*
* If !uuidset and scan, look in conf-file for uuid
* If not found, give up
- * If !devlist and scan and uuidset, get list of devs from conf-file
+ * If !devlist and scan and uuidset, get list of devs from conf-file
*
* For each device:
* Check superblock - discard if bad
int chosen_drive;
int change = 0;
int inargv = 0;
- int start_partial_ok = force || devlist==NULL;
+ int start_partial_ok = (runstop >= 0) && (force || devlist==NULL);
unsigned int num_devs;
mddev_dev_t tmpdev;
struct mdinfo info;
st->ss->update_super(&info, super, update, devname, verbose);
dfd = dev_open(devname, O_RDWR|O_EXCL);
- if (dfd < 0)
+ if (dfd < 0)
fprintf(stderr, Name ": Cannot open %s for superblock update\n",
devname);
else if (st->ss->store_super(st, dfd, super))
> devices[most_recent].events)
most_recent = devcnt;
}
- if (info.array.level == -4)
+ if (info.array.level == -4)
/* with multipath, the raid_disk from the superblock is meaningless */
i = devcnt;
else
}
if (force && okcnt == info.array.raid_disks-1) {
/* FIXME check event count */
- change += st->ss->update_super(&info, super, "force",
+ change += st->ss->update_super(&info, super, "force",
devices[chosen_drive].devname, verbose);
}
inf.major_version = st->ss->major;
inf.minor_version = st->minor_version;
rv = ioctl(mdfd, SET_ARRAY_INFO, &inf);
- } else
+ } else
rv = ioctl(mdfd, SET_ARRAY_INFO, NULL);
if (rv) {
}
if (runstop == 1 ||
- (runstop == 0 &&
+ (runstop <= 0 &&
( enough(info.array.level, info.array.raid_disks, info.array.layout, avail, okcnt) &&
(okcnt >= req_cnt || start_partial_ok)
))) {
if (verbose >= 0) {
fprintf(stderr, Name ": %s has been started with %d drive%s",
mddev, okcnt, okcnt==1?"":"s");
- if (okcnt < info.array.raid_disks)
+ if (okcnt < info.array.raid_disks)
fprintf(stderr, " (out of %d)", info.array.raid_disks);
if (sparecnt)
fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s");
return 1;
}
if (runstop == -1) {
- fprintf(stderr, Name ": %s assembled from %d drive%s, but not started.\n",
+ fprintf(stderr, Name ": %s assembled from %d drive%s",
mddev, okcnt, okcnt==1?"":"s");
+ if (okcnt != info.array.raid_disks)
+ fprintf(stderr, " (out of %d)", info.array.raid_disks);
+ fprintf(stderr, ", but not started.\n");
return 0;
}
if (verbose >= 0) {
bitmap's uuid too.
- Add a copy of /proc/mdstat to the mail message send by mdadm
--monitor.
+ - New flag --no-degraded to avoid starting arrays if there are
+ fewer devices available than last time the array was started.
+ This is only needed with --scan, as with --scan, that behaviour
+ is the default.
Changes Prior to 2.4.1 release
- Honour --write-mostly when adding to an array without persistent
- Change "dirty" status to "active" as it was confusing people.
- --assemble --auto recognises 'standard' name and insists on using
the appropriate major/minor number for them.
- - Remove underscore from partition names, so partitions of
+ - Remove underscore from partition names, so partitions of
"foo" are "foo1", "foo2" etc (unchanged) and partitions of
"f00" are "f00p1", "f00p2" etc rather than "f00_p1"...
- - Use "major", "minor", "makedev" macros instead of
+ - Use "major", "minor", "makedev" macros instead of
"MAJOR", "MINOR", "MKDEV" so that large device numbers work
on 2.6 (providing you have glibc 2.3.3 or later).
- Add some missing closes of open file descriptors.
- Restore support for uclibc which was broken recently.
- Several improvements to the output of --detail, including
reporting "resyncing" or "recovering" in the state.
- - Close filedescriptor at end of --detail (exit would have closed it
+ - Close filedescriptor at end of --detail (exit would have closed it
anyway, so this isn't abig deal).
- Report "Sync checkpoint" in --examine output if appropriate.
- Add --update=resync for --assemble mode to for a resync when the
- array is assembled.
+ array is assembled.
- Add support for "raid10", which is under development in 2.6.
Not documented yet.
- --monitor now reads spare-group and spares info from config file
- Support "--monitor --test" which will generate a test alert
for each array once, to test notification paths.
- Generate RebuildFinished event when rebuild finishes.
- - Support for raid6 as found in 2.6.2 - thanks to
+ - Support for raid6 as found in 2.6.2 - thanks to
H. Peter Anvin <hpa@zytor.com>
- Support partitioned md arrays with a different major number and
naming scheme (md_dX in /proc/mdstat, /dev/md/dXpY in /dev).
- Fix bug introduced when MD_SB_DISKS dependancy removed, and which
caused spares not be assembled properly.
- Print appropriate message if --monitor --scan decides not to
- monitor anything.
+ monitor anything.
Changes Prior to 1.1.0 release
- add --deamonise flag for --monitor - forks and prints pid to stdout
- Fix bug so we REALLY clear dirty flag with -Af
- "mdadm -A /dev/md0" will get info from configfile, even without scan
- When assembling multipath arrays, ignore devices which are flagged
as having errors.
- - take --super-minor=dev to mean "use the minor number of the mddev
+ - take --super-minor=dev to mean "use the minor number of the mddev
being assembled.
- take --config=none to mean "completely ignore config file"
- Make --monitor require --scan or a device list.
- Remove the limit on the number of device names that can be
given on the command line.
- - Fix bug in --assemble --force where it would only update a
+ - Fix bug in --assemble --force where it would only update a
single superblock.
- Fix bogus printing of big numbers not being block devices
when given names of devices that don't exist.
- When --assemble --force, consider superblocks with an event
count that is 1 behind as out-of-date. Normally they are
considered up-to-date (as the kernel assumes this too).
- - When marking drives as not-failed in the superblock,
+ - When marking drives as not-failed in the superblock,
we also mark them as ACTIVE and SYNC.
- Don't start arrays for which not all drives are available unless:
--scan which implies that all drives were found automatically
not started yet.
- man page update
- Taught Examine to handle --scan. It examines all devices listed
- on DEVICE lines in the config file.
+ on DEVICE lines in the config file.
- Added --brief (-b) flag for Examine and Detail to print out
and mdctl.conf compatible description with uuid=, level=,
disks= and - for Examine - devices=
- --examine --brief collects all devices the make the one array and
+ --examine --brief collects all devices the make the one array and
list them as one entry.
- Added level= and disks= options to ARRAY lines in config files
so --brief output could be used as-is.
superblock that says the minor number of the array is 4.
If the blocks with the right minor number do not all have the
same UUID, an error is flags and no assembly happens.
-
+
array /dev/md3 devices=/dev/hd[abc]2
Assembles /dev/md3 drom /dev/hda2 /dev/hdb2 and/dev/hdc2. All
array /dev/md2 devices=/dev/hd?2 super-minor=2
- will assemble /dev/md2 using all /dev/hd?2 devices which have a
+ will assemble /dev/md2 using all /dev/hd?2 devices which have a
raid superblock with minor number 2.
-
+
--create:
When listing devices for --create, the word "missing" can be
used to indicate that the respective slot does not have a
and drive listed for the last slot added as a spare. If a
"missing" slot is given, or if --force is given, then --create
does exactly what you ask and doesn't try to be clever.
-
+
--follow / --monitor:
This is a new mode. I couldn't stop my self from picking a name
starting with F (as current modes start A,B,C,D,E) but I
relented and provided an alternate name that is somewhat more
- meaningful.
-
+ meaningful.
+
In this mode, mdctl does not exit, but runs continuously and
periodically polls all the md devices to see if they have had
any interested state change.
Options:
--mail mailaddress - send Email on any Fail* event
- --program program - run the program on any event.
+ --program program - run the program on any event.
Args are: eventname mddevice subdevice(if-known)
--delay seconds - change from the default 60second pause
between polls.
There is now a man page and mdctl.spec (for rpm) thanks to
Danilo Godec <danci@agenda.si>.
-
+
Ofcourse, the man page is now out of date and despite being based on
the --help output, is not wholy correct. After I get --follow
working properly, I plan to revise the various documentation and/or
{"stop", 0, 0, 'S'},
{"readonly", 0, 0, 'o'},
{"readwrite", 0, 0, 'w'},
+ {"no-degraded",0,0, 4 },
/* For Detail/Examine */
{"brief", 0, 0, 'b'},
" --force -f : Assemble the array even if some superblocks appear out-of-date\n"
" --update= -U : Update superblock: one of sparc2.2, super-minor or summaries\n"
" --auto(=p) -a : Automatically allocate new (partitioned) md array if needed.\n"
+" --no-degraded : Do not start any degraded arrays - default unless --scan.\n"
"\n"
" For detail or examine:\n"
" --brief -b : Just print device name and UUID\n"
" Those devices are md devices that are to be assembled. Their identity\n"
" and components are determined from the config file.\n"
"\n"
+" If mdadm can not find all of the components for an array, it will assemble\n"
+" it but not activate it unless --run or --scan is given. To preserve this\n"
+" behaviour even with --scan, add --no-degraded. Note that \"all of the\n"
+" components\" means as many as were present the last time the array was running\n"
+" as recorded in the superblock. If the array was already degraded, and\n"
+" the missing device is not a new problem, it will still be assembled. It\n"
+" is only newly missing devices that cause the array not to be started.\n"
+"\n"
"Options that are valid with --assemble (-A) are:\n"
" --bitmap= : bitmap file to use wit the array\n"
" --uuid= -u : uuid of array to assemble. Devices which don't\n"
" --force -f : Assemble the array even if some superblocks appear\n"
" : out-of-date. This involves modifying the superblocks.\n"
" --update= -U : Update superblock: one of sparc2.2, super-minor or summaries\n"
+" --no-degraded : Assemble but do not start degraded arrays.\n"
;
char Help_manage[] =
projects / thirdparty / mdadm.git / commitdiff
