1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
#!/usr/bin/python2
#remove_storage.py removes disks that were added using add_storage.py
#
#Only disks that have a conf file in /etc/storage.d/ are presented
#as choices to remove.
import os,sys,commands
import ConfigParser
from ConfigParser import SafeConfigParser
import glob
from socket import gethostname
from MythTV import MythDB
storage_dir = "/etc/storage.d"
def runcmd(cmd):
if True :
pass
else:
cmd = "echo "+cmd
#print cmd
cmdout = commands.getstatusoutput(cmd)
#logging.debug(" %s", cmdout)
return cmdout
def read_fstab():
f = open('/etc/fstab', 'r')
fstab=f.readlines()
f.close()
return fstab
def unmount_disk(conf):
if os.path.ismount(conf[1]):
print "Unmounting " + conf[1] + "."
cmd = "umount %s" %conf[1]
runcmd(cmd)
def remove_fstab_entry(conf):
fstab=read_fstab()
f = open('/etc/fstab', 'w')
for line in fstab:
if not line.startswith("#"):
if line.find(conf[1]) > -1 and line.find(conf[2]) > -1 :
print "Removing " + conf[1] + " from fstab."
else:
f.write(line)
else:
f.write(line)
f.close()
def remove_SG_entries(conf):
DB = MythDB()
host=gethostname()
with DB as c:
print "Removing " + conf[1] + " storage group\n paths from MythTV database."
c.execute("""delete from storagegroup where hostname = %s and dirname like %s""", (host,conf[1] + '%'))
c.execute("""delete from settings where hostname = %s and value like %s""", (host,'SGweightPerDir:' + host + ':' + conf[1] + '%'))
def remove_disk_link(conf):
if os.path.islink("/data/storage/disk" + str(conf[0])):
print "Removing link /data/storage/disk%s." %(conf[0])
cmd = "rm -f /data/storage/disk%s" %(conf[0])
runcmd(cmd)
def remove_disk_mount(conf):
print "Removing mountpoint %s." %(conf[1])
cmd = "rm -rf %s" %(conf[1])
runcmd(cmd)
def update_conf_file(conf):
print "Updating %s file\n and running systemconfig." %(conf[4])
parser = SafeConfigParser()
parser.read(conf[4])
parser.set('storage','shareable',"False")
parser.set('storage','removed',"True")
with open(conf[4], 'wb') as conf[4]:
parser.write(conf[4])
cmd = "systemconfig.py -m fileshare"
runcmd(cmd)
def usage():
help='''
remove_storage.py removes disks that were added using add_storage.py.
Only disks that have a conf file in /etc/storage.d/ are presented
as choices to remove.
Disks removed from the system are not erased or formatted.
Normal operations include (in this order):
Ask which disk to remove
Unmount the disk if mounted
Remove disk from /etc/fstab
Remove MythTV storage group paths in MythTV database
Remove disk# symlink at /data/storage/
Remove disk name mountpoint at /data/storage/
Make shareable = False in /etc/storage.d/DISKNAME.conf
Add removed = True in /etc/stoarge.d/DISKNAME.conf
Run systemconfig.py -m fileshare to update File Shares
Options:
-h, --help: Show this help message.
'''
print help
sys.exit(0)
#--------------------------------------------
def main():
all_confs = []
# get conf files that are not disk0 or not removed
for conf_file in glob.glob('%s/*.conf' %storage_dir):
this_conf = []
parser = SafeConfigParser()
parser.read(conf_file)
mounted = ""
disk_num = parser.get('storage', 'disk_num')
try:
removed = parser.get('storage', 'removed')
except:
removed = False
if disk_num == "0" or removed:
continue
this_conf.append(int(disk_num)) #0
this_conf.append(parser.get('storage', 'mountpoint')) #1
this_conf.append(parser.get('storage', 'uuid')) #2
if os.path.ismount(this_conf[1]):
this_conf.append("(mounted)") #3
else:
this_conf.append("") #3
this_conf.append(conf_file) #4
all_confs.append(this_conf)
# sort confs on disk num
all_confs.sort(key=lambda x: x[0])
# exit if no disks found
if len(all_confs) == 0:
print "\nThere are no disks to remove. Exiting."
sys.exit(0)
print "\nDisks found in /etc/storage.d/:\n"
# print list of disks to remove
for i,conf in enumerate(all_confs):
print str(i+1) + ": " + conf[1] + " (disk" + str(conf[0]) + ") " + conf[3]
# get user input of disk to remove
try:
conf_select=raw_input("\nEnter the number of the disk to remove: ")
conf_select=int(conf_select)
if conf_select > len(all_confs) or conf_select < 1:
conf_select=int("e")
except ValueError:
print "You must enter a number between 1 and " + str(len(all_confs)) + ". Exiting."
sys.exit(0)
selected_conf = all_confs[conf_select-1]
# confirm selection
confirm_select=raw_input("\nDisk " + selected_conf[1] + " (disk" + str(selected_conf[0]) + ") will be removed.\nAre you sure you want to remove it (yes/no)? ")
if confirm_select != "yes":
print "Exiting."
sys.exit(0)
print ""
unmount_disk(selected_conf)
remove_fstab_entry(selected_conf)
remove_SG_entries(selected_conf)
remove_disk_link(selected_conf)
remove_disk_mount(selected_conf)
update_conf_file(selected_conf)
print "\nDisk " + selected_conf[1] + " has been removed."
if __name__ == "__main__":
if not os.geteuid()==0:
sys.exit("\nRoot access is required to run this program.\n")
if "--help" in sys.argv or "-h" in sys.argv:
usage()
else:
main()
|
