Filesystems in NetBSD

Discussion:

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sergei karhof

2012-08-05 20:58:09 UTC

Hi, I am new to NetBSD, so forgive me if this question has been asked
many times.

Which are the better supported filesystems in NetBSD, and what is
their current status (practical usability)? I am especially interested
in filesystems like BtrFS and ZFS. In case these two are not yet
supported, what NetBSD-supported filesystem comes closest to them?

Thanks

Serg

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Lukas Laukamp

2012-08-05 21:43:39 UTC

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Post by sergei karhof
Hi, I am new to NetBSD, so forgive me if this question has been asked
many times.
Which are the better supported filesystems in NetBSD, and what is
their current status (practical usability)? I am especially interested
in filesystems like BtrFS and ZFS. In case these two are not yet
supported, what NetBSD-supported filesystem comes closest to them?
Thanks
Serg

Hello Sergei,

a ZFS port is available on NetBSD but it's in a beta state. See this
page for further information: http://wiki.netbsd.org/users/haad/porting_zfs/

Best Regards

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sergei karhof

2012-08-05 23:13:41 UTC

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Post by Lukas Laukamp

Hello Sergei,
a ZFS port is available on NetBSD but it's in a beta state. See this page
for further information: http://wiki.netbsd.org/users/haad/porting_zfs/
Best Regards

Thanks, Lukas.

For the time being, I am thinking that until ZFS or BtrFS are fully
tested and ready on NetBSD, it may be wiser to stick with a filesystem
that is ready and mature. So I am turning my attention to NetBSD's
native filesystem.

Can someone tell me if the native NetBSD filesystem has a good support
for Extended Attributes? In particular, what are the limitations to
the maximum size that can be taken up by the extended attributes of a
file?

Thanks

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Lukas Laukamp

2012-08-06 00:23:07 UTC

Permalink

Post by sergei karhof

Post by Lukas Laukamp

Hello Sergei,
a ZFS port is available on NetBSD but it's in a beta state. See this page
for further information: http://wiki.netbsd.org/users/haad/porting_zfs/
Best Regards

Thanks, Lukas.
For the time being, I am thinking that until ZFS or BtrFS are fully
tested and ready on NetBSD, it may be wiser to stick with a filesystem
that is ready and mature. So I am turning my attention to NetBSD's
native filesystem.
Can someone tell me if the native NetBSD filesystem has a good support
for Extended Attributes? In particular, what are the limitations to
the maximum size that can be taken up by the extended attributes of a
file?
Thanks

Hi,

I would simply test ZFS. I think that a BtrFS port will not appear
because it's only designed for Linux. It's simply something like a ZFS
paradigmatic coded filesystem under a GPL license (ZFS would never come
into the Linux kernel because of the license). FreeBSD has already made
very but experiences with ZFS (look at projects like FreeNAS) or the
FUSE project also implemented a good working way to use ZFS. ZFS it self
is a good filesystem with a great codebase and so I would give it a chance.

To find out more about the features of the NetBSD standard filesystem
(it's UFS2 like on all the other BSDs) you can look here:
http://en.wikipedia.org/wiki/Unix_File_System

Best Regards

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Thomas Mueller

2012-08-06 04:06:39 UTC

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I'm curious about LFS, seeing it in NetBSD but nowhere else that I can find.

I see BtrFS being introduced in Linux but haven't heard of any attempt so far to introduce BtrFS to the BSDs.

ZFS has been introduced to FreeBSD, but it takes some time to get the bugs out; that figures to be the case also in NetBSD.

I know Linux can run on FAT32, one example being when the System Rescue CD (sysresccd.org) is written to a USB stick.

This makes me curious as to whether NetBSD can run from FAT16 or FAT32, though surely FFSv1 or FFSv2 would be better.

Linux can also run from XFS, I don't think any BSD is ready for that.

DragonFlyBSD has a file system for large disks or partitions, Hammer, but I don't know of Hammer being used in any other OS.

Tom

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