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Grow: don't hold array open while waiting for reshape. 

If we will need to change array level when a reshape completes, a copy
of mdadm waits in the background.
Currently this copy hold the device (/dev/mdX) open.  This prevents
the array from being stopped.

So close the file descriptor and re-open after the reshape completes.

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown 2013-07-24 12:21:10 +10:00
parent 419e018284
commit 3377ee4248
1 changed files with 4 additions and 2 deletions
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6
Grow.c
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@ -3086,9 +3086,11 @@ static int reshape_array(char *container, int fd, char *devname,
map_fork();
break;
}
close(fd);
wait_reshape(sra);
impose_level(fd, info->new_level, devname, verbose);
fd = open_dev(sra->sys_name);
if (fd >= 0)
impose_level(fd, info->new_level, devname, verbose);
return 0;
case 1: /* Couldn't set data_offset, try the old way */
if (data_offset != INVALID_SECTORS) {