Hi,
>> I found out that you cannot mount an exported squash fs. The exports(5) fsid=
>> parameter does not help it [like it did with unionfs].
>
>The exports(5) man page says fsid=num is necessary for filesystems on
>non-block devices - I don't know whether this includes loopback
>filesystems. Have you tried exporting a Squashfs filesystem mounted
>on a real block device?
Loopback is a real block device, and no, fsid= does not help it. I have talked
with the unionfs people, because it works for them. After a short flash of
idea and comparison, it turns out that squashfs is missing
sb->s_export->get_parent (the only requirement as it seems). Includes that you
have sb->s_export non-null, of course. sb->s_export can be set within
fill_super().
>I've never tried to export a Squashfs filesystem, and so I don't know
>if it works. If it doesn't, I would say it is because Squashfs (like
>Cramfs) doesn't store correct nlink information for directories.
>
>The next release does store nlink information, has support for > 4GB
>files/filesystems, and other nice improvements. I'm hoping to release
>an alpha release soon.
FTR, I currently cheated by using
`mount -t unionfs -o dirs=/squash=ro none /squash` to get the export working.
Jan Engelhardt
--
| Alphagate Systems, http://alphagate.hopto.org/
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
| |
 |