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Pull in change from njoly@ in -current

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riz 2010-12-20 00:44:53 +00:00
parent 648ff57789
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1 changed files with 6 additions and 22 deletions
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sbin/resize_ffs/resize_ffs.8
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@ -1,4 +1,4 @@
.\" $NetBSD: resize_ffs.8,v 1.7 2010/12/19 23:22:46 njoly Exp $ .\" $NetBSD: resize_ffs.8,v 1.8 2010/12/20 00:44:53 riz Exp $
.\" .\"
.\" As its sole author, I explicitly place this man page in the public .\" As its sole author, I explicitly place this man page in the public
.\" domain. Anyone may use it in any way for any purpose (though I would .\" domain. Anyone may use it in any way for any purpose (though I would
@ -9,12 +9,12 @@
.\" X Against HTML mouse@rodents.montreal.qc.ca .\" X Against HTML mouse@rodents.montreal.qc.ca
.\" / \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B .\" / \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B
.\" .\"
.Dd October 30, 2010 .Dd December 18, 2010
.Dt RESIZE_FFS 8 .Dt RESIZE_FFS 8
.Os .Os
.Sh NAME .Sh NAME
.Nm resize_ffs .Nm resize_ffs
.Nd resize an on-disk file system .Nd resize a file system on disk or in a file
.Sh SYNOPSIS .Sh SYNOPSIS
.Nm .Nm
.Op Fl y .Op Fl y
@ -24,7 +24,7 @@
.Nm .Nm
resizes a file system on disk. resizes a file system on disk.
.Ar file-system-raw-device .Ar file-system-raw-device
is the name of the raw disk device where the file system resides; is the name of the raw disk device or file where the file system resides;
(Sectors are almost always 512 bytes, and (Sectors are almost always 512 bytes, and
.Nm .Nm
can both grow and shrink file systems. can both grow and shrink file systems.
@ -66,10 +66,6 @@ Disable sanity questions made by
.Nm . .Nm .
.El .El
.Sh WARNING .Sh WARNING
.Nm
should still be considered experimental.
It still needs to be validated with a rigorous regression test
suite.
.Em Interrupting .Em Interrupting
.Nm .Nm
.Em "may leave your file system in an inconsistent state and require a" .Em "may leave your file system in an inconsistent state and require a"
@ -88,16 +84,7 @@ data.
It's probably wise to It's probably wise to
.Xr fsck 8 .Xr fsck 8
the file system before and after, just to be safe. the file system before and after, just to be safe.
.\" Remove this when (if) fsck gets fixed. You should be aware that just because
.Pp
There is a bug somewhere in
.Xr fsck 8 ;
it does not check certain data structures enough.
A past version of this program had a bug that produced corrupted
rotation layout summary tables, which would panic the kernel.
This bug is believed fixed, and there are currently no
known bugs in the program.
However, you should be aware that just because
.Xr fsck 8 .Xr fsck 8
is happy with the file system does not mean it is intact. is happy with the file system does not mean it is intact.
.Sh EXIT STATUS .Sh EXIT STATUS
@ -133,9 +120,6 @@ layout bug referred to in the
.Sx WARNING .Sx WARNING
section above. section above.
.Sh BUGS .Sh BUGS
Has not been tested and probably won't work on opposite-endian file
systems.
.Pp
Can fail to shrink a file system when there actually is enough space, Can fail to shrink a file system when there actually is enough space,
because it does not distinguish between a block allocated as a block because it does not distinguish between a block allocated as a block
and a block fully occupied by two or more frags. and a block fully occupied by two or more frags.
@ -146,4 +130,4 @@ when the new size is extremely close to the minimum possible.
Has no intelligence whatever when it comes to allocating blocks to copy Has no intelligence whatever when it comes to allocating blocks to copy
data into when shrinking. data into when shrinking.
.Pp .Pp
Doesn't work with FFSv2 file systems. Doesn't shrink FFSv2 file systems.