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Date: Tue, 30 Jul 2002 03:00:09 -0700 (PDT)
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Cc: 
From: Bruce Evans <bde@zeta.org.au>
Subject: Re: bin/41145: newfs core dump (args : -b 262144 -f 32768)
Reply-To: Bruce Evans <bde@zeta.org.au>
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The following reply was made to PR bin/41145; it has been noted by GNATS.

From: Bruce Evans <bde@zeta.org.au>
To: Ying-Chieh Liao <ijliao@csie.nctu.edu.tw>
Cc: FreeBSD-gnats-submit@FreeBSD.ORG
Subject: Re: bin/41145: newfs core dump (args : -b 262144 -f 32768)
Date: Tue, 30 Jul 2002 19:59:22 +1000 (EST)

 On Tue, 30 Jul 2002, Ying-Chieh Liao wrote:
 
 > >Description:
 >
 > We have a new RAID (SCSI-to-IDE, Maxtor 80G x 8, RAID5) on da1
 > when I run newfs with "-b 262144 -f 32768 -m 0", it core-dumped
 > but it's ok with "-b 65536 -f 8192 -m 0"
 >
 > it is strange that I've run newfs -b 262144 on a vinum (80G x 3, RAID1)
 > and everything is ok
 
 There is a kernel limit of MAXBSIZE = 65536, so ufs filesystems with
 a block size larger than 65536 cannot be mounted in FreeBSD.  newfs
 and fsck_ffs use the same limit, so the cannot create or check such
 filesystems.  newfs tends to die trying since it doesn't check for the
 limit being exceeded and uses data structures that depend on it not
 being exceeded.  fsck_ffs tends to just not recognise such filesystems,
 since it checks the limit as part of its sanity check/search for the
 superblock.
 
 Bruce
 

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