On Monday April 24, [EMAIL PROTECTED] wrote:
> # mdadm --grow /dev/md_d1 --raid-devices=3 --backup-file backupfile
> mdadm: Need to backup 128K of critical section..
> mdadm: /dev/md_d1: Cannot get array details from sysfs
>
> Strace shows that it's trying to access
> "/sys/block/md_d4/md/component_size".
>
> Why is this?
Because I didn't test my code properly :-(
Following patch should fix it.
Re: the recovery speed problem: I would try dding from one drive to
the other and see what sort of speed you get then:
dd if=/dev/sda of=/dev/sdb bs=1024k count=1000
or something like that.
Thanks,
NeilBrown
Signed-off-by: Neil Brown <[EMAIL PROTECTED]>
### Diffstat output
./sysfs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff ./sysfs.c~current~ ./sysfs.c
--- ./sysfs.c~current~ 2006-03-14 15:33:12.000000000 +1100
+++ ./sysfs.c 2006-04-24 07:56:56.000000000 +1000
@@ -206,7 +206,7 @@ unsigned long long get_component_size(in
minor(stb.st_rdev));
else
sprintf(fname, "/sys/block/md_d%d/md/component_size",
- minor(stb.st_rdev)/16);
+ minor(stb.st_rdev)/64);
fd = open(fname, O_RDONLY);
if (fd < 0)
return 0;
-
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