On Thu, 2002-04-04 at 22:14, IT3 Stuart Blake Tener, USNR-R wrote:
> Dr. Tweedie, et al.:
>
> I have decided to move to EXT3 from ReiserFS if I can get tail
> packing for EXT3. Last I had asked about it, someone had written some
> sort of patch but it was not official (I think), and was questionable if
> it had worked or not. Can someone tell me the status in the instant? If
> I installed 2.4.18 or a later kernel, would tail packing be part of
> EXT3? How would I turn it on or off?
Why is tailpacking so important for you? I'd rather have a stable and
proven filesystem than 5% extra space (that's what it gives me according
to the reiserfs docs)
> I also have a couple of other questions:
>
> a) How can I revert back to EXT2 from EXT3, since Partition
> Magic does not know how to resize an EXT3 partition.
The manpage of tune2fs gives me this, I'm sure you know what to do with
it:
-O [^]feature[,...]
Set or clear the indicated filesystem features
(options) in the filesystem. More than one
filesystem feature can be cleared or set by sepa
rating features with commas. Filesystem features
prefixed with a caret character ('^') will be
cleared in the filesystem's superblock; filesystem
features without a prefix character or prefixed
with a plus character ('+') will be added to the
filesystem.
The following filesystem features can be set or
cleared using tune2fs:
sparse_super
Limit the number of backup superblocks
to save space on large filesystems.
filetype
Store file type information in direc
tory entries.
has_journal
Create an ext3 journal (as if using the
-j option).
After setting or clearing any filesystem feature,
e2fsck(8) must be run on the filesystem to return
the filesystem to a consistent state.
> b) Someone had posted a command to adjust the percentage of
> "reserve" space that EXT3 sets aside, can someone repost that again?
Manpages rock! The same manpage that gave me the journal-stuff also
gives me:
-m reserved-blocks-percentage
Set the percentage of reserved filesystem blocks.
-r reserved-blocks-count
Set the number of reserved filesystem blocks.
Next time when you mail a mailinglist first try google, man, etc. first?
:)
Regards,
Erik Smit
