Date: Wed, 21 Dec 2011 15:12:45 -0800 From: Kirk McKusick <mckusick@mckusick.com> To: =?ISO-8859-1?Q?Olivier_Cochard=2DLabb=E9?= <olivier@cochard.me> Cc: freebsd-fs@freebsd.org, Dieter BSD <dieterbsd@engineer.com> Subject: Re: Maximum blocksize for FFS? Message-ID: <201112212312.pBLNCj2a054427@chez.mckusick.com> In-Reply-To: <CA%2Bq%2BTcrZeO6-Xj32aXpwP1HTJv0BrUdRYmjN5=3Vw54i4rs92A@mail.gmail.com>
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> From: =?ISO-8859-1?Q?Olivier_Cochard=2DLabb=E9?= <olivier@cochard.me> > Date: Wed, 14 Dec 2011 12:50:05 +0100 > Subject: Re: Maximum blocksize for FFS? > To: Kirk McKusick <mckusick@mckusick.com> > Cc: Dieter BSD <dieterbsd@engineer.com>, freebsd-fs@freebsd.org > X-ASK-Info: Message Queued (2011/12/14 03:50:37) > X-ASK-Info: Confirmed by User (2011/12/14 04:45:07) > > On Tue, Dec 13, 2011 at 7:18 PM, Kirk McKusick <mckusick@mckusick.com> wrote: > > The default blocksize in FreeBSD 9.0 is 32K/4K. We have been > > running with this size in -current for a almost a year with no > > reported problems. > > Hi, > > There is a reported problem: > The number of inode was divided by two with FreeBSD 9.0 (PR > bin/162659) and this create some problems because "the number of > fragments per inode (NFPI) was not adapted to the new default block > size" (Bruce Evans'explanation [1]). > > Regards, > > Olivier > > [1] http://lists.freebsd.org/pipermail/freebsd-bugs/2011-December/046713.html Thanks for bringing your report to my attention. I have applied the suggested change (reducing NFPI from 4 to 2) so as to keep the default number of inodes for a 32K/4K filesystem the same as were created on a 16K/2K filesystem. Kirk McKusick
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