Date: Fri, 6 Dec 2002 18:06:03 +0200
From: Ruslan Ermilov <[EMAIL PROTECTED]>
To: Petr Holub <[EMAIL PROTECTED]>, Matt Dillon <[EMAIL PROTECTED]>
Cc: [EMAIL PROTECTED], [EMAIL PROTECTED]
Subject: Re: UFS1 created by 5.0 is incompatible with 4.0's?
X-ASK-Info: Whitelist match
On Fri, Dec 06, 2002 at 01:59:11PM +0100, Petr Holub wrote:
> Hi,
>=20
> > While testing the 4.0 -> 5.0 upgrade path, I've created (under
> > 5.0) a UFS1 partition and installed 4.0 onto it. After booting
> > the 4.0 from it, kernel complained about ``numdirs is zero, try
> > using an alternate superblock'' for / partition -- I've tried
> > what it suggests (by fsck -b 32, etc.) but the result was always
> > the same -- the file system was marked dirty and only read-only
> > usable. After rebooting in 5.0, this file system was similarly
> > unusable. Is this a bug or a feature?
>=20
> I've discussed this issue with Poul-Henning Kamp. You need fsck
> from at least 4.7.
>=20
Is this handled by fsck/setup.c,v 1.17.2.4 commit?
: revision 1.17.2.4
: date: 2002/06/24 05:10:41; author: dillon; state: Exp; lines: +26 -56
: MFC 1.30. Check only the fields we know should be the same between the
: primary and alternate superblocks, so fsck doesn't barf on new features
: added to UFS in later releases.
:=20
: Submitted by: mckusick
Cheers,
--=20
Ruslan Ermilov Sysadmin and DBA,
[EMAIL PROTECTED] Sunbay Software AG,
[EMAIL PROTECTED] FreeBSD committer,
+380.652.512.251 Simferopol, Ukraine
http://www.FreeBSD.org The Power To Serve
http://www.oracle.com Enabling The Information Age
If the 1.17.2.4 commit does not solve your problem, try the following
patch that I made to the 5.0 fsck. If it solves your problem, then it
should probably be MFC'ed.
Kirk McKusick
Index: sbin/fsck_ffs/setup.c
===================================================================
RCS file: /usr/ncvs/src/sbin/fsck_ffs/setup.c,v
retrieving revision 1.41
diff -c -r1.41 setup.c
*** setup.c 2002/11/27 02:18:57 1.41
--- setup.c 2002/12/04 23:13:18
***************
*** 258,269 ****
(unsigned)(sizeof(struct inostatlist) * (sblock.fs_ncg)));
goto badsb;
}
! numdirs = sblock.fs_cstotal.cs_ndir;
dirhash = numdirs;
- if (numdirs == 0) {
- printf("numdirs is zero, try using an alternate superblock\n");
- goto badsb;
- }
inplast = 0;
listmax = numdirs + 10;
inpsort = (struct inoinfo **)calloc((unsigned)listmax,
--- 258,265 ----
(unsigned)(sizeof(struct inostatlist) * (sblock.fs_ncg)));
goto badsb;
}
! numdirs = MAX(sblock.fs_cstotal.cs_ndir, 128);
dirhash = numdirs;
inplast = 0;
listmax = numdirs + 10;
inpsort = (struct inoinfo **)calloc((unsigned)listmax,
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