+2004-june-02
+ * Don't print 'errors' flag, it is meaningless. DONE
+ * Handle new superblock format
+ * create device file on demand, particularly partitionable devices. DONE
+ BUT figure a way to create the partition devices.
+ auto=partN
+ * Use Event: interface to listen for events. DONE, untested
+ * Make sure mdadm -As can assemble multi-level RAIDs ok.
+ * --build to build raid1 or multipath arrays
+ clean or not ???
+
+----------------------------------------------------------------------------
+* mdadm --monitor to monitor failed multipath paths and re-instate them.
-- check superblock checksum in examine
-- report "chunk" or "rounding" depending on raid level
+* Maybe make "--help" fit in 80x24 and have a --long-help with more info. DONE
+
+
+* maybe "missing" instead of <bold>missing</> in doco DONE
+* possibly wait for resync to start, or even finish while assembling.- NO
+
+* -Db should have a devices= entry if possible. - DONE
+* when assembling multipath arrays, ignore any error indicators. - DONE
+* rationalise --monitor usage:
+ mdadm --monitor
+ doesn't do as expected. DONE
+
+* --assemble could have a --update option. - DONE
+ following word can be:
+ sparc2.2
+ super-minor
+
+* mdadm /dev/md11, where md11 is raid0 can segfault, particularly when looking in the
+ [UU_UUU] string ... which doesn't exist !
+It should be more sensible. DONE
+
+Example:
+
+from Raimund Sacherer <raimund.sacherer@ngit.at>
+
+mke2fs -m0 -q /dev/ram1 300
+mount -n -t ext2 /dev/ram1 /tmp
+echo DEVICE /dev/[sh]* >> /tmp/mdadm.conf
+mdadm -Esb /dev/[sh]* 2>/dev/null >> /tmp/mdadm.conf
+mdadm -ARsc /tmp/mdadm.conf
+umount /tmp
+
+
+?? Allow -S /dev/md? - current complains subsequent not a/d/r - DONE
+
+* new "Query" mode to subsume --detail and --examine.
+ --query or -Q, takes a device and tells if it is an MD device,
+ and also tells in a raid superblock is found.
+ DONE
+
+* write mdstat.c to parse /proc/mdstat file
+ Build list of arrays: name, rebuild-percent
+ DONE
+
+* parse /proc/partitions and map major/minor into /dev/* names,
+ and use that for default DEVICE list ????
+
+* --detail --scan to read /proc/mdstat, and then iterate over these,
+ but assume --brief. --verbose can override
+ check each subdevice to see if it is in conf_get_devs.
+ Warn if not.
+ DONE, but don't warn yet...
+
+* Support multipath ... maybe...
+ maybe DONE
+
+* --follow to syslog
+
+* --follow to move spares around DONE
+
+* --follow to notice other events: DONE
+ rebuild started
+ spare activated
+ spare removed
+ spare added
+
+------------------------------------
+- --examine --scan scans all drives and build an mdadm.conf file DONE
+
+- check superblock checksum in examine DONE
+- report "chunk" or "rounding" depending on raid level DONE
- report "linear" instead of "-1" for raid level DONE
- decode ayout depending on raid level DONE
-- get Assemble to upgrade devices if force flag.
-- --verbose and --force flags.
+- --verbose and --force flags. DONE
-- set md_minor, *_disks for Create
+- set md_minor, *_disks for Create - DONE
- for create raid5, how to choose between
all working, but not insync
- one missing, one spare, insync
+ one missing, one spare, insync DONE (--force)
+- and for raid1 - some failed drives... (missing)
+
+- when RUN_ARRAY, make sure *_disks counts are right
+
+- get --detail to extract extra stuff from superblock,
+ like uuid DONE
+- --detail --brief to give a config file line DONE
+- parse config file. DONE
+- test...
+
+- when --assemble --scan, if an underlying device is an md device,
+ then try to assemble that device first.
+
+
+- mdadm -S /dev/md0 /dev/md1 gives internal error FIXED
+
+- mdadm --detail --scan print summary of what it can find? DONE
+
+
+---------
+Assemble doesn't add spares. - DONE
+Create to allow "missing" name for devices.
+Create to accept "--force" for do exactly what is requested
+- get Assemble to upgrade devices if force flag.
+ARRAY lines in config file to have super_minor=n
+ARRAY lines in config file to have device=pattern, and only accept
+ those devices
+ If UUID given, insist on that
+ If not, but super_minor given, require all found with that minor
+ to have same uuid
+ If only device given, all valid supers on those devices must have
+ same uuid
+allow /dev/mdX as first argument before any options
+Possible --dry-run option for create and assemble--force
+
+Assemble to check that all devices mentioned in superblock
+ are present.
+
+New mode: --Monitor (or --Follow)
+ Periodically check status of all arrays (listed in config file).
+ Log every event and apparent cause - or differences
+ Email and alert - or run a program - for important events
+ Move spares around if necessary.
+
+ An Array line can have a spare-group= field that indicates that
+ the array shares spares with other arrays with the same
+ spare-group name.
+ If an array has a failed and no spares, then check all other
+ arrays in the spare group. If one has no failures and a spare,
+ then consider that spare.
+ Choose the smallest considered spare that is large enough.
+ If there is one, then hot-remove it from it's home, and
+ hot-add it to the array in question.
+
+ --mail-to address
+ --alert-handler program
+
+ Will also extract information from /proc/mdstat if present,
+ and consider 20% marks in rebuild as events.
+
+ Events are:
+ drive fails - causes mail to be sent
+ rebuild started
+ spare activated
+ spare removed
+ spare added
projects / thirdparty / mdadm.git / blobdiff