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* Fix all the confusion over directories once and for all. We now haveDoug Ledford2010-04-131-10/+8
| | | | | | | | | | | | 3 directory definitions: mdmon directory for its pid and sock files, mdmonitor directory which is for the mdadm monitor mode pid file and can only be passed in via command line, and the directory for the mdadm map file. Only the mdadm map file still hunts multiple locations, and the number of locations has been reduced to /var/run and the compile time specified location. I could see lowering that to just 1 location, but I didn't do that with this patch. Signed-off-by: Doug Ledford <dledford@redhat.com>
* Only signal a udev change event if we actually write a mapfile in RebuildMapDoug Ledford2010-03-241-6/+8
| | | | Signed-off-by: Doug Ledford <dledford@redhat.com>
* mapfile: if we putting the mapfile in a custom location via ALT_RUN, allowDoug Ledford2010-03-241-1/+1
| | | | | | a custom filename too. Signed-off-by: Doug Ledford <dledford@redhat.com>
* Create directory to contain mapfile (Assuming parent exists andDoug Ledford2010-03-241-4/+13
| | | | | | | | filesystem is writable). This particularly keeps udev happy if VAR_RUN is set to /dev/md. Signed-off-by: Doug Ledford <dledford@redhat.com> Signed-off-by: NeilBrown <neilb@suse.de>
* mapfile: use ALT_RUN as alternate place to store mapfileNeilBrown2010-02-081-4/+4
| | | | | | This gives better consistency and fewer hidden '.' files. Signed-off-by: NeilBrown <neilb@suse.de>
* mapfile: fix locking.NeilBrown2010-01-291-2/+5
| | | | | | | | | | | The current locking uses lockf, and is completely broken. When you hold a lockf lock, any close of any fd on that file will release the lock. So map_read() call which is made as soon as we get the lock, will immediately drop the lock. So change to flock locking which isn't so badly designed. Signed-off-by: NeilBrown <neilb@suse.de>
* Fix null-dereference in set_member_infoNeilBrown2009-10-011-6/+9
| | | | | | | set_member_info would try to dereference ->metadata_version, without checking that it isn't NULL. Signed-off-by: NeilBrown <neilb@suse.de>
* fix RebuildMap() to retrieve 'subarray' infoDan Williams2009-07-311-1/+31
| | | | | | | | | | | | | | | | | | RebuildMap falsely returns container info for member arrays. Retrieving the subarray and container_dev details prior to ->load_super() changes the result from: md127 imsm 082c6371:74b5ce03:64972e41:6b0860d5 /dev/md/imsm md126 imsm 082c6371:74b5ce03:64972e41:6b0860d5 /dev/md/vol0 ...to: md126 /md127/0 3e03aee2:78c3c593:1e8ecaf0:eefb53ed /dev/md/vol0 md127 imsm 082c6371:74b5ce03:64972e41:6b0860d5 /dev/md/imsm Reported-by: Ignacy Kasperowicz <ignacy.kasperowicz@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* mapfile - when rebuilding, choose an appropriate name is none is found.NeilBrown2009-05-111-1/+84
| | | | | | | | When rebuilding the mapfile (mdadm -Ir), if not appropriate name is found in /dev/md/, try to find an appropriate name, either by looking in mdadm.conf or by using the name in the metadata. Signed-off-by: NeilBrown <neilb@suse.de>
* mapfile - Fix off-by-one error in RebuildMapNeilBrown2009-05-111-1/+1
| | | | | | | "mdadm -Ir" would get the path for md0 wrong because it went looking for mdp(-1) by mistake. Signed-off-by NeilBrown <neilb@suse.de>
* mapfile: allow the path name to the device to be empty.NeilBrown2009-05-111-5/+8
| | | | | | | Allowing an empty name and coping with it is less confusing than seeing "/empty" appear. Signed-off-by: NeilBrown <neilb@suse.de>
* Merge branch 'master' of git://github.com/djbw/mdadm into devel-3.0NeilBrown2009-04-141-1/+4
|\ | | | | | | | | | | | | | | | | Conflicts: Grow.c mdadm.h sysfs.c Due to independent fixes for the "mdadm hangs if reshape finishes too quickly" problem.
| * RebuildMap: handle missing disksDan Williams2009-04-121-1/+4
| | | | | | | | | | | | | | | | | | When rebuilding the map file tolerate missing/offline disks, otherwise we will segfault on the NULL return from sysfs_read. Reported-by: Jacek Danecki <jacek.danecki@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* | mapfile: optionally store map file in /devNeilBrown2009-04-141-44/+51
|/ | | | | | | | | | | During early boot, /var/run may not exist or be writable. If that happens, sore the mapfile (which is very important for incremental assembly) in /dev (which should exist for udev). Thanks to Doug Ledford <dledford@redhat.com> for identify this problem and suggesting a solution. Signed-off-by: NeilBrown <neilb@suse.de>
* Merge branch 'master' into scratch-3.0NeilBrown2009-01-081-0/+1
|\ | | | | | | | | | | | | Conflicts: Assemble.c config.c
| * Free mdstat data structures properly.NeilBrown2009-01-081-0/+1
| | | | | | | | | | | | | | In one case we called 'free' instead of 'mdstat_free'. In others we didn't free at all. Signed-off-by: NeilBrown <neilb@suse.de>
* | Merge branch 'master' into devel-3.0NeilBrown2008-12-181-0/+59
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: Assemble.c Incremental.c Kill.c ReadMe.c inventory mapfile.c mdadm.8 mdadm.spec mdassemble.8
| * map: rebuild map if it doesn't exist.NeilBrown2008-12-181-0/+53
| | | | | | | | | | | | | | | | | | It is possible for some arrays to be created e.g. by initrd, and so not get mentioned in /var/run/mdadm/map. As "-I" depends on things being listed in 'map', we create it by scanning all devices if it doesn't exist. Signed-off-by: NeilBrown <neilb@suse.de>
* | mapfile: validate entries before they are returned.NeilBrown2008-11-041-10/+29
| | | | | | | | | | | | | | It is possible for the mapfile to become wrong, and that gets very confusing. So validate entries before returning them. Signed-off-by: NeilBrown <neilb@suse.de>
* | mdopen: use small sequence number for uniquifying array names.NeilBrown2008-11-041-0/+15
| | | | | | | | | | | | | | | | | | Rather than appending the md minor number, we now append a small sequence number to make sure name in /dev/md/ that aren't LOCAL are unique. As the map file is locked while we do this, we are sure of no losing any races. Signed-off-by: NeilBrown <neilb@suse.de>
* | Incremental: lock against multiple concurrent additions to an array.NeilBrown2008-11-041-0/+37
| | | | | | | | | | | | | | In two devices are added via -I to one array at the same time, mdadm can get badly confused. Signed-off-by: NeilBrown <neilb@suse.de>
* | Manage: when stopping an array, delete all names from /dev.NeilBrown2008-11-041-0/+11
| | | | | | | | | | | | | | | | | | This only applies if udev isn't installed or is disabled by MDADM_NO_UDEV We try to remove partitions too. We find names to remove by looking in /var/run/mdadm/map Signed-off-by: NeilBrown <neilb@suse.de>
* | Always update mdadm/map when starting an array.NeilBrown2008-11-041-1/+2
| | | | | | | | | | | | | | | | We previously only updated /var/run/mdadm/map when starting an array with --incremental. However we now make more use of that file (to pass the dev name to udev) so always update it. Signed-off-by: NeilBrown <neilb@suse.de>
* | Merge branch 'master' into scratch-3.0NeilBrown2008-11-031-1/+1
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| * mapfile: fix bug in testing for /var/run/mdadm/NeilBrown2008-11-031-1/+1
| | | | | | | | | | | | | | | | There was a bug. If /var/run/mdadm/ did not exist as a directory, the map file should have been created in /var/run/mdadm.map, but due to bug it would never get created. Signed-off-by: NeilBrown <neilb@suse.de>
* | Lots of fixes to make incremental assembly of containers work.NeilBrown2008-09-181-3/+5
| | | | | | | | | | | | | | | | So: mdadm -I /dev/whatever will (if appropriate) add whatever to a container, then start any arrays inside the container.
* | Use text_version in map_file rather than major.minor.Neil Brown2008-07-121-14/+13
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* Add new mode: --incrementalNeil Brown2006-12-211-0/+197
--incremental allows arrays to be assembled one device at a time. This is expected to be used with udev.
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