mountopts,mkfsopts=mkfsopts)
264 agaffney 494 if type == "extended":
265 agaffney 639 self._partitions[4 + FREE_MINOR_FRAC_LOG] = Partition(self, (4 + FREE_MINOR_FRAC_LOG), mb, 0, 0, "free")
266 agaffney 494 self.tidy_partitions()
267 agaffney 107
268 agaffney 509 ##
269 agaffney 513 # Removes partition from partition info
270     # @param minor Minor of partition to remove
271 agaffney 107 def remove_partition(self, minor):
272 agaffney 492 tmppart = self._partitions[int(minor)]
273     free_minor = 0
274     if tmppart.is_logical():
275 agaffney 639 free_minor = int(minor-1)+FREE_MINOR_FRAC_LOG
276 agaffney 492 else:
277 agaffney 639 free_minor = int(minor-1)+FREE_MINOR_FRAC_PRI
278     if free_minor in self._partitions:
279     self._partitions[free_minor].set_mb(self._partitions[free_minor].get_mb() + tmppart.get_mb())
280     else:
281     self._partitions[free_minor] = Partition(self, free_minor, tmppart.get_mb(), 0, 0, "free", format=False, existing=False)
282 agaffney 107 del self._partitions[int(minor)]
283 agaffney 494 self.tidy_partitions()
284 agaffney 107
285 agaffney 509 ##
286 agaffney 923 # This function clears the partition table
287     def clear_partitions(self):
288     # parts = self._partitions.keys()
289     # parts.sort()
290     # parts.reverse()
291     # for part in parts:
292     # if not self._partitions[part].get_type() == "free":
293     # self.remove_partition(part)
294     self._partitions = { (0 + FREE_MINOR_FRAC_PRI): Partition(self, (0 + FREE_MINOR_FRAC_PRI), self.get_total_mb(), 0, 0, "free", format=False, existing=False) }
295    
296     ##
297 agaffney 513 # Returns an ordered list (disk order) of partition minors
298 agaffney 107 def get_ordered_partition_list(self):
299 codeman 625 parts = self._partitions.keys()
300     parts.sort()
301     partlist = []
302 agaffney 492 tmppart = None
303     for part in parts:
304 agaffney 639 if archinfo[self._arch]['extended'] and part > (4 + FREE_MINOR_FRAC_PRI): break
305 agaffney 107 tmppart = self._partitions[part]
306 agaffney 492 partlist.append(part)
307 agaffney 107 if tmppart.is_extended():
308     for part_log in parts:
309 agaffney 639 if part_log < (4 + FREE_MINOR_FRAC_LOG): continue
310 agaffney 492 partlist.append(part_log)
311 agaffney 107 return partlist
312    
313 agaffney 509 ##
314 agaffney 513 # Returns partition info in a format suitable for passing to install_profile.set_partition_tables()
315 agaffney 107 def get_install_profile_structure(self):
316     devdic = {}
317     for part in self._partitions:
318     tmppart = self._partitions[part]
319 agaffney 635 devdic[part] = { 'mb': tmppart.get_mb(), 'minor': float(part), 'origminor': tmppart.get_orig_minor(), 'type': tmppart.get_type(), 'mountpoint': tmppart.get_mountpoint(), 'mountopts': tmppart.get_mountopts(), 'format': tmppart.get_format(), 'mkfsopts': tmppart.get_mkfsopts(), 'start': 0, 'end': 0 }
320 agaffney 107 return devdic
321    
322 agaffney 509 ##
323 agaffney 513 # Returns the minor of the extended partition, if any
324 agaffney 183 def get_extended_partition(self):
325     for part in self._partitions:
326     tmppart = self._partitions[part]
327     if tmppart.is_extended():
328     return part
329 agaffney 184 return 0
330 agaffney 183
331 agaffney 509 ##
332 agaffney 624 # Returns the drive model
333     def get_model(self):
334 agaffney 1038 if self._local_device:
335     return self._parted_dev.model
336     else:
337     return "Generic disk"
338 agaffney 624
339     ##
340 agaffney 596 # Sets the disklabel type
341     def set_disklabel(self, disklabel):
342     self._disklabel = disklabel
343    
344     ##
345     # Returns the disklabel type
346     def get_disklabel(self):
347     return self._disklabel
348    
349     ##
350 agaffney 513 # Returns the number of sectors on the device
351 agaffney 107 def get_num_sectors(self):
352 agaffney 635 return long(self._total_sectors)
353 agaffney 107
354 agaffney 509 ##
355 agaffney 513 # Returns the size of a cylinder in bytes
356 agaffney 107 def get_cylinder_size(self):
357 agaffney 635 return long(self._cylinder_bytes)
358 agaffney 107
359 agaffney 509 ##
360 agaffney 513 # Returns the size of a sector in bytes
361 agaffney 212 def get_sector_size(self):
362 agaffney 635 return long(self._sector_bytes)
363 agaffney 212
364 agaffney 509 ##
365 agaffney 513 # Returns the number of cylinders
366 agaffney 107 def get_num_cylinders(self):
367 agaffney 635 return long(self._geometry['cylinders'])
368 agaffney 107
369 agaffney 509 ##
370 agaffney 513 # Returns the total number of bytes on the device
371 agaffney 107 def get_drive_bytes(self):
372 agaffney 635 return long(self._total_bytes)
373 agaffney 107
374 agaffney 509 ##
375 agaffney 513 # Returns the total number of MB on the device
376 agaffney 492 def get_total_mb(self):
377 agaffney 1037 if self._local_device:
378     return self._total_mb
379     else:
380     total_mb = 0
381     for tmppart in self._partitions:
382     total += tmppart.get_mb()
383     return total_mb
384 agaffney 492
385 agaffney 509 ##
386 agaffney 513 # Returns partition info dictionary
387 agaffney 107 def get_partitions(self):
388     return self._partitions
389    
390 agaffney 509 ##
391 agaffney 513 # Prints disk geometry to STDOUT (no longer used)
392 agaffney 107 def print_geometry(self):
393     print self._total_bytes, self._geometry
394    
395 agaffney 513 ##
396     # This class represents a partition within a GLIStorageDevice object
397 agaffney 107 class Partition:
398     "Class representing a single partition within a Device object"
399    
400     _device = None
401 agaffney 492 _minor = 0
402     _orig_minor = 0
403     _start = 0
404     _end = 0
405 agaffney 107 _type = None
406     _mountpoint = None
407     _mountopts = None
408     _format = None
409     _resizeable = None
410 agaffney 523 _min_mb_for_resize = 0
411 agaffney 492 _mb = 0
412 agaffney 631 _mkfsopts = None
413 agaffney 107
414 agaffney 509 ##
415 agaffney 514 # Initialization function for the Partition class
416     # @param device Parent GLIStorageDevice object
417     # @param minor Minor of partition
418     # @param mb Parameter Size of partition in MB
419     # @param start Parameter Start sector of partition
420     # @param end Parameter Start sector of partition
421     # @param type Parameter Type of partition (ext2, ext3, fat32, linux-swap, free, extended, etc.)
422     # @param mountpoint='' Mountpoint of partition
423     # @param mountopts='' Mount options of partition
424 agaffney 635 # @param mkfsopts='' Additional mkfs options
425 agaffney 514 # @param format=True Format partition
426     # @param existing=False This partition exists on disk
427 agaffney 631 def __init__(self, device, minor, mb, start, end, type, mountpoint='', mountopts='', format=True, existing=False, origminor=0, mkfsopts=''):
428 agaffney 107 self._device = device
429 agaffney 492 self._minor = float(minor)
430 agaffney 635 self._start = long(start)
431     self._end = long(end)
432 agaffney 492 self._type = type or "unknown"
433 agaffney 107 self._mountpoint = mountpoint
434     self._mountopts = mountopts
435     self._format = format
436 agaffney 492 self._mb = mb
437 agaffney 596 self._orig_minor = origminor
438 agaffney 631 self._mkfsopts = mkfsopts
439 agaffney 596 if type != "free":
440     if existing and not origminor:
441     self._orig_minor = self._minor
442     self._minor = int(self._minor)
443     self._orig_minor = int(self._orig_minor)
444 agaffney 231 if existing:
445 agaffney 826 try:
446     parted_part = device._parted_disk.get_partition(self._orig_minor)
447     label_type = device._parted_disk.type.name
448     if label_type == "loop":
449     dev_node = device._device
450     else:
451     dev_node = device._device + str(self._orig_minor)
452     # print "dev_node = " + dev_node
453     if type == "ntfs":
454     min_bytes = long(commands.getoutput("ntfsresize -f --info " + dev_node + " | grep -e '^You might resize' | sed -e 's/You might resize at //' -e 's/ bytes or .\+//'"))
455     self._min_mb_for_resize = long(min_bytes / MEGABYTE) + 1
456     self._resizeable = True
457     elif type == "ext2" or type == "ext3":
458     block_size = long(string.strip(commands.getoutput("dumpe2fs -h " + dev_node + r" 2>&1 | grep -e '^Block size:' | sed -e 's/^Block size:\s\+//'")))
459     free_blocks = long(string.strip(commands.getoutput("dumpe2fs -h " + dev_node + r" 2>&1 | grep -e '^Free blocks:' | sed -e 's/^Free blocks:\s\+//'")))
460     free_bytes = long(block_size * free_blocks)
461     # can't hurt to pad (the +50) it a bit since this is really just a guess
462     self._min_mb_for_resize = self._mb - long(free_bytes / MEGABYTE) + 50
463     self._resizeable = True
464     else:
465     parted_part = self._device._parted_disk.get_partition(int(self._orig_minor))
466 agaffney 301 parted_fs = parted_part.geom.file_system_open()
467 agaffney 826 resize_constraint = parted_fs.get_resize_constraint()
468     min_bytes = resize_constraint.min_size * self._device._sector_bytes
469     self._min_mb_for_resize = long(min_bytes / MEGABYTE) + 1
470     self._resizeable = True
471     except:
472     self._resizeable = False
473 agaffney 107
474 agaffney 509 ##
475 agaffney 514 # Returns whether or not the partition is extended
476 agaffney 107 def is_extended(self):
477     if self._type == "extended":
478     return True
479     else:
480     return False
481    
482 agaffney 509 ##
483 agaffney 514 # Returns whether or not the partition is logical
484 agaffney 107 def is_logical(self):
485 agaffney 492 if self._type == "free":
486 agaffney 639 if int(self._minor) + FREE_MINOR_FRAC_LOG == self._minor:
487 agaffney 492 return True
488     else:
489     return False
490 agaffney 497 elif archinfo[self._device._arch]['extended'] and self._minor > 4:
491 agaffney 107 return True
492 agaffney 492 else:
493     return False
494 agaffney 107
495 agaffney 509 ##
496 agaffney 514 # Returns a list of logical partitions if this is an extended partition
497 agaffney 107 def get_logicals(self):
498 agaffney 184 if not self.is_extended():
499     return None
500 agaffney 107 logicals = []
501 agaffney 184 parts = self._device._partitions.keys()
502     parts.sort()
503     for part in parts:
504     if part < 5: continue
505 agaffney 107 logicals.append(part)
506     logicals.sort()
507     return logicals
508    
509 agaffney 509 ##
510 agaffney 514 # Returns the extened parent partition if this is a logical partition (no longer used)
511 agaffney 107 def get_extended_parent(self):
512 agaffney 184 if not self.is_logical():
513     return None
514     else:
515     return self._device.get_partition_at(self._start, ignore_extended=0)
516 agaffney 107
517 agaffney 509 ##
518 agaffney 631 # Sets the options passed to mkfs
519     # @param mkfsopts Options passed to mkfs
520     def set_mkfsopts(self, mkfsopts):
521     self._mkfsopts = mkfsopts
522    
523     ##
524     # Returns the options passes to mkfs
525     def get_mkfsopts(self):
526     return self._mkfsopts
527    
528     ##
529 agaffney 514 # Sets the start sector for the partition
530     # @param start Start sector
531 agaffney 107 def set_start(self, start):
532 agaffney 635 self._start = long(start)
533 agaffney 107
534 agaffney 509 ##
535 agaffney 514 # Returns the start sector for the partition
536 agaffney 107 def get_start(self):
537 agaffney 635 return long(self._start)
538 agaffney 107
539 agaffney 509 ##
540 agaffney 514 # Sets the end sector of the partition
541     # @param end End sector
542 agaffney 107 def set_end(self, end):
543 agaffney 635 self._end = long(end)
544 agaffney 107
545 agaffney 509 ##
546 agaffney 514 # Returns end sector for the partition
547 agaffney 107 def get_end(self):
548 agaffney 635 return long(self._end)
549 agaffney 107
550 agaffney 509 ##
551 agaffney 514 # Returns size of partition in MB
552 agaffney 492 def get_mb(self):
553 agaffney 635 return long(self._mb)
554 agaffney 492
555 agaffney 509 ##
556 agaffney 514 # Sets size of partition in MB
557 agaffney 509 # @param mb Parameter description
558 agaffney 494 def set_mb(self, mb):
559 agaffney 635 self._mb = long(mb)
560 agaffney 494
561 agaffney 509 ##
562 agaffney 514 # Sets type of partition
563 agaffney 509 # @param type Parameter description
564 agaffney 107 def set_type(self, type):
565     self._type = type
566    
567 agaffney 509 ##
568 agaffney 514 # Returns type of partition
569 agaffney 107 def get_type(self):
570     return self._type
571    
572 agaffney 509 ##
573 agaffney 514 # Returns parent GLIStorageDevice object
574 agaffney 107 def get_device(self):
575     return self._device
576    
577 agaffney 509 ##
578 agaffney 514 # Sets minor of partition
579     # @param minor New minor
580 agaffney 107 def set_minor(self, minor):
581 agaffney 492 self._minor = float(minor)
582 agaffney 107
583 agaffney 509 ##
584 agaffney 514 # Returns minor of partition
585 agaffney 107 def get_minor(self):
586 agaffney 492 return float(self._minor)
587 agaffney 107
588 agaffney 509 ##
589 agaffney 514 # Sets the original minor of the partition
590 agaffney 509 # @param orig_minor Parameter description
591 agaffney 386 def set_orig_minor(self, orig_minor):
592     self._orig_minor = int(orig_minor)
593    
594 agaffney 509 ##
595 agaffney 514 # Returns the original minor of the partition
596 agaffney 386 def get_orig_minor(self):
597     return self._orig_minor
598    
599 agaffney 509 ##
600 agaffney 514 # Sets the mountpoint for the partition
601     # @param mountpoint Mountpoint
602 agaffney 107 def set_mountpoint(self, mountpoint):
603     self._mountpoint = mountpoint
604    
605 agaffney 509 ##
606 agaffney 514 # Returns the mountpoint for the partition
607 agaffney 107 def get_mountpoint(self):
608     return self._mountpoint
609    
610 agaffney 509 ##
611 agaffney 514 # Sets the mount options for the partition
612     # @param mountopts Mount options
613 agaffney 107 def set_mountopts(self, mountopts):
614     self._mountopts = mountopts
615    
616 agaffney 509 ##
617 agaffney 514 # Returns the mount options for the partition
618 agaffney 107 def get_mountopts(self):
619     return self._mountopts
620    
621 agaffney 509 ##
622 agaffney 514 # Set whether to format the partition
623 agaffney 523 # @param format Format this partition (True/False)
624 agaffney 107 def set_format(self, format):
625     self._format = format
626    
627 agaffney 509 ##
628 agaffney 514 # Returns whether to format the partition
629 agaffney 107 def get_format(self):
630     return self._format
631    
632 agaffney 509 ##
633 agaffney 523 # Returns whether the partition is resizeable
634     def is_resizeable(self):
635     return self._resizeable
636    
637     ##
638     # Returns minimum MB for resize
639     def get_min_mb_for_resize(self):
640     # if self.is_extended():
641     # min_size = self._start
642     # for part in self._device._partitions:
643     # if part < 5: continue
644     # if part.get_end > min_size: min_size = part.get_end()
645     # return min_size
646     # else:
647     if self._resizeable:
648     return self._min_mb_for_resize
649 agaffney 107 else:
650 agaffney 523 return -1
651 agaffney 107
652 agaffney 509 ##
653 agaffney 523 # Returns maximum MB for resize
654     def get_max_mb_for_resize(self):
655 agaffney 544 if self._resizeable:
656     free_minor = 0
657     if self.is_logical():
658 agaffney 639 free_minor = self._minor + FREE_MINOR_FRAC_LOG
659 agaffney 544 else:
660 agaffney 639 free_minor = self._minor + FREE_MINOR_FRAC_PRI
661 agaffney 544 if free_minor in self._device._partitions:
662     return self._mb + self._device._partitions[free_minor]._mb
663     else:
664     return self._mb
665 agaffney 523 else:
666 agaffney 544 return -1
667 agaffney 107
668 agaffney 509 ##
669 agaffney 544 # Resizes the partition
670     # @param mb New size in MB
671     def resize(self, mb):
672     free_minor = self._minor
673 agaffney 107 if self.is_logical():
674 agaffney 639 free_minor += FREE_MINOR_FRAC_LOG
675 agaffney 544 else:
676 agaffney 639 free_minor += FREE_MINOR_FRAC_PRI
677 agaffney 544 if mb < self._mb:
678     # Shrinking
679     if not free_minor in self._device._partitions:
680     self._device._partitions[free_minor] = Partition(self._device, free_minor, 0, 0, 0, "free", format=False, existing=False)
681     self._device._partitions[free_minor]._mb += self._mb - mb
682     self._mb = mb
683     elif mb == self._mb + self._device._partitions[free_minor]._mb:
684     # Using all available unallocated space
685     del self._device._partitions[free_minor]
686     self._mb = mb
687     elif mb > self._mb:
688     # Growing
689     self._device._partitions[free_minor]._mb = mb - self._mb
690     self._mb = mb
691 agaffney 107
692 agaffney 514 ##
693     # Returns a list of detected partitionable devices
694 agaffney 107 def detect_devices():
695     devices = []
696    
697     # Make sure sysfs exists
698 robbat2 687 # TODO: rewrite for 2.4 support
699 agaffney 107 if not os.path.exists("/sys/bus"):
700 agaffney 556 raise GLIException("GLIStorageDeviceError", 'fatal', 'detect_devices', "no sysfs found (you MUST use a kernel >2.6)")
701 agaffney 107 # Make sure /proc/partitions exists
702     if not os.path.exists("/proc/partitions"):
703 agaffney 556 raise GLIException("GLIStorageDeviceError", 'fatal', 'detect_devices', "/proc/partitions does not exist! Please make sure procfs is in your kernel and mounted!")
704 agaffney 107
705     # Load /proc/partitions into the variable 'partitions'
706     partitions = []
707     for line in open("/proc/partitions"):
708 agaffney 556 if len(line.split()) < 4 or not line.split()[0].isdigit() or not line.split()[1].isdigit():
709 agaffney 107 continue
710    
711     # Get the major, minor and device name
712     major = line.split()[0]
713     minor = line.split()[1]
714     device = "/dev/" + line.split()[3]
715    
716     if not major.isdigit() or not minor.isdigit():
717     continue
718    
719     major = int(major)
720     minor = int(minor)
721    
722     # If there is no /dev/'device_name', then scan
723     # all the devices in /dev to try and find a
724     # devices with the same major and minor
725     if not os.path.exists(device):
726     device = None
727     for path, dirs, files in os.walk("/dev"):
728 agaffney 535 for d_file in files:
729     full_file = os.path.join(path, d_file)
730 agaffney 107 if not os.path.exists(full_file):
731     continue
732     statres = os.stat(full_file)
733     fmaj = os.major(statres.st_rdev)
734     fmin = os.minor(statres.st_rdev)
735     if fmaj == major and fmin == minor:
736     device = full_file
737     break
738     if not device:
739     continue
740    
741     partitions.append(( major, minor, device ))
742    
743     # Scan sysfs for the devices of type 'x'
744     # 'x' being a member of the list below:
745 robbat2 687 # TODO: rewrite for 2.4 support
746 agaffney 107 for dev_type in [ "ide", "scsi" ]: # Other device types? usb? fw?
747     if os.path.exists("/sys/bus/" + dev_type):
748     sysfs_devices = os.listdir("/sys/bus/"+dev_type+"/devices")
749    
750     # For each device in the devices on that bus
751     for sysfs_device in sysfs_devices:
752 agaffney 556 dev_file = "/sys/bus/" + dev_type + "/devices/" + sysfs_device + "/block/dev"
753 agaffney 107
754     # If the file is not a block device, loop
755     if not os.path.exists(dev_file):
756     continue
757    
758     # Get the major and minor info
759     try:
760     major, minor = open(dev_file).read().split(":")
761     major = int(major)
762     minor = int(minor)
763     except:
764 agaffney 556 raise GLIException("GLIStorageDeviceError", 'fatal', 'detect_devices', "invalid major minor in " + dev_file)
765 agaffney 107
766     # Find a device listed in /proc/partitions
767     # that has the same minor and major as our
768     # current block device.
769     for record in partitions:
770     if major == record[0] and minor == record[1]:
771     devices.append(record[2])
772 agaffney 595
773     # For testing the partitioning code
774     if GLIUtility.is_file("/tmp/disk.img"):
775     devices.append("/tmp/disk.img")
776    
777 agaffney 107 # We have assembled the list of devices, so return it
778     return devices

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