Re: Windows Logical Disk Manager error

[Marcin Gibuła]

> I would not advise you to use volume6 without the md driver.  You are
> then missing the last 32kb off the end and you never know when they

Well, I can't even build it... mdadm failes and driver complains with
md: Dev sda2 smaller than chunk_size: 0k < 32k

Different chunk size doesn't make any difference.

> direction.  Fortunately you can fix this case by using the "--rounding="
> parameter to mdadm.  So if you have a cluster size of 4k try
> --rounding=4.  (If you don't know your cluster size enable debugging in
> the ntfs driver and then do the mount and "dmesg | grep cluster_size"
> will tell you the answer.  To enable debugging in the driver it must be
> compiled with debugging enabled and you need to, as root, do: "echo 1 >
> /proc/sys/fs/ntfs-debug" after loading the module if modular and before
> doing the mount command.)

According to ntfs driver output my cluster size is indeed 4kb, but it still 
failes to read mounted fs.

Error is now:
NTFS-fs error (device md1): ntfs_readdir(): Actual VCN (0x20006500680054) of 
index buffer is different from expected VCN (0x4). Directory inode 0x5 is 
corrupt or driver bug.

Oh, and my system (and kernel) is x86-64 if it matters.

> "chkdsk /f" on it fixed it in that particular case (even though chkdsk
> reported no errors, apparently it fixed them without telling anyone!).
> So this is worth trying before you start messing around with --rounding=
> and mdadm.

I've tried that. No effect though.

-- 
mg
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