]>
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. | |
8131b493 NB |
15 | - When using --update=uuid on an array with a bitmap, update the |
16 | bitmap's uuid too. | |
008e1100 NB |
17 | - Add a copy of /proc/mdstat to the mail message send by mdadm |
18 | --monitor. | |
4948b8f7 | 19 | |
ac957baa NB |
20 | Changes Prior to 2.4.1 release |
21 | - Honour --write-mostly when adding to an array without persistent | |
22 | superblocks. | |
23 | - Fix alignment problem in version-1 superblocks. | |
24 | NOTE: This is an incompatable change affecting raid5 reshape. | |
25 | If you want to reshape a raid5 using version-1 superblocks, | |
26 | use 2.6.17-rc2 or later, and mdadm-2.4.1 or later. | |
27 | ||
2efedc7b NB |
28 | Changes Prior to 2.4 release |
29 | - Rewrite 'reshape' support including performing a backup | |
30 | of the critical region for a raid5 growth, and restoring that | |
31 | backup after a crash. | |
32 | - Put a 'canary' at each end of the backup so a corruption | |
33 | can be more easily detected. | |
31317663 | 34 | - Remove useless 'ident' arguement from ->getinfo_super method. |
d7514c58 NB |
35 | - Support --backup-file for backing-up critical section during |
36 | growth. | |
37 | - Erase old superblocks (of different versions) when creating new | |
38 | array. | |
39 | - Allow --monitor to work with arrays with >28 devices | |
40 | - Report reshape information in --detail | |
41 | - Handle symlinks in /dev better | |
42 | - Fix mess in --detail output which a device is missing. | |
2ae555c3 | 43 | - Manpage tidyup |
7ef02d01 NB |
44 | - Support 'bitmap=' in mdadm.conf for auto-assembling arrays with |
45 | write-intent bitmaps in separate files. | |
addc80c4 | 46 | - Updates to md.4 man page including section on RESTRIPING and SYSFS |
2efedc7b | 47 | |
1e0d770c NB |
48 | Changes Prior to 2.3.1 release |
49 | - Fixed -O2 compile so I could make and RPM. | |
50 | - Type cast number to be printed %llu so it compiles on 64bit | |
51 | machines. (Thanks Luca). | |
52 | - Stop using asm/byteorder.h - to make Redhat happy :-( | |
53 | - Require bitmap files to have a '/' in their name. | |
54 | - Error-check a few syscalls - code from SuSE package. | |
55 | ||
56 | Changes Prior to 2.3 release | |
ce4fafd6 NB |
57 | - Try /etc/mdadm/mdadm.conf if /etc/mdadm.conf doesn't exist. |
58 | This provided compatability for Debian. | |
a92f6acc NB |
59 | - Fixed for version-1 superblock: |
60 | report chunksize for raid6 and raid10 | |
61 | make sure device size used is a multiple of chunksize | |
62 | - Fix "--assemble --scan" crash. | |
63 | - Fix completely failure to create array on ppc64 | |
64 | - Fix memcmp in place of memcpy | |
65 | - A few minor improvements to online help | |
66 | - Clean up usage of 'long long' for used-size of devices, so | |
67 | that it is possible to create a raid1 of 7TB devices! | |
68 | - Make internal bitmaps work on 7TB raid1 arrays. | |
69 | - Provide error message if --examine doesn't find any superblock. | |
70 | - Report 'reshape' status in --examine - this depends on kernel | |
71 | patches that are not yet finalised. | |
72 | - Report bitmap status in --detail and --examine | |
73 | - Default to v1 superblocks instead of v0.90 if the array | |
74 | is too big for 0.90 to handle. | |
75 | - Sort the output of "mdadm --detail --scan" so that it is | |
76 | in a suitable order for assembling arrays. i.e. components come | |
77 | before an array that they are part of. | |
78 | - Print size of large reiserfs array properly went warning of | |
79 | possible confilcts. | |
ce4fafd6 | 80 | |
f3c7fda6 | 81 | Changes Prior to 2.2 release |
f9c25f1d NB |
82 | - Assorted bug fixes |
83 | - Support write-intent-bitmaps on raid10 | |
84 | - Support little-endian (Rather than hostendian) bitmaps. | |
85 | - Return correct error code from 'mdadm -S' | |
d9d4e469 | 86 | - Remove extra blank line from 'mdadm -Eb' output. |
c06487ce NB |
87 | - Improve option parsing so that -a and -b do not have |
88 | optional arguements: the arg is either required or not | |
89 | depending on context. | |
8b0dabea NB |
90 | - Allow scanning of devices listed in /proc/partitions even |
91 | if they don't appear in /dev. | |
47d79ef8 | 92 | - Support --assume-clean in --create mode as well as --build |
773135f5 NB |
93 | - Add support for --monitor to report to syslog: -y or --syslog. |
94 | Thanks to Ross Vandegrift | |
fe394e5e NB |
95 | - --monitor now reports which device failed in a 'Fail' message |
96 | This broke with 2.6 | |
ee04451c NB |
97 | - Improve chance of array starting properly after a crash. |
98 | mdadm was insisting the event numbers were identical, but this | |
99 | isn't needed, and is a problem if the crash was while the metadata | |
100 | was being updated. | |
7d99579f | 101 | - Support --update==uuid |
0ff1a185 NB |
102 | - Added README.initramfs and mkinitramfs to help people use an |
103 | initram for starting md arrays at boot. | |
f9c25f1d NB |
104 | |
105 | Changes Prior to 2.1 release | |
265e0f17 NB |
106 | - Fix assembling of raid10 array when devices are missing. |
107 | mdadm now correctly detects if a array is workable or not | |
108 | depending on which devices are present, and so will correctly | |
109 | handle "--assemble --force" if multiple devices have failed. | |
110 | - Report raid10 layout in --examine output. | |
308e1801 NB |
111 | - Fix assembling of arrays that use the version-1 superblock and |
112 | have spares. Previously the spares would be ignored. | |
113 | - Fix bug so that multiple drives can be re-added at once. | |
f6d75de8 NB |
114 | - Fix problem with hot-adding a bitmap to version-1-superblock |
115 | arrays. | |
265e0f17 NB |
116 | |
117 | Changes Prior to 2.0 | |
586ed405 NB |
118 | - Support assembling from byte-swapped superblocks |
119 | metadata type "0.swap" and --update=byteorder | |
dfd4d8ee | 120 | - write-mostly and write-behind support for raid1. |
947fd4dd NB |
121 | - Support --name= and 'name=' config entry for identifying |
122 | arrays be name. | |
a9d69660 NB |
123 | - RAID10 in man pages. |
124 | - Lot of minor manpage updates | |
586ed405 | 125 | |
f277ce36 NB |
126 | Changes Prior to 2.0-devel-3 release |
127 | - Assorted fixes for multiple bugs... | |
5e7519fa | 128 | - Add test suite |
f277ce36 NB |
129 | |
130 | Changes Prior to 1.12.0 release | |
60f91664 | 131 | Several of these are backported from the Debian package |
0bbc98b5 | 132 | - Don't use 'lstat' to check for blockdevices, use stat. |
779043ef | 133 | - Document --size=max option for --grow |
b8f72a62 | 134 | - Document SparesMissing event and DeviceDisappeared/WrongLevel |
91f068bf NB |
135 | - --stop --scan repeatly cycles until no more progress can be made |
136 | so that stack devices are stopped properly | |
3fa06e9d | 137 | - Minor type rationalisation for ident->uuid - now always 'int[]' |
891d2994 | 138 | - Fix type in online help for --grow (was -F, now -G) |
1337546d NB |
139 | - Allow --auto command line option to set default auto= |
140 | value when running "--assemble --scan". Previously | |
141 | --auto was ignored if --scan was given | |
a46f4061 | 142 | - Fix a few type casts |
5a6d1148 | 143 | - Fix parsing of /dev/md/N in is_standard |
d5d3721e | 144 | - Fix rounding errors in human_size() |
60f91664 | 145 | - Fix silly example in mdadm.conf-examples |
b79713f8 | 146 | - When finding a /dev name for a device, prefer shorter names |
22892d56 NB |
147 | - Suppress listing of devices= in --brief output of -D or -E, |
148 | unless -v is given (-vv gives the old behaviour with -Dsv). | |
149 | This is because the device list can change and so is not a | |
150 | stable aspect of the array | |
bd72c2b2 | 151 | - Allow --force with --grow so '-Gfn1' works (on raid1) |
8f23b0b3 | 152 | - Replace sprintf calls with snprintf (to quiet diet-libc) |
ccf44f32 | 153 | - Add man page for mdassemble |
fe6729fa | 154 | - Fix compilation with tinyc |
0bbc98b5 | 155 | |
e5811618 | 156 | Changes Prior to 1.11.0 release |
0fbf459d NB |
157 | - Fix embarassing bug which causes --add to always fail. |
158 | ||
d7eaf49f NB |
159 | Changes Prior to 1.10.0 release |
160 | - Fix bug with --config=partitions | |
161 | - Open sub-devices with O_EXCL to detect if already in use | |
b2b46bfc NB |
162 | - Make sure superblock updates are flushed directly to disk. |
163 | ||
f277ce36 | 164 | Changes Prior to 2.0-devel-1 release |
e793c2e5 NB |
165 | - Support for version-1 superblock. See --metadata option. |
166 | - Support for bitmap based intent logging. | |
167 | - Minor fixes. | |
168 | ||
9a4e08d2 NB |
169 | Changes Prior to 1.9.0 release |
170 | - Fix rpm build problem (stray %) | |
19f8b8fc | 171 | - Minor manpage updates |
182661f4 | 172 | - Change "dirty" status to "active" as it was confusing people. |
8d80900b NB |
173 | - --assemble --auto recognises 'standard' name and insists on using |
174 | the appropriate major/minor number for them. | |
175 | - Remove underscore from partition names, so partitions of | |
176 | "foo" are "foo1", "foo2" etc (unchanged) and partitions of | |
177 | "f00" are "f00p1", "f00p2" etc rather than "f00_p1"... | |
0df46c2a NB |
178 | - Use "major", "minor", "makedev" macros instead of |
179 | "MAJOR", "MINOR", "MKDEV" so that large device numbers work | |
180 | on 2.6 (providing you have glibc 2.3.3 or later). | |
43fc1676 | 181 | - Add some missing closes of open file descriptors. |
057bd352 NB |
182 | - Reread /proc/partition for every array assembled when using |
183 | it to find devices, rather than only once. | |
d17c1f8c NB |
184 | - Make "mdadm -Ss" stop stacked devices properly, by reversing the |
185 | order in which arrays are stopped. | |
e6b64cd0 | 186 | - Improve some error messages. |
0320ea45 NB |
187 | - Allow device name to appear before first option, so e.g. |
188 | mdadm /dev/md0 -A /dev/sd[ab] | |
189 | works. | |
190 | - Assume '-Q' if just a device is given, rather than being silent. | |
a3fd117c NB |
191 | - Change "dirty" status to "active" as it was confusing people. |
192 | ||
b5e64645 NB |
193 | Changes Prior to 1.8.0 release |
194 | - Makefile cleanup from Luca Berra <bluca@comedia.it> | |
195 | - --pid-file (-i) to set a pid file to use with --monitor --daemonise | |
196 | - Fix typo in mdadm man page | |
197 | - Fix coredump when "-s" used with no config file present. | |
198 | - Support new "faulty" personality which can inject synthetic | |
199 | faults. (Not in kernel.org yet at 1Nov2004) | |
200 | - Support raid0/linear on devices > 2 Terabytes | |
201 | - Make sure raid6 resyncs when created with one missing device | |
202 | ||
203 | Changes Prior to 1.7.0 release | |
e5329c37 NB |
204 | - Support "--grow --add" to add a device to a linear array, if the |
205 | kernel supports it. Not documented yet. | |
206 | - Restore support for uclibc which was broken recently. | |
207 | - Several improvements to the output of --detail, including | |
208 | reporting "resyncing" or "recovering" in the state. | |
209 | - Close filedescriptor at end of --detail (exit would have closed it | |
210 | anyway, so this isn't abig deal). | |
211 | - Report "Sync checkpoint" in --examine output if appropriate. | |
212 | - Add --update=resync for --assemble mode to for a resync when the | |
213 | array is assembled. | |
214 | - Add support for "raid10", which is under development in 2.6. | |
215 | Not documented yet. | |
216 | - --monitor now reads spare-group and spares info from config file | |
217 | even when names of arrays to scan are given on the command line | |
218 | ||
dd0781e5 NB |
219 | Changes Prior to 1.6.0 release |
220 | - Device name given in -Eb is determined by examining /dev rather | |
221 | than assuming /dev/md%d | |
222 | - Fix bug in --monitor where an array could be held open an so | |
223 | could not be stopped without killing mdadm. | |
224 | - Add --grow mode. Currently only --size and --raid-disks can be | |
225 | changed. Both require kernel support which, at the time of | |
226 | writing, is not in a release kernel yet. | |
227 | - Don't print out "errors" or "no-errors" in -D and -E, as the bit | |
228 | is never set or used. | |
229 | - Use md event notification in 2.6.??? to make --monitor mode | |
230 | respond instantly to events. | |
231 | - Add --auto= option and auto= configfile entry to tell mdadm to | |
232 | create device files as needed. This is particularly useful | |
233 | with partitioned arrays where the major device number can change. | |
234 | - When generating --brief listing, if the standard name doesn't | |
235 | exist, search /dev for one rather than using a temp name. | |
236 | - Allow --build to build raid1 and multipath arrays. | |
237 | - Add "--assume-clean" for Create and Build, particularly for raid1 | |
238 | Note: this is dangerous. Only use it if you are certain. | |
239 | - Fix bug so that Rebuild status monitoring works again. | |
240 | - Add "degraded" and "recovering" options to the "Status:" | |
241 | entry for --detail | |
242 | ||
243 | Changes Prior to 1.5.0 release | |
98c6faba NB |
244 | - new commands "mdassemble" which is a stripped-down equivalent of |
245 | "mdadm -As", that can be compiled with dietlibc. | |
246 | Thanks to Luca Berra <bluca@comedia.it>. | |
247 | It can be using in an initramfs or initrd. | |
248 | - Fix compiling error with BLKGETSIZE64 and some signed/unsigned | |
249 | comparison warnings. | |
250 | - Add Rebuild Status (% complete) to --detail output. | |
251 | - Support "--monitor --test" which will generate a test alert | |
252 | for each array once, to test notification paths. | |
253 | - Generate RebuildFinished event when rebuild finishes. | |
254 | - Support for raid6 as found in 2.6.2 - thanks to | |
255 | H. Peter Anvin <hpa@zytor.com> | |
256 | - Support partitioned md arrays with a different major number and | |
257 | naming scheme (md_dX in /proc/mdstat, /dev/md/dXpY in /dev). | |
258 | ||
feb716e9 NB |
259 | Changes Prior to 1.4.0 release |
260 | - Document fact that creating a raid5 array really creates a | |
261 | degraded array with a spare. | |
262 | - Add "spares=" tag to config file and generate it wit --detail and | |
263 | --examine | |
264 | - Add "SparesMissing" event when --monitor first sees an array and | |
265 | it doesn't have the enough spare devices. | |
266 | - Add --update=summaries for --assemble to update summary | |
267 | information in superblock, and correct other inconsistancies in | |
268 | the superblock. | |
269 | - Add --test option to --detail to set a meaningful exit status. | |
270 | ||
aa88f531 NB |
271 | Changes Prior to 1.3.0 release |
272 | - Make 'size' and unsigned long in Create to allow creation of | |
273 | larger arrays. | |
274 | - Explicitly flag spare devices as 'spare' in --detail and --examine | |
275 | output. Previously they simply had no flags lists. | |
276 | - Make MailCmd (for monitor) configurable in Makefile, and default | |
277 | to "/usr/sbin/sendmail -t". Also split out the warning related | |
278 | flags into CWFLAGS for easier build configurability. | |
279 | - Minor bugfix in Manage code. | |
280 | - --monitor now notices and reports degraded arrays at startup using | |
281 | "DegradedArray" event, and also has a --oneshot option to only | |
282 | report DegradedArrays, and then exit. | |
283 | - Small man-page clarification w.r.t. raid levels and raid4 in | |
284 | particular. | |
285 | - Disallow creation of arrays with only one device as this is | |
286 | probably a mistake. --force will override this check. | |
287 | - Correct some misleading documentation in the "mdadm --create --help" | |
288 | message. | |
289 | - Ignore chunksize if raid1 or multipath. | |
290 | - Explicit statement in man page that raid-disks cannot be changed | |
291 | after array is created. | |
292 | - Improve message when attempting to start an array with | |
293 | insufficient devices. Instead of required the array to be full, | |
294 | we only require it has as many active devices as last time. | |
295 | ||
56eedc1a NB |
296 | Changes Prior to 1.2.0 release |
297 | - Fix bug where --daemonise required an argument. | |
298 | - In --assemble --verbose, print appropriate message if device is | |
299 | not in devices= list | |
300 | - Updated mdadm.conf.5 to reflect fact that device= takes wildcards | |
301 | - Typos: componenet -> component | |
302 | - Reduce size of "--help" message put excess into "--help-options" | |
303 | - Fix bug introduced when MD_SB_DISKS dependancy removed, and which | |
304 | caused spares not be assembled properly. | |
305 | - Print appropriate message if --monitor --scan decides not to | |
306 | monitor anything. | |
d013a55e NB |
307 | Changes Prior to 1.1.0 release |
308 | - add --deamonise flag for --monitor - forks and prints pid to stdout | |
309 | - Fix bug so we REALLY clear dirty flag with -Af | |
310 | - -Db now prints a 'devices=' word for each array. | |
311 | - "mdadm -A /dev/md0" will get info from configfile, even without scan | |
312 | - When assembling multipath arrays, ignore devices which are flagged | |
313 | as having errors. | |
314 | - take --super-minor=dev to mean "use the minor number of the mddev | |
315 | being assembled. | |
316 | - take --config=none to mean "completely ignore config file" | |
317 | - Make --monitor require --scan or a device list. | |
5787fa49 NB |
318 | Changes Prior to 1.0.9 release |
319 | - Documentation updates including kernel parameters documented | |
320 | in md.4 | |
321 | - --assemble --force for raid4/5 will mark clean, needed for 2.5 | |
322 | - --detail prints out the events counter as well | |
323 | - flush device before reading superblock to be sure to get | |
324 | current data | |
325 | - added mdadm.static target to makefile for static linking | |
326 | - --monitor was ignoring /dev/md0 due to off-by-one error | |
327 | - Fix assorted typos | |
328 | - Fix printing of Gibibytes - calc was wrong. | |
329 | - Fix printing of Array Size in --detail when very big. | |
330 | - --monitor no longer tries to work for raid0 or linear as these | |
d013a55e | 331 | have nothing to be monitored. |
5787fa49 NB |
332 | - The word 'partitions' on a DEVICE line will cause all partitions |
333 | listed in /proc/partitions to be considered | |
334 | - If the config file is called 'partitions' then it will be treated | |
335 | as though it contained exactly 'device partitions' so e.g. | |
336 | mdadm -Ebsc partitions | |
d013a55e | 337 | will find all raid partitions easily. |
5787fa49 NB |
338 | - successfully assemble multipath devices by ignoring raid_disk |
339 | value from superblock (it is always the same). | |
340 | - --assemble not tied to MD_SB_DISKS limit quite so much | |
341 | - Support compiling with tcc | |
342 | - Support compiling with uclibc - just skip scan of /dev | |
343 | - Add --update= option for Assemble mode. Either sparc2.2 | |
344 | or super-minor updates are possible. See mdadm.8 | |
345 | ||
346 | Changes Prior to 1.0.1 release | |
bd526cee NB |
347 | - Round off MB/GiB etc values instead of round down. |
348 | - Add --sparc2.2 option to examine to shift superblock around | |
349 | and --sparc2.2update to rewrite the superblock | |
5787fa49 | 350 | - Fix assorted typos in online help |
bd526cee NB |
351 | |
352 | Changes Prior to 1.0.0 release | |
2d465520 NB |
353 | - Allow --config with Misc mode (for --examine --scan) |
354 | - Add $(CXFLAGS) to end of CFLAGS in makefile | |
355 | - When making an N disk raid5 array, the Nth drive | |
356 | is moved to the end of the array as a spare rather than | |
357 | being shifted up one place. This means that when the | |
358 | kernel builds onto the last spare and inserts it, | |
359 | the devices will be in the expected order. | |
360 | - Man page improvements | |
361 | Changes Prior to 0.8.2 release | |
b83d95f3 NB |
362 | - Correct spelling of persist[ae]nce/persist[ae]nt. |
363 | - Change "disk" to "device" in options and config file | |
364 | - convert array size to "long long" *before* shift-left in -D and -Q | |
365 | ||
366 | Changes Prior to 0.8.1 release | |
c913b90e NB |
367 | - Add "INSTALL" file. |
368 | - Fix some "i" variables that were not being set properly | |
369 | - Initialise minsize and maxsize so that compilers don't complain. | |
370 | - Tidy up Makefile and mdadm.spec installations | |
371 | - Add "multipath" to documentation of valid levels | |
372 | ||
373 | Changes Prior to 0.8 release | |
e0d19036 NB |
374 | - Fix another bug in Assemble.c due to confusing 'i' with 'j' |
375 | - Minimal, untested, support for multipath | |
376 | - re-write of argument parsing to have more coherent modes, | |
377 | - add --query,-Q option | |
378 | - Update mdadm.8 to reflect arg processing change and --query | |
379 | - Change "long" to "unsigned long" for device sizes | |
380 | - Handle "mailaddr" and "program" lines in config file for follow/scan mode. | |
381 | - --follow --scan will exit if no program or mail found | |
382 | - Add MAILADDR and PROGRAM to mdadm.conf-example | |
383 | - Spell check man pages | |
384 | - consistently use "component devices" instead of "subdevices" | |
385 | - Make -Wall -Werror really work and fix lots of errors. | |
386 | - --detail and --stop can have --scan which chooses devices from /proc/mdstat | |
387 | - --monitor detects 20% changes in resync, failed spares, | |
388 | disappearing arrays, | |
389 | - --monitor --scan will automatically add any devices found in /proc/mdstat | |
390 | - --monitor will move spares between arrays with same spare-group if necessary | |
391 | - Documentation for Monitor Mode | |
392 | - --query notes if the array containing the given device is active or not | |
393 | - Finished md.4 man page. | |
394 | ||
395 | Changes Prior to 0.7.2 release | |
11a3e71d NB |
396 | - mdadm.spec updates and ifdef BLKGETSIZE64 from Luca Berra -- bluca@comedia.it |
397 | - more mdadm.spec updates from Gregory Leblanc <gleblanc@linuxweasel.com> | |
398 | - make directory for mdadm.conf configurable in Makefile | |
399 | - Finished mdadm.conf.5. Removed details of conf file from | |
400 | mdadm.8 leaving a reference to mdadm.conf.5. | |
401 | - Fix bug in Assemble.c, thanks to Junaid Rizvi <domdev@sat.net.pk> | |
402 | - Get --assemble --force to make sure old major/minor numbers are | |
403 | consistant, as md.c worries about this :-( | |
404 | ||
405 | ||
406 | Changes Prior to 0.7.1 release | |
56eb10c0 NB |
407 | - update mdadm.spec |
408 | - use BLKGETSIZE64 if available for array size | |
409 | - give human readable as GiB/MiB and GB and MB, with 2 decimal point precision | |
410 | - Only warn about size variation for raid1/4/5. | |
411 | - Started md.4 man page | |
412 | - Started mdadm.conf.5 man page | |
413 | ||
9a9dab36 NB |
414 | Changes Prior to 0.7 release |
415 | ||
416 | - Fix makefile to install binary at /sbin and not /sbin/sbin | |
417 | Also install man page. | |
418 | - Add --zero-superblock based on --destroywithextremeprejudice | |
419 | from Dale Stephenson <steph@snapserver.com> | |
420 | - change name to mdadm. It is palandromic, and much nicer to pronouce. | |
421 | ||
cd29a5c8 NB |
422 | Changes Prior to 0.6 release |
423 | ||
9a9dab36 | 424 | - Remove the limit on the number of device names that can be |
cd29a5c8 NB |
425 | given on the command line. |
426 | - Fix bug in --assemble --force where it would only update a | |
427 | single superblock. | |
428 | - Fix bogus printing of big numbers not being block devices | |
429 | when given names of devices that don't exist. | |
430 | - When --assemble --force, consider superblocks with an event | |
431 | count that is 1 behind as out-of-date. Normally they are | |
432 | considered up-to-date (as the kernel assumes this too). | |
433 | - When marking drives as not-failed in the superblock, | |
434 | we also mark them as ACTIVE and SYNC. | |
435 | - Don't start arrays for which not all drives are available unless: | |
436 | --scan which implies that all drives were found automatically | |
437 | --run which means the user knows what they want | |
438 | --force which means that we are fixing something broken | |
439 | - Make sure all device numbers passed as 3rd arg of ioctl | |
440 | are passed as unsigned lock, so that it works on SPARC | |
441 | - If HOT_ADD_DISK failes for -a, then only try ADD_NEW_DISK | |
442 | if we cannot read from the array, i.e. if the array is | |
443 | not started yet. | |
444 | - man page update | |
445 | - Taught Examine to handle --scan. It examines all devices listed | |
446 | on DEVICE lines in the config file. | |
447 | - Added --brief (-b) flag for Examine and Detail to print out | |
448 | and mdctl.conf compatible description with uuid=, level=, | |
449 | disks= and - for Examine - devices= | |
450 | --examine --brief collects all devices the make the one array and | |
451 | list them as one entry. | |
452 | - Added level= and disks= options to ARRAY lines in config files | |
453 | so --brief output could be used as-is. | |
454 | - Make parity style ({left,right}-{,a}symmetric) consistantly use -, | |
455 | never _. | |
456 | - Add "Array Size" to --detail output | |
457 | - Change "Size" to "Device Size" and exclude from Detail of arrays | |
458 | that do not have a consistent device size. | |
459 | - Add Human readable MiB or GiB value on size lines of Detail and Examine | |
460 | - --assemble --scan doesn't complain about active drives | |
461 | - require number of spares given in -x to be listed. | |
462 | - Made --build actually work. | |
463 | Changes Prior to 0.5 release | |
464 | ||
465 | --assemble: | |
466 | spare drives are handled properly. | |
467 | ||
468 | --force can be used to recover from 2-drive failures on RAID5 | |
469 | If you belive that /dev/hda1 /dev/hdb1 /dev/hdc1 /dev/hdd1 should | |
470 | make a raid5 array, but it has experienced multiple failures and | |
471 | wont start, then | |
472 | ||
473 | mdctl --assemble --force /dev/md0 /dev/hd[abcd]1 | |
474 | ||
475 | Should update the superblock on the newest failed drive and | |
476 | restart the array in degraded mode. You should then remove the | |
477 | remaining failed drive and re-add it (if you are happy that it | |
478 | might work). | |
479 | ||
480 | Ofcourse whenever you have a 2-drive failure, you have a risk | |
481 | of corruption in data that hasn't be changed for a long time. So | |
482 | this doesn't give you your array back all nice and happy, but it | |
483 | does allow you to recover data that might not be corrupt. | |
484 | ||
485 | More flexibility in identifying a RAID array in the mdctl.conf | |
486 | e.g. | |
487 | array /dev/md4 super-minor=4 | |
488 | ||
489 | assembles /dev/md4 from all devices found that have a raid | |
490 | superblock that says the minor number of the array is 4. | |
491 | If the blocks with the right minor number do not all have the | |
492 | same UUID, an error is flags and no assembly happens. | |
493 | ||
494 | array /dev/md3 devices=/dev/hd[abc]2 | |
495 | ||
496 | Assembles /dev/md3 drom /dev/hda2 /dev/hdb2 and/dev/hdc2. All | |
497 | devices must exist and have raid superblock with the same uuid. | |
498 | ||
499 | If two identity specifiers are used, only devices that match all | |
500 | of them are considered, so | |
501 | ||
502 | array /dev/md2 devices=/dev/hd?2 super-minor=2 | |
503 | ||
504 | will assemble /dev/md2 using all /dev/hd?2 devices which have a | |
505 | raid superblock with minor number 2. | |
506 | ||
507 | --create: | |
508 | When listing devices for --create, the word "missing" can be | |
509 | used to indicate that the respective slot does not have a | |
510 | working drive currently. This is similar to the "failed-disk" | |
511 | directive in mkraid/raidtab. | |
512 | e.g. | |
513 | mdctl --create --level=5 -raid-disks=4 --spare-disks=2 | |
514 | /dev/md0 /dev/sda /dev/sdb missing /dev/sdc /dev/sdd /dev/sde | |
515 | ||
516 | will create a raid5 array with the third slot empty, and two | |
517 | spares. | |
518 | ||
519 | By default, raid5 arrays are created with the last slot empty | |
520 | and drive listed for the last slot added as a spare. If a | |
521 | "missing" slot is given, or if --force is given, then --create | |
522 | does exactly what you ask and doesn't try to be clever. | |
523 | ||
524 | ||
525 | --follow / --monitor: | |
526 | ||
527 | This is a new mode. I couldn't stop my self from picking a name | |
528 | starting with F (as current modes start A,B,C,D,E) but I | |
529 | relented and provided an alternate name that is somewhat more | |
530 | meaningful. | |
531 | ||
532 | In this mode, mdctl does not exit, but runs continuously and | |
533 | periodically polls all the md devices to see if they have had | |
534 | any interested state change. | |
535 | The changes that it currently notices are: | |
536 | Fail - an active disc fails | |
537 | FailSpare - a spare, that was presumably being build, fails | |
538 | ActiveSpare - a spare becomes active, presumably after a rebuild. | |
539 | ||
540 | Options: | |
541 | --mail mailaddress - send Email on any Fail* event | |
542 | --program program - run the program on any event. | |
543 | Args are: eventname mddevice subdevice(if-known) | |
544 | --delay seconds - change from the default 60second pause | |
545 | between polls. | |
546 | ||
547 | I plan to add functionality to this mode to allow sharing of | |
548 | spare drives. If an array is marks "spare-group=fred", and it | |
549 | has a failed drive and no spares, and if some other array is | |
550 | also "spare-group=fred" and it has no failed drives, but does | |
551 | have a spare drive that is big enough, the spare will be moved | |
552 | to the first array. | |
553 | ||
554 | I also have the idea of adding a --grow mode which will re-organise | |
555 | the data on an N disk raid0/4/5 array to be on an N+M disk array. | |
556 | I have no concrete plans for this though. | |
557 | ||
558 | I got rid of the "v" in the archive file name, and include the | |
559 | version number in the directory created by the archive. | |
560 | ||
561 | There is now a man page and mdctl.spec (for rpm) thanks to | |
562 | Danilo Godec <danci@agenda.si>. | |
563 | ||
564 | Ofcourse, the man page is now out of date and despite being based on | |
565 | the --help output, is not wholy correct. After I get --follow | |
566 | working properly, I plan to revise the various documentation and/or | |
567 | the code to make sure the two match. |