Date: Mon, 6 Jul 2009 23:54:48 +0400 (MSD) From: Dmitry Morozovsky <marck@rinet.ru> To: Kostik Belousov <kostikbel@gmail.com> Cc: Ralf Folkerts <ralf.folkerts@gmx.de>, "Marat N.Afanasyev" <amarat@ksu.ru>, FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org> Subject: Re: bug in ufs? Message-ID: <alpine.BSF.2.00.0907062351100.12926@woozle.rinet.ru> In-Reply-To: <20090706193653.GU2884@deviant.kiev.zoral.com.ua> References: <4A50E947.9020608@ksu.ru> <4A523518.7050008@gmx.de> <4A523849.1070001@ksu.ru> <20090706193653.GU2884@deviant.kiev.zoral.com.ua>
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On Mon, 6 Jul 2009, Kostik Belousov wrote: KB> > >>i have a strange problem with writing data to my ufs2+su filesystem. KB> > >> KB> > >>1. i made a 1T gpt partition on my storage server, and formatted it: KB> > >>newfs -U -m 0 -o time -i 32768 /dev/da1p3a KB> > >> KB> > >>2. i tried to move data from other servers to this filesystem, total KB> > >>size of files is slightly less than 1T KB> > >> KB> > >>3. i encountered a 'No space left on device' while i still have 11G of KB> > >>free space and about 13 million free inodes on the filesystem: KB> > >> KB> > >>#df -ih KB> > >>Filesystem Size Used Avail Capacity iused ifree %iused KB> > >>Mounted on KB> > >>/dev/da1p3a 1.0T 1.0T 11G 99% 20397465 13363173 60% KB> > >>/mnt/45_114 KB> > >> KB> > >>all i want to know is whether this is a bug or a feature? and if such KB> > >>a behavior is well-known, where can i read about it? KB> > >Hi Marat, KB> > > KB> > >just a guess: Are there sparse Files on the Source System that are not KB> > >being detected by the Tool you used to restore the data? If you used KB> > >(bsd)tar, did you try -S? KB> > > KB> > >A while ago I ran into a similar Problem when copying KB> > >Oracle-Database-Files (on Linux, though) and the -S - Option came to KB> > >rescue. KB> > > KB> > >Cheers, KB> > >_ralf_ KB> > KB> > i have a huge amount of small files on the source systems, as you can KB> > see they have about 20 million files and almost each of them is jpeg or KB> > gif. afaik, there are no sparse files at all. KB> > KB> > i still cannot figure out what is it: a free space leak in ufs2+su or KB> > bug in statfs(3), that is used in df, or something else. KB> KB> My guess that it is due to fragmentation. KB> As an experiment, try to create 1-byte file. Does it work on the filesystem KB> in described state ? Doesn't UFS store one-byte (or several-bytes, like PID file) file entirely in the inode, not consuming any data blocks? -- Sincerely, D.Marck [DM5020, MCK-RIPE, DM3-RIPN] [ FreeBSD committer: marck@FreeBSD.org ] ------------------------------------------------------------------------ *** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru *** ------------------------------------------------------------------------
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