On Sat, Jan 30, 2010 at 10:59:34AM +1300, martin f krafft wrote: > notfixed 396570 3.0 > found 396570 3.0.3-2 > fixed 396570 3.1.1-1 > thanks > > It's fixed in 3.1.1: > > mdadm-lab:~# su nobody -c '/sbin/mdadm --remove /dev/md0 /dev/hda1' > mdadm: error opening /dev/md0: Permission denied > mdadm-lab:~# mdadm --version > mdadm - v3.1.1 - 19th November 2009
Still not fixed:
$ mdadm --remove /dev/md0 /dev/sdd1
mdadm: /dev/md0 does not appear to be an md device
$ mdadm --version
mdadm - v3.1.1 - 19th November 2009
I get the same results as you for user nobody.
Didn't look before, but it appears I have rw permission on the md0
device:
$ ll /dev/md0
brw-rw---- 1 root disk 9, 0 Jan 28 02:51 /dev/md0
The open succeeds, the ioctl fails:
open("/dev/md0", O_RDWR|O_LARGEFILE) = 3
fstat64(3, {st_mode=S_IFBLK|0660, st_rdev=makedev(9, 0), ...}) = 0
ioctl(3, 0x800c0910, 0xbfa5a7a4) = -1 EACCES (Permission denied)
close(3) = 0
write(2, "mdadm: /dev/md0 does not appear "..., 51) = 51
exit_group(1) = ?
So I traced it:
Breakpoint 2, main (argc=4, argv=0xbffff4c4) at mdadm.c:989
989 mdfd = open_mddev(devlist->devname, 1);
open_mddev (dev=0xbffff66f "/dev/md0", report_errors=1) at mdopen.c:391
391 {
392 int mdfd = open(dev, O_RDWR);
393 if (mdfd < 0) {
392 int mdfd = open(dev, O_RDWR);
393 if (mdfd < 0) {
399 if (md_get_version(mdfd) <= 0) {
md_get_version (fd=5) at util.c:116
116 {
120 if (fstat(fd, &stb)<0)
fstat (fd=5) at /usr/include/sys/stat.h:469
469 return __fxstat (_STAT_VER, __fd, __statbuf);
md_get_version (fd=5) at util.c:120
120 if (fstat(fd, &stb)<0)
122 if ((S_IFMT&stb.st_mode) != S_IFBLK)
125 if (ioctl(fd, RAID_VERSION, &vers) == 0)
127 if (errno == EACCES)
129 if (major(stb.st_rdev) == MD_MAJOR)
132 }
open_mddev (dev=0xbffff66f "/dev/md0", report_errors=1) at mdopen.c:400
400 close(mdfd);
401 if (report_errors)
402 fprintf(stderr, Name ": %s does not appear to
be "
mdadm: /dev/md0 does not appear to be an md device
407 }
main (argc=4, argv=0xbffff4c4) at mdadm.c:990
990 if (mdfd < 0)
989 mdfd = open_mddev(devlist->devname, 1);
990 if (mdfd < 0)
1264 exit(1);
Program exited with code 01.
> --
> .''`. martin f. krafft <madd...@d.o> Related projects:
> : :' : proud Debian developer http://debiansystem.info
> `. `'` http://people.debian.org/~madduck http://vcs-pkg.org
> `- Debian - when you have better things to do than fixing systems
>
> "a human being should be able to change a diaper, plan an invasion,
> butcher a hog, conn a ship, design a building, write a sonnet,
> balance accounts, build a wall, set a bone, comfort the dying, take
> orders, give orders, cooperate, act alone, solve equations, analyze
> a new problem, pitch manure, program a computer, cook a tasty meal,
> fight efficiently, die gallantly. specialization is for insects."
> -- robert heinlein
--
Rob
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