3 # Copyright (c) 2003 Intel Corporation
6 # Copyright (c) 2004-2006 The Trustees of Princeton University
8 # expected /proc/partitions format
15 from Exceptions import *
17 import notify_messages
23 Make sure the hardware we are running on is sufficient for
24 the PlanetLab OS to be installed on. In the process, identify
25 the list of block devices that may be used for a node installation,
26 and identify the cdrom device that we booted off of.
28 Return 1 if requiremenst met, 0 if requirements not met. Raise
29 BootManagerException if any problems occur that prevent the requirements
32 Expect the following variables from the store:
34 MINIMUM_MEMORY minimum amount of memory in kb required
36 NODE_ID the node_id from the database for this node
37 MINIMUM_DISK_SIZE any disks smaller than this size, in GB, are not used
38 TOTAL_MINIMUM_DISK_SIZE total disk size in GB, if all usable disks
39 meet this number, there isn't enough disk space for
40 this node to be usable after install
41 SKIP_HARDWARE_REQUIREMENT_CHECK
42 If set, don't check if minimum requirements are met
43 Sets the following variables:
44 INSTALL_BLOCK_DEVICES list of block devices to install onto
47 log.write( "\n\nStep: Checking if hardware requirements met.\n" )
50 MINIMUM_MEMORY= int(vars["MINIMUM_MEMORY"])
51 if MINIMUM_MEMORY == "":
52 raise ValueError, "MINIMUM_MEMORY"
54 NODE_ID= vars["NODE_ID"]
56 raise ValueError("NODE_ID")
58 MINIMUM_DISK_SIZE= int(vars["MINIMUM_DISK_SIZE"])
60 # use vs_ or lxc_variants
61 varname=vars['virt']+"_TOTAL_MINIMUM_DISK_SIZE"
62 TOTAL_MINIMUM_DISK_SIZE= int(vars[varname])
64 SKIP_HARDWARE_REQUIREMENT_CHECK= \
65 int(vars["SKIP_HARDWARE_REQUIREMENT_CHECK"])
68 raise BootManagerException, \
69 "Missing variable in install store: %s" % var
70 except ValueError, var:
71 raise BootManagerException, \
72 "Variable in install store blank, shouldn't be: %s" % var
74 # lets see if we have enough memory to run
75 log.write( "Checking for available memory.\n" )
77 total_mem= systeminfo.get_total_phsyical_mem(vars, log)
79 raise BootManagerException, "Unable to read total physical memory"
81 if total_mem < MINIMUM_MEMORY:
82 if not SKIP_HARDWARE_REQUIREMENT_CHECK:
83 log.write( "Insufficient memory to run node: %s kb\n" % total_mem )
84 log.write( "Required memory: %s kb\n" % MINIMUM_MEMORY )
92 sent= BootAPI.call_api_function( vars, "BootNotifyOwners",
93 (notify_messages.MSG_INSUFFICIENT_MEMORY,
97 except BootManagerException, e:
98 log.write( "Call to BootNotifyOwners failed: %s.\n" % e )
101 log.write( "Unable to notify site contacts of problem.\n" )
103 log.write( "Notified contacts of problem.\n" )
107 log.write( "Memory requirements not met, but running anyway: %s kb\n"
110 log.write( "Looks like we have enough memory: %s kb\n" % total_mem )
114 # get a list of block devices to attempt to install on
115 # (may include cdrom devices)
116 install_devices= systeminfo.get_block_device_list(vars, log)
118 # save the list of block devices in the log
119 log.write( "Detected block devices:\n" )
120 log.write( repr(install_devices) + "\n" )
122 if not install_devices or len(install_devices) == 0:
123 log.write( "No block devices detected.\n" )
131 sent= BootAPI.call_api_function( vars, "BootNotifyOwners",
132 (notify_messages.MSG_INSUFFICIENT_DISK,
136 except BootManagerException, e:
137 log.write( "Call to BootNotifyOwners failed: %s.\n" % e )
140 log.write( "Unable to notify site contacts of problem.\n" )
144 # now, lets remove any block devices we know won't work (readonly,cdroms),
145 # or could be other writable removable disks (usb keychains, zip disks, etc)
146 # i'm not aware of anything that helps with the latter test, so,
147 # what we'll probably do is simply not use any block device below
148 # some size threshold (set in installstore)
150 # also, keep track of the total size for all devices that appear usable
153 for device in install_devices.keys():
155 (major,minor,blocks,gb_size,readonly)= install_devices[device]
157 # if the device string starts with
158 # planetlab or dm- (device mapper), ignore it (could be old lvm setup)
159 if device[:14] == "/dev/planetlab" or device[:8] == "/dev/dm-":
160 del install_devices[device]
163 if gb_size < MINIMUM_DISK_SIZE:
164 log.write( "Device is too small to use: %s \n(appears" \
165 " to be %4.2f GB)\n" % (device,gb_size) )
167 del install_devices[device]
173 log.write( "Device is readonly, not using: %s\n" % device )
175 del install_devices[device]
180 # add this sector count to the total count of usable
181 # sectors we've found.
182 total_size= total_size + gb_size
185 if len(install_devices) == 0:
186 log.write( "No suitable block devices found for install.\n" )
194 sent= BootAPI.call_api_function( vars, "BootNotifyOwners",
195 (notify_messages.MSG_INSUFFICIENT_DISK,
199 except BootManagerException, e:
200 log.write( "Call to BootNotifyOwners failed: %s.\n" % e )
203 log.write( "Unable to notify site contacts of problem.\n" )
208 # show the devices we found that are usable
209 log.write( "Usable block devices:\n" )
210 log.write( repr(install_devices.keys()) + "\n" )
212 # save the list of devices for the following steps
213 vars["INSTALL_BLOCK_DEVICES"]= install_devices.keys()
216 # ensure the total disk size is large enough. if
217 # not, we need to email the tech contacts the problem, and
218 # put the node into debug mode.
219 if total_size < TOTAL_MINIMUM_DISK_SIZE:
220 if not SKIP_HARDWARE_REQUIREMENT_CHECK:
221 log.write( "The total usable disk size of all disks is " \
222 "insufficient to be usable as a PlanetLab node.\n" )
229 sent= BootAPI.call_api_function( vars, "BootNotifyOwners",
230 (notify_messages.MSG_INSUFFICIENT_DISK,
234 except BootManagerException, e:
235 log.write( "Call to BootNotifyOwners failed: %s.\n" % e )
238 log.write( "Unable to notify site contacts of problem.\n" )
243 log.write( "The total usable disk size of all disks is " \
244 "insufficient, but running anyway.\n" )
246 log.write( "Total size for all usable block devices: %4.2f GB\n" % total_size )