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Commit | Line | Data |
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bd526cee NB |
1 | Changes Prior to this release |
2 | - Round off MB/GiB etc values instead of round down. | |
3 | - Add --sparc2.2 option to examine to shift superblock around | |
4 | and --sparc2.2update to rewrite the superblock | |
5 | ||
6 | Changes Prior to 1.0.0 release | |
2d465520 NB |
7 | - Allow --config with Misc mode (for --examine --scan) |
8 | - Add $(CXFLAGS) to end of CFLAGS in makefile | |
9 | - When making an N disk raid5 array, the Nth drive | |
10 | is moved to the end of the array as a spare rather than | |
11 | being shifted up one place. This means that when the | |
12 | kernel builds onto the last spare and inserts it, | |
13 | the devices will be in the expected order. | |
14 | - Man page improvements | |
15 | Changes Prior to 0.8.2 release | |
b83d95f3 NB |
16 | - Correct spelling of persist[ae]nce/persist[ae]nt. |
17 | - Change "disk" to "device" in options and config file | |
18 | - convert array size to "long long" *before* shift-left in -D and -Q | |
19 | ||
20 | Changes Prior to 0.8.1 release | |
c913b90e NB |
21 | - Add "INSTALL" file. |
22 | - Fix some "i" variables that were not being set properly | |
23 | - Initialise minsize and maxsize so that compilers don't complain. | |
24 | - Tidy up Makefile and mdadm.spec installations | |
25 | - Add "multipath" to documentation of valid levels | |
26 | ||
27 | Changes Prior to 0.8 release | |
e0d19036 NB |
28 | - Fix another bug in Assemble.c due to confusing 'i' with 'j' |
29 | - Minimal, untested, support for multipath | |
30 | - re-write of argument parsing to have more coherent modes, | |
31 | - add --query,-Q option | |
32 | - Update mdadm.8 to reflect arg processing change and --query | |
33 | - Change "long" to "unsigned long" for device sizes | |
34 | - Handle "mailaddr" and "program" lines in config file for follow/scan mode. | |
35 | - --follow --scan will exit if no program or mail found | |
36 | - Add MAILADDR and PROGRAM to mdadm.conf-example | |
37 | - Spell check man pages | |
38 | - consistently use "component devices" instead of "subdevices" | |
39 | - Make -Wall -Werror really work and fix lots of errors. | |
40 | - --detail and --stop can have --scan which chooses devices from /proc/mdstat | |
41 | - --monitor detects 20% changes in resync, failed spares, | |
42 | disappearing arrays, | |
43 | - --monitor --scan will automatically add any devices found in /proc/mdstat | |
44 | - --monitor will move spares between arrays with same spare-group if necessary | |
45 | - Documentation for Monitor Mode | |
46 | - --query notes if the array containing the given device is active or not | |
47 | - Finished md.4 man page. | |
48 | ||
49 | Changes Prior to 0.7.2 release | |
11a3e71d NB |
50 | - mdadm.spec updates and ifdef BLKGETSIZE64 from Luca Berra -- bluca@comedia.it |
51 | - more mdadm.spec updates from Gregory Leblanc <gleblanc@linuxweasel.com> | |
52 | - make directory for mdadm.conf configurable in Makefile | |
53 | - Finished mdadm.conf.5. Removed details of conf file from | |
54 | mdadm.8 leaving a reference to mdadm.conf.5. | |
55 | - Fix bug in Assemble.c, thanks to Junaid Rizvi <domdev@sat.net.pk> | |
56 | - Get --assemble --force to make sure old major/minor numbers are | |
57 | consistant, as md.c worries about this :-( | |
58 | ||
59 | ||
60 | Changes Prior to 0.7.1 release | |
56eb10c0 NB |
61 | - update mdadm.spec |
62 | - use BLKGETSIZE64 if available for array size | |
63 | - give human readable as GiB/MiB and GB and MB, with 2 decimal point precision | |
64 | - Only warn about size variation for raid1/4/5. | |
65 | - Started md.4 man page | |
66 | - Started mdadm.conf.5 man page | |
67 | ||
9a9dab36 NB |
68 | Changes Prior to 0.7 release |
69 | ||
70 | - Fix makefile to install binary at /sbin and not /sbin/sbin | |
71 | Also install man page. | |
72 | - Add --zero-superblock based on --destroywithextremeprejudice | |
73 | from Dale Stephenson <steph@snapserver.com> | |
74 | - change name to mdadm. It is palandromic, and much nicer to pronouce. | |
75 | ||
cd29a5c8 NB |
76 | Changes Prior to 0.6 release |
77 | ||
9a9dab36 | 78 | - Remove the limit on the number of device names that can be |
cd29a5c8 NB |
79 | given on the command line. |
80 | - Fix bug in --assemble --force where it would only update a | |
81 | single superblock. | |
82 | - Fix bogus printing of big numbers not being block devices | |
83 | when given names of devices that don't exist. | |
84 | - When --assemble --force, consider superblocks with an event | |
85 | count that is 1 behind as out-of-date. Normally they are | |
86 | considered up-to-date (as the kernel assumes this too). | |
87 | - When marking drives as not-failed in the superblock, | |
88 | we also mark them as ACTIVE and SYNC. | |
89 | - Don't start arrays for which not all drives are available unless: | |
90 | --scan which implies that all drives were found automatically | |
91 | --run which means the user knows what they want | |
92 | --force which means that we are fixing something broken | |
93 | - Make sure all device numbers passed as 3rd arg of ioctl | |
94 | are passed as unsigned lock, so that it works on SPARC | |
95 | - If HOT_ADD_DISK failes for -a, then only try ADD_NEW_DISK | |
96 | if we cannot read from the array, i.e. if the array is | |
97 | not started yet. | |
98 | - man page update | |
99 | - Taught Examine to handle --scan. It examines all devices listed | |
100 | on DEVICE lines in the config file. | |
101 | - Added --brief (-b) flag for Examine and Detail to print out | |
102 | and mdctl.conf compatible description with uuid=, level=, | |
103 | disks= and - for Examine - devices= | |
104 | --examine --brief collects all devices the make the one array and | |
105 | list them as one entry. | |
106 | - Added level= and disks= options to ARRAY lines in config files | |
107 | so --brief output could be used as-is. | |
108 | - Make parity style ({left,right}-{,a}symmetric) consistantly use -, | |
109 | never _. | |
110 | - Add "Array Size" to --detail output | |
111 | - Change "Size" to "Device Size" and exclude from Detail of arrays | |
112 | that do not have a consistent device size. | |
113 | - Add Human readable MiB or GiB value on size lines of Detail and Examine | |
114 | - --assemble --scan doesn't complain about active drives | |
115 | - require number of spares given in -x to be listed. | |
116 | - Made --build actually work. | |
117 | Changes Prior to 0.5 release | |
118 | ||
119 | --assemble: | |
120 | spare drives are handled properly. | |
121 | ||
122 | --force can be used to recover from 2-drive failures on RAID5 | |
123 | If you belive that /dev/hda1 /dev/hdb1 /dev/hdc1 /dev/hdd1 should | |
124 | make a raid5 array, but it has experienced multiple failures and | |
125 | wont start, then | |
126 | ||
127 | mdctl --assemble --force /dev/md0 /dev/hd[abcd]1 | |
128 | ||
129 | Should update the superblock on the newest failed drive and | |
130 | restart the array in degraded mode. You should then remove the | |
131 | remaining failed drive and re-add it (if you are happy that it | |
132 | might work). | |
133 | ||
134 | Ofcourse whenever you have a 2-drive failure, you have a risk | |
135 | of corruption in data that hasn't be changed for a long time. So | |
136 | this doesn't give you your array back all nice and happy, but it | |
137 | does allow you to recover data that might not be corrupt. | |
138 | ||
139 | More flexibility in identifying a RAID array in the mdctl.conf | |
140 | e.g. | |
141 | array /dev/md4 super-minor=4 | |
142 | ||
143 | assembles /dev/md4 from all devices found that have a raid | |
144 | superblock that says the minor number of the array is 4. | |
145 | If the blocks with the right minor number do not all have the | |
146 | same UUID, an error is flags and no assembly happens. | |
147 | ||
148 | array /dev/md3 devices=/dev/hd[abc]2 | |
149 | ||
150 | Assembles /dev/md3 drom /dev/hda2 /dev/hdb2 and/dev/hdc2. All | |
151 | devices must exist and have raid superblock with the same uuid. | |
152 | ||
153 | If two identity specifiers are used, only devices that match all | |
154 | of them are considered, so | |
155 | ||
156 | array /dev/md2 devices=/dev/hd?2 super-minor=2 | |
157 | ||
158 | will assemble /dev/md2 using all /dev/hd?2 devices which have a | |
159 | raid superblock with minor number 2. | |
160 | ||
161 | --create: | |
162 | When listing devices for --create, the word "missing" can be | |
163 | used to indicate that the respective slot does not have a | |
164 | working drive currently. This is similar to the "failed-disk" | |
165 | directive in mkraid/raidtab. | |
166 | e.g. | |
167 | mdctl --create --level=5 -raid-disks=4 --spare-disks=2 | |
168 | /dev/md0 /dev/sda /dev/sdb missing /dev/sdc /dev/sdd /dev/sde | |
169 | ||
170 | will create a raid5 array with the third slot empty, and two | |
171 | spares. | |
172 | ||
173 | By default, raid5 arrays are created with the last slot empty | |
174 | and drive listed for the last slot added as a spare. If a | |
175 | "missing" slot is given, or if --force is given, then --create | |
176 | does exactly what you ask and doesn't try to be clever. | |
177 | ||
178 | ||
179 | --follow / --monitor: | |
180 | ||
181 | This is a new mode. I couldn't stop my self from picking a name | |
182 | starting with F (as current modes start A,B,C,D,E) but I | |
183 | relented and provided an alternate name that is somewhat more | |
184 | meaningful. | |
185 | ||
186 | In this mode, mdctl does not exit, but runs continuously and | |
187 | periodically polls all the md devices to see if they have had | |
188 | any interested state change. | |
189 | The changes that it currently notices are: | |
190 | Fail - an active disc fails | |
191 | FailSpare - a spare, that was presumably being build, fails | |
192 | ActiveSpare - a spare becomes active, presumably after a rebuild. | |
193 | ||
194 | Options: | |
195 | --mail mailaddress - send Email on any Fail* event | |
196 | --program program - run the program on any event. | |
197 | Args are: eventname mddevice subdevice(if-known) | |
198 | --delay seconds - change from the default 60second pause | |
199 | between polls. | |
200 | ||
201 | I plan to add functionality to this mode to allow sharing of | |
202 | spare drives. If an array is marks "spare-group=fred", and it | |
203 | has a failed drive and no spares, and if some other array is | |
204 | also "spare-group=fred" and it has no failed drives, but does | |
205 | have a spare drive that is big enough, the spare will be moved | |
206 | to the first array. | |
207 | ||
208 | I also have the idea of adding a --grow mode which will re-organise | |
209 | the data on an N disk raid0/4/5 array to be on an N+M disk array. | |
210 | I have no concrete plans for this though. | |
211 | ||
212 | I got rid of the "v" in the archive file name, and include the | |
213 | version number in the directory created by the archive. | |
214 | ||
215 | There is now a man page and mdctl.spec (for rpm) thanks to | |
216 | Danilo Godec <danci@agenda.si>. | |
217 | ||
218 | Ofcourse, the man page is now out of date and despite being based on | |
219 | the --help output, is not wholy correct. After I get --follow | |
220 | working properly, I plan to revise the various documentation and/or | |
221 | the code to make sure the two match. | |
222 |