]>
Commit | Line | Data |
---|---|---|
4948b8f7 NB |
1 | Changes Prior to this release |
2 | - Support 'mailfrom' line in mdadm.conf so the From: line in alert | |
3 | emails can be explicitly set. | |
d1732eeb NB |
4 | - Arrange that SparesMissing (which is similar in import to |
5 | DegradedArray) generates an Email. | |
a99d6b66 | 6 | - Assume "DEVICE partitions" if no DEVICE line is given. |
b578481c | 7 | - Support new 'offset' layout for raid10. |
1bfdbe01 NB |
8 | - When creating a bitmap file, choose a chunksize to limit number |
9 | of bitmap chunks to 2 million. More than this can cause kmalloc | |
10 | failure. | |
5bbb4842 NB |
11 | - New 'CREATE' line in mdadm.conf for defaults such as owner, group, |
12 | mode and auto-flag | |
120230a4 NB |
13 | - --detail checks if array has been started or not and includes that |
14 | in report. | |
4948b8f7 | 15 | |
ac957baa NB |
16 | Changes Prior to 2.4.1 release |
17 | - Honour --write-mostly when adding to an array without persistent | |
18 | superblocks. | |
19 | - Fix alignment problem in version-1 superblocks. | |
20 | NOTE: This is an incompatable change affecting raid5 reshape. | |
21 | If you want to reshape a raid5 using version-1 superblocks, | |
22 | use 2.6.17-rc2 or later, and mdadm-2.4.1 or later. | |
23 | ||
2efedc7b NB |
24 | Changes Prior to 2.4 release |
25 | - Rewrite 'reshape' support including performing a backup | |
26 | of the critical region for a raid5 growth, and restoring that | |
27 | backup after a crash. | |
28 | - Put a 'canary' at each end of the backup so a corruption | |
29 | can be more easily detected. | |
31317663 | 30 | - Remove useless 'ident' arguement from ->getinfo_super method. |
d7514c58 NB |
31 | - Support --backup-file for backing-up critical section during |
32 | growth. | |
33 | - Erase old superblocks (of different versions) when creating new | |
34 | array. | |
35 | - Allow --monitor to work with arrays with >28 devices | |
36 | - Report reshape information in --detail | |
37 | - Handle symlinks in /dev better | |
38 | - Fix mess in --detail output which a device is missing. | |
2ae555c3 | 39 | - Manpage tidyup |
7ef02d01 NB |
40 | - Support 'bitmap=' in mdadm.conf for auto-assembling arrays with |
41 | write-intent bitmaps in separate files. | |
addc80c4 | 42 | - Updates to md.4 man page including section on RESTRIPING and SYSFS |
2efedc7b | 43 | |
1e0d770c NB |
44 | Changes Prior to 2.3.1 release |
45 | - Fixed -O2 compile so I could make and RPM. | |
46 | - Type cast number to be printed %llu so it compiles on 64bit | |
47 | machines. (Thanks Luca). | |
48 | - Stop using asm/byteorder.h - to make Redhat happy :-( | |
49 | - Require bitmap files to have a '/' in their name. | |
50 | - Error-check a few syscalls - code from SuSE package. | |
51 | ||
52 | Changes Prior to 2.3 release | |
ce4fafd6 NB |
53 | - Try /etc/mdadm/mdadm.conf if /etc/mdadm.conf doesn't exist. |
54 | This provided compatability for Debian. | |
a92f6acc NB |
55 | - Fixed for version-1 superblock: |
56 | report chunksize for raid6 and raid10 | |
57 | make sure device size used is a multiple of chunksize | |
58 | - Fix "--assemble --scan" crash. | |
59 | - Fix completely failure to create array on ppc64 | |
60 | - Fix memcmp in place of memcpy | |
61 | - A few minor improvements to online help | |
62 | - Clean up usage of 'long long' for used-size of devices, so | |
63 | that it is possible to create a raid1 of 7TB devices! | |
64 | - Make internal bitmaps work on 7TB raid1 arrays. | |
65 | - Provide error message if --examine doesn't find any superblock. | |
66 | - Report 'reshape' status in --examine - this depends on kernel | |
67 | patches that are not yet finalised. | |
68 | - Report bitmap status in --detail and --examine | |
69 | - Default to v1 superblocks instead of v0.90 if the array | |
70 | is too big for 0.90 to handle. | |
71 | - Sort the output of "mdadm --detail --scan" so that it is | |
72 | in a suitable order for assembling arrays. i.e. components come | |
73 | before an array that they are part of. | |
74 | - Print size of large reiserfs array properly went warning of | |
75 | possible confilcts. | |
ce4fafd6 | 76 | |
f3c7fda6 | 77 | Changes Prior to 2.2 release |
f9c25f1d NB |
78 | - Assorted bug fixes |
79 | - Support write-intent-bitmaps on raid10 | |
80 | - Support little-endian (Rather than hostendian) bitmaps. | |
81 | - Return correct error code from 'mdadm -S' | |
d9d4e469 | 82 | - Remove extra blank line from 'mdadm -Eb' output. |
c06487ce NB |
83 | - Improve option parsing so that -a and -b do not have |
84 | optional arguements: the arg is either required or not | |
85 | depending on context. | |
8b0dabea NB |
86 | - Allow scanning of devices listed in /proc/partitions even |
87 | if they don't appear in /dev. | |
47d79ef8 | 88 | - Support --assume-clean in --create mode as well as --build |
773135f5 NB |
89 | - Add support for --monitor to report to syslog: -y or --syslog. |
90 | Thanks to Ross Vandegrift | |
fe394e5e NB |
91 | - --monitor now reports which device failed in a 'Fail' message |
92 | This broke with 2.6 | |
ee04451c NB |
93 | - Improve chance of array starting properly after a crash. |
94 | mdadm was insisting the event numbers were identical, but this | |
95 | isn't needed, and is a problem if the crash was while the metadata | |
96 | was being updated. | |
7d99579f | 97 | - Support --update==uuid |
0ff1a185 NB |
98 | - Added README.initramfs and mkinitramfs to help people use an |
99 | initram for starting md arrays at boot. | |
f9c25f1d NB |
100 | |
101 | Changes Prior to 2.1 release | |
265e0f17 NB |
102 | - Fix assembling of raid10 array when devices are missing. |
103 | mdadm now correctly detects if a array is workable or not | |
104 | depending on which devices are present, and so will correctly | |
105 | handle "--assemble --force" if multiple devices have failed. | |
106 | - Report raid10 layout in --examine output. | |
308e1801 NB |
107 | - Fix assembling of arrays that use the version-1 superblock and |
108 | have spares. Previously the spares would be ignored. | |
109 | - Fix bug so that multiple drives can be re-added at once. | |
f6d75de8 NB |
110 | - Fix problem with hot-adding a bitmap to version-1-superblock |
111 | arrays. | |
265e0f17 NB |
112 | |
113 | Changes Prior to 2.0 | |
586ed405 NB |
114 | - Support assembling from byte-swapped superblocks |
115 | metadata type "0.swap" and --update=byteorder | |
dfd4d8ee | 116 | - write-mostly and write-behind support for raid1. |
947fd4dd NB |
117 | - Support --name= and 'name=' config entry for identifying |
118 | arrays be name. | |
a9d69660 NB |
119 | - RAID10 in man pages. |
120 | - Lot of minor manpage updates | |
586ed405 | 121 | |
f277ce36 NB |
122 | Changes Prior to 2.0-devel-3 release |
123 | - Assorted fixes for multiple bugs... | |
5e7519fa | 124 | - Add test suite |
f277ce36 NB |
125 | |
126 | Changes Prior to 1.12.0 release | |
60f91664 | 127 | Several of these are backported from the Debian package |
0bbc98b5 | 128 | - Don't use 'lstat' to check for blockdevices, use stat. |
779043ef | 129 | - Document --size=max option for --grow |
b8f72a62 | 130 | - Document SparesMissing event and DeviceDisappeared/WrongLevel |
91f068bf NB |
131 | - --stop --scan repeatly cycles until no more progress can be made |
132 | so that stack devices are stopped properly | |
3fa06e9d | 133 | - Minor type rationalisation for ident->uuid - now always 'int[]' |
891d2994 | 134 | - Fix type in online help for --grow (was -F, now -G) |
1337546d NB |
135 | - Allow --auto command line option to set default auto= |
136 | value when running "--assemble --scan". Previously | |
137 | --auto was ignored if --scan was given | |
a46f4061 | 138 | - Fix a few type casts |
5a6d1148 | 139 | - Fix parsing of /dev/md/N in is_standard |
d5d3721e | 140 | - Fix rounding errors in human_size() |
60f91664 | 141 | - Fix silly example in mdadm.conf-examples |
b79713f8 | 142 | - When finding a /dev name for a device, prefer shorter names |
22892d56 NB |
143 | - Suppress listing of devices= in --brief output of -D or -E, |
144 | unless -v is given (-vv gives the old behaviour with -Dsv). | |
145 | This is because the device list can change and so is not a | |
146 | stable aspect of the array | |
bd72c2b2 | 147 | - Allow --force with --grow so '-Gfn1' works (on raid1) |
8f23b0b3 | 148 | - Replace sprintf calls with snprintf (to quiet diet-libc) |
ccf44f32 | 149 | - Add man page for mdassemble |
fe6729fa | 150 | - Fix compilation with tinyc |
0bbc98b5 | 151 | |
e5811618 | 152 | Changes Prior to 1.11.0 release |
0fbf459d NB |
153 | - Fix embarassing bug which causes --add to always fail. |
154 | ||
d7eaf49f NB |
155 | Changes Prior to 1.10.0 release |
156 | - Fix bug with --config=partitions | |
157 | - Open sub-devices with O_EXCL to detect if already in use | |
b2b46bfc NB |
158 | - Make sure superblock updates are flushed directly to disk. |
159 | ||
f277ce36 | 160 | Changes Prior to 2.0-devel-1 release |
e793c2e5 NB |
161 | - Support for version-1 superblock. See --metadata option. |
162 | - Support for bitmap based intent logging. | |
163 | - Minor fixes. | |
164 | ||
9a4e08d2 NB |
165 | Changes Prior to 1.9.0 release |
166 | - Fix rpm build problem (stray %) | |
19f8b8fc | 167 | - Minor manpage updates |
182661f4 | 168 | - Change "dirty" status to "active" as it was confusing people. |
8d80900b NB |
169 | - --assemble --auto recognises 'standard' name and insists on using |
170 | the appropriate major/minor number for them. | |
171 | - Remove underscore from partition names, so partitions of | |
172 | "foo" are "foo1", "foo2" etc (unchanged) and partitions of | |
173 | "f00" are "f00p1", "f00p2" etc rather than "f00_p1"... | |
0df46c2a NB |
174 | - Use "major", "minor", "makedev" macros instead of |
175 | "MAJOR", "MINOR", "MKDEV" so that large device numbers work | |
176 | on 2.6 (providing you have glibc 2.3.3 or later). | |
43fc1676 | 177 | - Add some missing closes of open file descriptors. |
057bd352 NB |
178 | - Reread /proc/partition for every array assembled when using |
179 | it to find devices, rather than only once. | |
d17c1f8c NB |
180 | - Make "mdadm -Ss" stop stacked devices properly, by reversing the |
181 | order in which arrays are stopped. | |
e6b64cd0 | 182 | - Improve some error messages. |
0320ea45 NB |
183 | - Allow device name to appear before first option, so e.g. |
184 | mdadm /dev/md0 -A /dev/sd[ab] | |
185 | works. | |
186 | - Assume '-Q' if just a device is given, rather than being silent. | |
a3fd117c NB |
187 | - Change "dirty" status to "active" as it was confusing people. |
188 | ||
b5e64645 NB |
189 | Changes Prior to 1.8.0 release |
190 | - Makefile cleanup from Luca Berra <bluca@comedia.it> | |
191 | - --pid-file (-i) to set a pid file to use with --monitor --daemonise | |
192 | - Fix typo in mdadm man page | |
193 | - Fix coredump when "-s" used with no config file present. | |
194 | - Support new "faulty" personality which can inject synthetic | |
195 | faults. (Not in kernel.org yet at 1Nov2004) | |
196 | - Support raid0/linear on devices > 2 Terabytes | |
197 | - Make sure raid6 resyncs when created with one missing device | |
198 | ||
199 | Changes Prior to 1.7.0 release | |
e5329c37 NB |
200 | - Support "--grow --add" to add a device to a linear array, if the |
201 | kernel supports it. Not documented yet. | |
202 | - Restore support for uclibc which was broken recently. | |
203 | - Several improvements to the output of --detail, including | |
204 | reporting "resyncing" or "recovering" in the state. | |
205 | - Close filedescriptor at end of --detail (exit would have closed it | |
206 | anyway, so this isn't abig deal). | |
207 | - Report "Sync checkpoint" in --examine output if appropriate. | |
208 | - Add --update=resync for --assemble mode to for a resync when the | |
209 | array is assembled. | |
210 | - Add support for "raid10", which is under development in 2.6. | |
211 | Not documented yet. | |
212 | - --monitor now reads spare-group and spares info from config file | |
213 | even when names of arrays to scan are given on the command line | |
214 | ||
dd0781e5 NB |
215 | Changes Prior to 1.6.0 release |
216 | - Device name given in -Eb is determined by examining /dev rather | |
217 | than assuming /dev/md%d | |
218 | - Fix bug in --monitor where an array could be held open an so | |
219 | could not be stopped without killing mdadm. | |
220 | - Add --grow mode. Currently only --size and --raid-disks can be | |
221 | changed. Both require kernel support which, at the time of | |
222 | writing, is not in a release kernel yet. | |
223 | - Don't print out "errors" or "no-errors" in -D and -E, as the bit | |
224 | is never set or used. | |
225 | - Use md event notification in 2.6.??? to make --monitor mode | |
226 | respond instantly to events. | |
227 | - Add --auto= option and auto= configfile entry to tell mdadm to | |
228 | create device files as needed. This is particularly useful | |
229 | with partitioned arrays where the major device number can change. | |
230 | - When generating --brief listing, if the standard name doesn't | |
231 | exist, search /dev for one rather than using a temp name. | |
232 | - Allow --build to build raid1 and multipath arrays. | |
233 | - Add "--assume-clean" for Create and Build, particularly for raid1 | |
234 | Note: this is dangerous. Only use it if you are certain. | |
235 | - Fix bug so that Rebuild status monitoring works again. | |
236 | - Add "degraded" and "recovering" options to the "Status:" | |
237 | entry for --detail | |
238 | ||
239 | Changes Prior to 1.5.0 release | |
98c6faba NB |
240 | - new commands "mdassemble" which is a stripped-down equivalent of |
241 | "mdadm -As", that can be compiled with dietlibc. | |
242 | Thanks to Luca Berra <bluca@comedia.it>. | |
243 | It can be using in an initramfs or initrd. | |
244 | - Fix compiling error with BLKGETSIZE64 and some signed/unsigned | |
245 | comparison warnings. | |
246 | - Add Rebuild Status (% complete) to --detail output. | |
247 | - Support "--monitor --test" which will generate a test alert | |
248 | for each array once, to test notification paths. | |
249 | - Generate RebuildFinished event when rebuild finishes. | |
250 | - Support for raid6 as found in 2.6.2 - thanks to | |
251 | H. Peter Anvin <hpa@zytor.com> | |
252 | - Support partitioned md arrays with a different major number and | |
253 | naming scheme (md_dX in /proc/mdstat, /dev/md/dXpY in /dev). | |
254 | ||
feb716e9 NB |
255 | Changes Prior to 1.4.0 release |
256 | - Document fact that creating a raid5 array really creates a | |
257 | degraded array with a spare. | |
258 | - Add "spares=" tag to config file and generate it wit --detail and | |
259 | --examine | |
260 | - Add "SparesMissing" event when --monitor first sees an array and | |
261 | it doesn't have the enough spare devices. | |
262 | - Add --update=summaries for --assemble to update summary | |
263 | information in superblock, and correct other inconsistancies in | |
264 | the superblock. | |
265 | - Add --test option to --detail to set a meaningful exit status. | |
266 | ||
aa88f531 NB |
267 | Changes Prior to 1.3.0 release |
268 | - Make 'size' and unsigned long in Create to allow creation of | |
269 | larger arrays. | |
270 | - Explicitly flag spare devices as 'spare' in --detail and --examine | |
271 | output. Previously they simply had no flags lists. | |
272 | - Make MailCmd (for monitor) configurable in Makefile, and default | |
273 | to "/usr/sbin/sendmail -t". Also split out the warning related | |
274 | flags into CWFLAGS for easier build configurability. | |
275 | - Minor bugfix in Manage code. | |
276 | - --monitor now notices and reports degraded arrays at startup using | |
277 | "DegradedArray" event, and also has a --oneshot option to only | |
278 | report DegradedArrays, and then exit. | |
279 | - Small man-page clarification w.r.t. raid levels and raid4 in | |
280 | particular. | |
281 | - Disallow creation of arrays with only one device as this is | |
282 | probably a mistake. --force will override this check. | |
283 | - Correct some misleading documentation in the "mdadm --create --help" | |
284 | message. | |
285 | - Ignore chunksize if raid1 or multipath. | |
286 | - Explicit statement in man page that raid-disks cannot be changed | |
287 | after array is created. | |
288 | - Improve message when attempting to start an array with | |
289 | insufficient devices. Instead of required the array to be full, | |
290 | we only require it has as many active devices as last time. | |
291 | ||
56eedc1a NB |
292 | Changes Prior to 1.2.0 release |
293 | - Fix bug where --daemonise required an argument. | |
294 | - In --assemble --verbose, print appropriate message if device is | |
295 | not in devices= list | |
296 | - Updated mdadm.conf.5 to reflect fact that device= takes wildcards | |
297 | - Typos: componenet -> component | |
298 | - Reduce size of "--help" message put excess into "--help-options" | |
299 | - Fix bug introduced when MD_SB_DISKS dependancy removed, and which | |
300 | caused spares not be assembled properly. | |
301 | - Print appropriate message if --monitor --scan decides not to | |
302 | monitor anything. | |
d013a55e NB |
303 | Changes Prior to 1.1.0 release |
304 | - add --deamonise flag for --monitor - forks and prints pid to stdout | |
305 | - Fix bug so we REALLY clear dirty flag with -Af | |
306 | - -Db now prints a 'devices=' word for each array. | |
307 | - "mdadm -A /dev/md0" will get info from configfile, even without scan | |
308 | - When assembling multipath arrays, ignore devices which are flagged | |
309 | as having errors. | |
310 | - take --super-minor=dev to mean "use the minor number of the mddev | |
311 | being assembled. | |
312 | - take --config=none to mean "completely ignore config file" | |
313 | - Make --monitor require --scan or a device list. | |
5787fa49 NB |
314 | Changes Prior to 1.0.9 release |
315 | - Documentation updates including kernel parameters documented | |
316 | in md.4 | |
317 | - --assemble --force for raid4/5 will mark clean, needed for 2.5 | |
318 | - --detail prints out the events counter as well | |
319 | - flush device before reading superblock to be sure to get | |
320 | current data | |
321 | - added mdadm.static target to makefile for static linking | |
322 | - --monitor was ignoring /dev/md0 due to off-by-one error | |
323 | - Fix assorted typos | |
324 | - Fix printing of Gibibytes - calc was wrong. | |
325 | - Fix printing of Array Size in --detail when very big. | |
326 | - --monitor no longer tries to work for raid0 or linear as these | |
d013a55e | 327 | have nothing to be monitored. |
5787fa49 NB |
328 | - The word 'partitions' on a DEVICE line will cause all partitions |
329 | listed in /proc/partitions to be considered | |
330 | - If the config file is called 'partitions' then it will be treated | |
331 | as though it contained exactly 'device partitions' so e.g. | |
332 | mdadm -Ebsc partitions | |
d013a55e | 333 | will find all raid partitions easily. |
5787fa49 NB |
334 | - successfully assemble multipath devices by ignoring raid_disk |
335 | value from superblock (it is always the same). | |
336 | - --assemble not tied to MD_SB_DISKS limit quite so much | |
337 | - Support compiling with tcc | |
338 | - Support compiling with uclibc - just skip scan of /dev | |
339 | - Add --update= option for Assemble mode. Either sparc2.2 | |
340 | or super-minor updates are possible. See mdadm.8 | |
341 | ||
342 | Changes Prior to 1.0.1 release | |
bd526cee NB |
343 | - Round off MB/GiB etc values instead of round down. |
344 | - Add --sparc2.2 option to examine to shift superblock around | |
345 | and --sparc2.2update to rewrite the superblock | |
5787fa49 | 346 | - Fix assorted typos in online help |
bd526cee NB |
347 | |
348 | Changes Prior to 1.0.0 release | |
2d465520 NB |
349 | - Allow --config with Misc mode (for --examine --scan) |
350 | - Add $(CXFLAGS) to end of CFLAGS in makefile | |
351 | - When making an N disk raid5 array, the Nth drive | |
352 | is moved to the end of the array as a spare rather than | |
353 | being shifted up one place. This means that when the | |
354 | kernel builds onto the last spare and inserts it, | |
355 | the devices will be in the expected order. | |
356 | - Man page improvements | |
357 | Changes Prior to 0.8.2 release | |
b83d95f3 NB |
358 | - Correct spelling of persist[ae]nce/persist[ae]nt. |
359 | - Change "disk" to "device" in options and config file | |
360 | - convert array size to "long long" *before* shift-left in -D and -Q | |
361 | ||
362 | Changes Prior to 0.8.1 release | |
c913b90e NB |
363 | - Add "INSTALL" file. |
364 | - Fix some "i" variables that were not being set properly | |
365 | - Initialise minsize and maxsize so that compilers don't complain. | |
366 | - Tidy up Makefile and mdadm.spec installations | |
367 | - Add "multipath" to documentation of valid levels | |
368 | ||
369 | Changes Prior to 0.8 release | |
e0d19036 NB |
370 | - Fix another bug in Assemble.c due to confusing 'i' with 'j' |
371 | - Minimal, untested, support for multipath | |
372 | - re-write of argument parsing to have more coherent modes, | |
373 | - add --query,-Q option | |
374 | - Update mdadm.8 to reflect arg processing change and --query | |
375 | - Change "long" to "unsigned long" for device sizes | |
376 | - Handle "mailaddr" and "program" lines in config file for follow/scan mode. | |
377 | - --follow --scan will exit if no program or mail found | |
378 | - Add MAILADDR and PROGRAM to mdadm.conf-example | |
379 | - Spell check man pages | |
380 | - consistently use "component devices" instead of "subdevices" | |
381 | - Make -Wall -Werror really work and fix lots of errors. | |
382 | - --detail and --stop can have --scan which chooses devices from /proc/mdstat | |
383 | - --monitor detects 20% changes in resync, failed spares, | |
384 | disappearing arrays, | |
385 | - --monitor --scan will automatically add any devices found in /proc/mdstat | |
386 | - --monitor will move spares between arrays with same spare-group if necessary | |
387 | - Documentation for Monitor Mode | |
388 | - --query notes if the array containing the given device is active or not | |
389 | - Finished md.4 man page. | |
390 | ||
391 | Changes Prior to 0.7.2 release | |
11a3e71d NB |
392 | - mdadm.spec updates and ifdef BLKGETSIZE64 from Luca Berra -- bluca@comedia.it |
393 | - more mdadm.spec updates from Gregory Leblanc <gleblanc@linuxweasel.com> | |
394 | - make directory for mdadm.conf configurable in Makefile | |
395 | - Finished mdadm.conf.5. Removed details of conf file from | |
396 | mdadm.8 leaving a reference to mdadm.conf.5. | |
397 | - Fix bug in Assemble.c, thanks to Junaid Rizvi <domdev@sat.net.pk> | |
398 | - Get --assemble --force to make sure old major/minor numbers are | |
399 | consistant, as md.c worries about this :-( | |
400 | ||
401 | ||
402 | Changes Prior to 0.7.1 release | |
56eb10c0 NB |
403 | - update mdadm.spec |
404 | - use BLKGETSIZE64 if available for array size | |
405 | - give human readable as GiB/MiB and GB and MB, with 2 decimal point precision | |
406 | - Only warn about size variation for raid1/4/5. | |
407 | - Started md.4 man page | |
408 | - Started mdadm.conf.5 man page | |
409 | ||
9a9dab36 NB |
410 | Changes Prior to 0.7 release |
411 | ||
412 | - Fix makefile to install binary at /sbin and not /sbin/sbin | |
413 | Also install man page. | |
414 | - Add --zero-superblock based on --destroywithextremeprejudice | |
415 | from Dale Stephenson <steph@snapserver.com> | |
416 | - change name to mdadm. It is palandromic, and much nicer to pronouce. | |
417 | ||
cd29a5c8 NB |
418 | Changes Prior to 0.6 release |
419 | ||
9a9dab36 | 420 | - Remove the limit on the number of device names that can be |
cd29a5c8 NB |
421 | given on the command line. |
422 | - Fix bug in --assemble --force where it would only update a | |
423 | single superblock. | |
424 | - Fix bogus printing of big numbers not being block devices | |
425 | when given names of devices that don't exist. | |
426 | - When --assemble --force, consider superblocks with an event | |
427 | count that is 1 behind as out-of-date. Normally they are | |
428 | considered up-to-date (as the kernel assumes this too). | |
429 | - When marking drives as not-failed in the superblock, | |
430 | we also mark them as ACTIVE and SYNC. | |
431 | - Don't start arrays for which not all drives are available unless: | |
432 | --scan which implies that all drives were found automatically | |
433 | --run which means the user knows what they want | |
434 | --force which means that we are fixing something broken | |
435 | - Make sure all device numbers passed as 3rd arg of ioctl | |
436 | are passed as unsigned lock, so that it works on SPARC | |
437 | - If HOT_ADD_DISK failes for -a, then only try ADD_NEW_DISK | |
438 | if we cannot read from the array, i.e. if the array is | |
439 | not started yet. | |
440 | - man page update | |
441 | - Taught Examine to handle --scan. It examines all devices listed | |
442 | on DEVICE lines in the config file. | |
443 | - Added --brief (-b) flag for Examine and Detail to print out | |
444 | and mdctl.conf compatible description with uuid=, level=, | |
445 | disks= and - for Examine - devices= | |
446 | --examine --brief collects all devices the make the one array and | |
447 | list them as one entry. | |
448 | - Added level= and disks= options to ARRAY lines in config files | |
449 | so --brief output could be used as-is. | |
450 | - Make parity style ({left,right}-{,a}symmetric) consistantly use -, | |
451 | never _. | |
452 | - Add "Array Size" to --detail output | |
453 | - Change "Size" to "Device Size" and exclude from Detail of arrays | |
454 | that do not have a consistent device size. | |
455 | - Add Human readable MiB or GiB value on size lines of Detail and Examine | |
456 | - --assemble --scan doesn't complain about active drives | |
457 | - require number of spares given in -x to be listed. | |
458 | - Made --build actually work. | |
459 | Changes Prior to 0.5 release | |
460 | ||
461 | --assemble: | |
462 | spare drives are handled properly. | |
463 | ||
464 | --force can be used to recover from 2-drive failures on RAID5 | |
465 | If you belive that /dev/hda1 /dev/hdb1 /dev/hdc1 /dev/hdd1 should | |
466 | make a raid5 array, but it has experienced multiple failures and | |
467 | wont start, then | |
468 | ||
469 | mdctl --assemble --force /dev/md0 /dev/hd[abcd]1 | |
470 | ||
471 | Should update the superblock on the newest failed drive and | |
472 | restart the array in degraded mode. You should then remove the | |
473 | remaining failed drive and re-add it (if you are happy that it | |
474 | might work). | |
475 | ||
476 | Ofcourse whenever you have a 2-drive failure, you have a risk | |
477 | of corruption in data that hasn't be changed for a long time. So | |
478 | this doesn't give you your array back all nice and happy, but it | |
479 | does allow you to recover data that might not be corrupt. | |
480 | ||
481 | More flexibility in identifying a RAID array in the mdctl.conf | |
482 | e.g. | |
483 | array /dev/md4 super-minor=4 | |
484 | ||
485 | assembles /dev/md4 from all devices found that have a raid | |
486 | superblock that says the minor number of the array is 4. | |
487 | If the blocks with the right minor number do not all have the | |
488 | same UUID, an error is flags and no assembly happens. | |
489 | ||
490 | array /dev/md3 devices=/dev/hd[abc]2 | |
491 | ||
492 | Assembles /dev/md3 drom /dev/hda2 /dev/hdb2 and/dev/hdc2. All | |
493 | devices must exist and have raid superblock with the same uuid. | |
494 | ||
495 | If two identity specifiers are used, only devices that match all | |
496 | of them are considered, so | |
497 | ||
498 | array /dev/md2 devices=/dev/hd?2 super-minor=2 | |
499 | ||
500 | will assemble /dev/md2 using all /dev/hd?2 devices which have a | |
501 | raid superblock with minor number 2. | |
502 | ||
503 | --create: | |
504 | When listing devices for --create, the word "missing" can be | |
505 | used to indicate that the respective slot does not have a | |
506 | working drive currently. This is similar to the "failed-disk" | |
507 | directive in mkraid/raidtab. | |
508 | e.g. | |
509 | mdctl --create --level=5 -raid-disks=4 --spare-disks=2 | |
510 | /dev/md0 /dev/sda /dev/sdb missing /dev/sdc /dev/sdd /dev/sde | |
511 | ||
512 | will create a raid5 array with the third slot empty, and two | |
513 | spares. | |
514 | ||
515 | By default, raid5 arrays are created with the last slot empty | |
516 | and drive listed for the last slot added as a spare. If a | |
517 | "missing" slot is given, or if --force is given, then --create | |
518 | does exactly what you ask and doesn't try to be clever. | |
519 | ||
520 | ||
521 | --follow / --monitor: | |
522 | ||
523 | This is a new mode. I couldn't stop my self from picking a name | |
524 | starting with F (as current modes start A,B,C,D,E) but I | |
525 | relented and provided an alternate name that is somewhat more | |
526 | meaningful. | |
527 | ||
528 | In this mode, mdctl does not exit, but runs continuously and | |
529 | periodically polls all the md devices to see if they have had | |
530 | any interested state change. | |
531 | The changes that it currently notices are: | |
532 | Fail - an active disc fails | |
533 | FailSpare - a spare, that was presumably being build, fails | |
534 | ActiveSpare - a spare becomes active, presumably after a rebuild. | |
535 | ||
536 | Options: | |
537 | --mail mailaddress - send Email on any Fail* event | |
538 | --program program - run the program on any event. | |
539 | Args are: eventname mddevice subdevice(if-known) | |
540 | --delay seconds - change from the default 60second pause | |
541 | between polls. | |
542 | ||
543 | I plan to add functionality to this mode to allow sharing of | |
544 | spare drives. If an array is marks "spare-group=fred", and it | |
545 | has a failed drive and no spares, and if some other array is | |
546 | also "spare-group=fred" and it has no failed drives, but does | |
547 | have a spare drive that is big enough, the spare will be moved | |
548 | to the first array. | |
549 | ||
550 | I also have the idea of adding a --grow mode which will re-organise | |
551 | the data on an N disk raid0/4/5 array to be on an N+M disk array. | |
552 | I have no concrete plans for this though. | |
553 | ||
554 | I got rid of the "v" in the archive file name, and include the | |
555 | version number in the directory created by the archive. | |
556 | ||
557 | There is now a man page and mdctl.spec (for rpm) thanks to | |
558 | Danilo Godec <danci@agenda.si>. | |
559 | ||
560 | Ofcourse, the man page is now out of date and despite being based on | |
561 | the --help output, is not wholy correct. After I get --follow | |
562 | working properly, I plan to revise the various documentation and/or | |
563 | the code to make sure the two match. |