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Commit | Line | Data |
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1 | Changes Prior to this release | |
2 | - Support "--grow --add" to add a device to a linear array, if the | |
3 | kernel supports it. Not documented yet. | |
4 | - Restore support for uclibc which was broken recently. | |
5 | - Several improvements to the output of --detail, including | |
6 | reporting "resyncing" or "recovering" in the state. | |
7 | - Close filedescriptor at end of --detail (exit would have closed it | |
8 | anyway, so this isn't abig deal). | |
9 | - Report "Sync checkpoint" in --examine output if appropriate. | |
10 | - Add --update=resync for --assemble mode to for a resync when the | |
11 | array is assembled. | |
12 | - Add support for "raid10", which is under development in 2.6. | |
13 | Not documented yet. | |
14 | - --monitor now reads spare-group and spares info from config file | |
15 | even when names of arrays to scan are given on the command line | |
16 | ||
17 | Changes Prior to 1.6.0 release | |
18 | - Device name given in -Eb is determined by examining /dev rather | |
19 | than assuming /dev/md%d | |
20 | - Fix bug in --monitor where an array could be held open an so | |
21 | could not be stopped without killing mdadm. | |
22 | - Add --grow mode. Currently only --size and --raid-disks can be | |
23 | changed. Both require kernel support which, at the time of | |
24 | writing, is not in a release kernel yet. | |
25 | - Don't print out "errors" or "no-errors" in -D and -E, as the bit | |
26 | is never set or used. | |
27 | - Use md event notification in 2.6.??? to make --monitor mode | |
28 | respond instantly to events. | |
29 | - Add --auto= option and auto= configfile entry to tell mdadm to | |
30 | create device files as needed. This is particularly useful | |
31 | with partitioned arrays where the major device number can change. | |
32 | - When generating --brief listing, if the standard name doesn't | |
33 | exist, search /dev for one rather than using a temp name. | |
34 | - Allow --build to build raid1 and multipath arrays. | |
35 | - Add "--assume-clean" for Create and Build, particularly for raid1 | |
36 | Note: this is dangerous. Only use it if you are certain. | |
37 | - Fix bug so that Rebuild status monitoring works again. | |
38 | - Add "degraded" and "recovering" options to the "Status:" | |
39 | entry for --detail | |
40 | ||
41 | Changes Prior to 1.5.0 release | |
42 | - new commands "mdassemble" which is a stripped-down equivalent of | |
43 | "mdadm -As", that can be compiled with dietlibc. | |
44 | Thanks to Luca Berra <bluca@comedia.it>. | |
45 | It can be using in an initramfs or initrd. | |
46 | - Fix compiling error with BLKGETSIZE64 and some signed/unsigned | |
47 | comparison warnings. | |
48 | - Add Rebuild Status (% complete) to --detail output. | |
49 | - Support "--monitor --test" which will generate a test alert | |
50 | for each array once, to test notification paths. | |
51 | - Generate RebuildFinished event when rebuild finishes. | |
52 | - Support for raid6 as found in 2.6.2 - thanks to | |
53 | H. Peter Anvin <hpa@zytor.com> | |
54 | - Support partitioned md arrays with a different major number and | |
55 | naming scheme (md_dX in /proc/mdstat, /dev/md/dXpY in /dev). | |
56 | ||
57 | Changes Prior to 1.4.0 release | |
58 | - Document fact that creating a raid5 array really creates a | |
59 | degraded array with a spare. | |
60 | - Add "spares=" tag to config file and generate it wit --detail and | |
61 | --examine | |
62 | - Add "SparesMissing" event when --monitor first sees an array and | |
63 | it doesn't have the enough spare devices. | |
64 | - Add --update=summaries for --assemble to update summary | |
65 | information in superblock, and correct other inconsistancies in | |
66 | the superblock. | |
67 | - Add --test option to --detail to set a meaningful exit status. | |
68 | ||
69 | Changes Prior to 1.3.0 release | |
70 | - Make 'size' and unsigned long in Create to allow creation of | |
71 | larger arrays. | |
72 | - Explicitly flag spare devices as 'spare' in --detail and --examine | |
73 | output. Previously they simply had no flags lists. | |
74 | - Make MailCmd (for monitor) configurable in Makefile, and default | |
75 | to "/usr/sbin/sendmail -t". Also split out the warning related | |
76 | flags into CWFLAGS for easier build configurability. | |
77 | - Minor bugfix in Manage code. | |
78 | - --monitor now notices and reports degraded arrays at startup using | |
79 | "DegradedArray" event, and also has a --oneshot option to only | |
80 | report DegradedArrays, and then exit. | |
81 | - Small man-page clarification w.r.t. raid levels and raid4 in | |
82 | particular. | |
83 | - Disallow creation of arrays with only one device as this is | |
84 | probably a mistake. --force will override this check. | |
85 | - Correct some misleading documentation in the "mdadm --create --help" | |
86 | message. | |
87 | - Ignore chunksize if raid1 or multipath. | |
88 | - Explicit statement in man page that raid-disks cannot be changed | |
89 | after array is created. | |
90 | - Improve message when attempting to start an array with | |
91 | insufficient devices. Instead of required the array to be full, | |
92 | we only require it has as many active devices as last time. | |
93 | ||
94 | Changes Prior to 1.2.0 release | |
95 | - Fix bug where --daemonise required an argument. | |
96 | - In --assemble --verbose, print appropriate message if device is | |
97 | not in devices= list | |
98 | - Updated mdadm.conf.5 to reflect fact that device= takes wildcards | |
99 | - Typos: componenet -> component | |
100 | - Reduce size of "--help" message put excess into "--help-options" | |
101 | - Fix bug introduced when MD_SB_DISKS dependancy removed, and which | |
102 | caused spares not be assembled properly. | |
103 | - Print appropriate message if --monitor --scan decides not to | |
104 | monitor anything. | |
105 | Changes Prior to 1.1.0 release | |
106 | - add --deamonise flag for --monitor - forks and prints pid to stdout | |
107 | - Fix bug so we REALLY clear dirty flag with -Af | |
108 | - -Db now prints a 'devices=' word for each array. | |
109 | - "mdadm -A /dev/md0" will get info from configfile, even without scan | |
110 | - When assembling multipath arrays, ignore devices which are flagged | |
111 | as having errors. | |
112 | - take --super-minor=dev to mean "use the minor number of the mddev | |
113 | being assembled. | |
114 | - take --config=none to mean "completely ignore config file" | |
115 | - Make --monitor require --scan or a device list. | |
116 | Changes Prior to 1.0.9 release | |
117 | - Documentation updates including kernel parameters documented | |
118 | in md.4 | |
119 | - --assemble --force for raid4/5 will mark clean, needed for 2.5 | |
120 | - --detail prints out the events counter as well | |
121 | - flush device before reading superblock to be sure to get | |
122 | current data | |
123 | - added mdadm.static target to makefile for static linking | |
124 | - --monitor was ignoring /dev/md0 due to off-by-one error | |
125 | - Fix assorted typos | |
126 | - Fix printing of Gibibytes - calc was wrong. | |
127 | - Fix printing of Array Size in --detail when very big. | |
128 | - --monitor no longer tries to work for raid0 or linear as these | |
129 | have nothing to be monitored. | |
130 | - The word 'partitions' on a DEVICE line will cause all partitions | |
131 | listed in /proc/partitions to be considered | |
132 | - If the config file is called 'partitions' then it will be treated | |
133 | as though it contained exactly 'device partitions' so e.g. | |
134 | mdadm -Ebsc partitions | |
135 | will find all raid partitions easily. | |
136 | - successfully assemble multipath devices by ignoring raid_disk | |
137 | value from superblock (it is always the same). | |
138 | - --assemble not tied to MD_SB_DISKS limit quite so much | |
139 | - Support compiling with tcc | |
140 | - Support compiling with uclibc - just skip scan of /dev | |
141 | - Add --update= option for Assemble mode. Either sparc2.2 | |
142 | or super-minor updates are possible. See mdadm.8 | |
143 | ||
144 | Changes Prior to 1.0.1 release | |
145 | - Round off MB/GiB etc values instead of round down. | |
146 | - Add --sparc2.2 option to examine to shift superblock around | |
147 | and --sparc2.2update to rewrite the superblock | |
148 | - Fix assorted typos in online help | |
149 | ||
150 | Changes Prior to 1.0.0 release | |
151 | - Allow --config with Misc mode (for --examine --scan) | |
152 | - Add $(CXFLAGS) to end of CFLAGS in makefile | |
153 | - When making an N disk raid5 array, the Nth drive | |
154 | is moved to the end of the array as a spare rather than | |
155 | being shifted up one place. This means that when the | |
156 | kernel builds onto the last spare and inserts it, | |
157 | the devices will be in the expected order. | |
158 | - Man page improvements | |
159 | Changes Prior to 0.8.2 release | |
160 | - Correct spelling of persist[ae]nce/persist[ae]nt. | |
161 | - Change "disk" to "device" in options and config file | |
162 | - convert array size to "long long" *before* shift-left in -D and -Q | |
163 | ||
164 | Changes Prior to 0.8.1 release | |
165 | - Add "INSTALL" file. | |
166 | - Fix some "i" variables that were not being set properly | |
167 | - Initialise minsize and maxsize so that compilers don't complain. | |
168 | - Tidy up Makefile and mdadm.spec installations | |
169 | - Add "multipath" to documentation of valid levels | |
170 | ||
171 | Changes Prior to 0.8 release | |
172 | - Fix another bug in Assemble.c due to confusing 'i' with 'j' | |
173 | - Minimal, untested, support for multipath | |
174 | - re-write of argument parsing to have more coherent modes, | |
175 | - add --query,-Q option | |
176 | - Update mdadm.8 to reflect arg processing change and --query | |
177 | - Change "long" to "unsigned long" for device sizes | |
178 | - Handle "mailaddr" and "program" lines in config file for follow/scan mode. | |
179 | - --follow --scan will exit if no program or mail found | |
180 | - Add MAILADDR and PROGRAM to mdadm.conf-example | |
181 | - Spell check man pages | |
182 | - consistently use "component devices" instead of "subdevices" | |
183 | - Make -Wall -Werror really work and fix lots of errors. | |
184 | - --detail and --stop can have --scan which chooses devices from /proc/mdstat | |
185 | - --monitor detects 20% changes in resync, failed spares, | |
186 | disappearing arrays, | |
187 | - --monitor --scan will automatically add any devices found in /proc/mdstat | |
188 | - --monitor will move spares between arrays with same spare-group if necessary | |
189 | - Documentation for Monitor Mode | |
190 | - --query notes if the array containing the given device is active or not | |
191 | - Finished md.4 man page. | |
192 | ||
193 | Changes Prior to 0.7.2 release | |
194 | - mdadm.spec updates and ifdef BLKGETSIZE64 from Luca Berra -- bluca@comedia.it | |
195 | - more mdadm.spec updates from Gregory Leblanc <gleblanc@linuxweasel.com> | |
196 | - make directory for mdadm.conf configurable in Makefile | |
197 | - Finished mdadm.conf.5. Removed details of conf file from | |
198 | mdadm.8 leaving a reference to mdadm.conf.5. | |
199 | - Fix bug in Assemble.c, thanks to Junaid Rizvi <domdev@sat.net.pk> | |
200 | - Get --assemble --force to make sure old major/minor numbers are | |
201 | consistant, as md.c worries about this :-( | |
202 | ||
203 | ||
204 | Changes Prior to 0.7.1 release | |
205 | - update mdadm.spec | |
206 | - use BLKGETSIZE64 if available for array size | |
207 | - give human readable as GiB/MiB and GB and MB, with 2 decimal point precision | |
208 | - Only warn about size variation for raid1/4/5. | |
209 | - Started md.4 man page | |
210 | - Started mdadm.conf.5 man page | |
211 | ||
212 | Changes Prior to 0.7 release | |
213 | ||
214 | - Fix makefile to install binary at /sbin and not /sbin/sbin | |
215 | Also install man page. | |
216 | - Add --zero-superblock based on --destroywithextremeprejudice | |
217 | from Dale Stephenson <steph@snapserver.com> | |
218 | - change name to mdadm. It is palandromic, and much nicer to pronouce. | |
219 | ||
220 | Changes Prior to 0.6 release | |
221 | ||
222 | - Remove the limit on the number of device names that can be | |
223 | given on the command line. | |
224 | - Fix bug in --assemble --force where it would only update a | |
225 | single superblock. | |
226 | - Fix bogus printing of big numbers not being block devices | |
227 | when given names of devices that don't exist. | |
228 | - When --assemble --force, consider superblocks with an event | |
229 | count that is 1 behind as out-of-date. Normally they are | |
230 | considered up-to-date (as the kernel assumes this too). | |
231 | - When marking drives as not-failed in the superblock, | |
232 | we also mark them as ACTIVE and SYNC. | |
233 | - Don't start arrays for which not all drives are available unless: | |
234 | --scan which implies that all drives were found automatically | |
235 | --run which means the user knows what they want | |
236 | --force which means that we are fixing something broken | |
237 | - Make sure all device numbers passed as 3rd arg of ioctl | |
238 | are passed as unsigned lock, so that it works on SPARC | |
239 | - If HOT_ADD_DISK failes for -a, then only try ADD_NEW_DISK | |
240 | if we cannot read from the array, i.e. if the array is | |
241 | not started yet. | |
242 | - man page update | |
243 | - Taught Examine to handle --scan. It examines all devices listed | |
244 | on DEVICE lines in the config file. | |
245 | - Added --brief (-b) flag for Examine and Detail to print out | |
246 | and mdctl.conf compatible description with uuid=, level=, | |
247 | disks= and - for Examine - devices= | |
248 | --examine --brief collects all devices the make the one array and | |
249 | list them as one entry. | |
250 | - Added level= and disks= options to ARRAY lines in config files | |
251 | so --brief output could be used as-is. | |
252 | - Make parity style ({left,right}-{,a}symmetric) consistantly use -, | |
253 | never _. | |
254 | - Add "Array Size" to --detail output | |
255 | - Change "Size" to "Device Size" and exclude from Detail of arrays | |
256 | that do not have a consistent device size. | |
257 | - Add Human readable MiB or GiB value on size lines of Detail and Examine | |
258 | - --assemble --scan doesn't complain about active drives | |
259 | - require number of spares given in -x to be listed. | |
260 | - Made --build actually work. | |
261 | Changes Prior to 0.5 release | |
262 | ||
263 | --assemble: | |
264 | spare drives are handled properly. | |
265 | ||
266 | --force can be used to recover from 2-drive failures on RAID5 | |
267 | If you belive that /dev/hda1 /dev/hdb1 /dev/hdc1 /dev/hdd1 should | |
268 | make a raid5 array, but it has experienced multiple failures and | |
269 | wont start, then | |
270 | ||
271 | mdctl --assemble --force /dev/md0 /dev/hd[abcd]1 | |
272 | ||
273 | Should update the superblock on the newest failed drive and | |
274 | restart the array in degraded mode. You should then remove the | |
275 | remaining failed drive and re-add it (if you are happy that it | |
276 | might work). | |
277 | ||
278 | Ofcourse whenever you have a 2-drive failure, you have a risk | |
279 | of corruption in data that hasn't be changed for a long time. So | |
280 | this doesn't give you your array back all nice and happy, but it | |
281 | does allow you to recover data that might not be corrupt. | |
282 | ||
283 | More flexibility in identifying a RAID array in the mdctl.conf | |
284 | e.g. | |
285 | array /dev/md4 super-minor=4 | |
286 | ||
287 | assembles /dev/md4 from all devices found that have a raid | |
288 | superblock that says the minor number of the array is 4. | |
289 | If the blocks with the right minor number do not all have the | |
290 | same UUID, an error is flags and no assembly happens. | |
291 | ||
292 | array /dev/md3 devices=/dev/hd[abc]2 | |
293 | ||
294 | Assembles /dev/md3 drom /dev/hda2 /dev/hdb2 and/dev/hdc2. All | |
295 | devices must exist and have raid superblock with the same uuid. | |
296 | ||
297 | If two identity specifiers are used, only devices that match all | |
298 | of them are considered, so | |
299 | ||
300 | array /dev/md2 devices=/dev/hd?2 super-minor=2 | |
301 | ||
302 | will assemble /dev/md2 using all /dev/hd?2 devices which have a | |
303 | raid superblock with minor number 2. | |
304 | ||
305 | --create: | |
306 | When listing devices for --create, the word "missing" can be | |
307 | used to indicate that the respective slot does not have a | |
308 | working drive currently. This is similar to the "failed-disk" | |
309 | directive in mkraid/raidtab. | |
310 | e.g. | |
311 | mdctl --create --level=5 -raid-disks=4 --spare-disks=2 | |
312 | /dev/md0 /dev/sda /dev/sdb missing /dev/sdc /dev/sdd /dev/sde | |
313 | ||
314 | will create a raid5 array with the third slot empty, and two | |
315 | spares. | |
316 | ||
317 | By default, raid5 arrays are created with the last slot empty | |
318 | and drive listed for the last slot added as a spare. If a | |
319 | "missing" slot is given, or if --force is given, then --create | |
320 | does exactly what you ask and doesn't try to be clever. | |
321 | ||
322 | ||
323 | --follow / --monitor: | |
324 | ||
325 | This is a new mode. I couldn't stop my self from picking a name | |
326 | starting with F (as current modes start A,B,C,D,E) but I | |
327 | relented and provided an alternate name that is somewhat more | |
328 | meaningful. | |
329 | ||
330 | In this mode, mdctl does not exit, but runs continuously and | |
331 | periodically polls all the md devices to see if they have had | |
332 | any interested state change. | |
333 | The changes that it currently notices are: | |
334 | Fail - an active disc fails | |
335 | FailSpare - a spare, that was presumably being build, fails | |
336 | ActiveSpare - a spare becomes active, presumably after a rebuild. | |
337 | ||
338 | Options: | |
339 | --mail mailaddress - send Email on any Fail* event | |
340 | --program program - run the program on any event. | |
341 | Args are: eventname mddevice subdevice(if-known) | |
342 | --delay seconds - change from the default 60second pause | |
343 | between polls. | |
344 | ||
345 | I plan to add functionality to this mode to allow sharing of | |
346 | spare drives. If an array is marks "spare-group=fred", and it | |
347 | has a failed drive and no spares, and if some other array is | |
348 | also "spare-group=fred" and it has no failed drives, but does | |
349 | have a spare drive that is big enough, the spare will be moved | |
350 | to the first array. | |
351 | ||
352 | I also have the idea of adding a --grow mode which will re-organise | |
353 | the data on an N disk raid0/4/5 array to be on an N+M disk array. | |
354 | I have no concrete plans for this though. | |
355 | ||
356 | I got rid of the "v" in the archive file name, and include the | |
357 | version number in the directory created by the archive. | |
358 | ||
359 | There is now a man page and mdctl.spec (for rpm) thanks to | |
360 | Danilo Godec <danci@agenda.si>. | |
361 | ||
362 | Ofcourse, the man page is now out of date and despite being based on | |
363 | the --help output, is not wholy correct. After I get --follow | |
364 | working properly, I plan to revise the various documentation and/or | |
365 | the code to make sure the two match. |