barkdoll@cattell.psych.upenn.edu (06/05/91)
While preparing to set up (newfs -Nv /dev/rsd1h) a new file system i
encountered the following message:
mkfs -N /dev/rsd1h 15876 36 9 8192 1024 16 10 60 2048 t 0 0 8 7
Warning: inode blocks/cyl group (32) >= data blocks (20) in last
cylinder group. This implies 324 sector(s) cannot be allocated.
/dev/rsd1h: 15552 sectors in 48 cylinders of 9 tracks, 36 sectors
8.0MB in 3 cyl groups (16 c/g, 2.65MB/g, 1216 i/g)
super-block backups (for fsck -b #) at:
32, 5264, 10496,
This is on a new 207MB disk from Sun which I reformatted with no
problems, no defects. I was able to set up sd1a, sd1g with no such
warning. sd1h *should* have about 12.9 MB rather than 8.0 MB, the
difference being related to the sectors which cannot be allocated, I
assume. I wasn't able to find an error message like this in the
manuals. Does anyone know:
(1) what the error means
(2) what significance it has other than lost disk space
(3) how to remedy the problem?
Thanks very much.
--
Edwin Barkdoll
barkdoll@cattell.psych.upenn.edubarkdoll@cattell.psych.upenn.edu (06/05/91)
I wrote: > While preparing to set up (newfs -Nv /dev/rsd1h) a new file system i > encountered the following message: > > mkfs -N /dev/rsd1h 15876 36 9 8192 1024 16 10 60 2048 t 0 0 8 7 > Warning: inode blocks/cyl group (32) >= data blocks (20) in last > cylinder group. This implies 324 sector(s) cannot be allocated. > > [blah, blah, blah] Well, I resolved the problem -- hopefully this will come out the same time as the original post so no one will respond unnecessarily. Thanks anyway. -- Edwin Barkdoll barkdoll@cattell.psych.upenn.edu
carre@lapin.ens-lyon.fr (Giles Carre) (06/28/91)
In article <3329@brchh104.bnr.ca>, barkdoll@cattell.psych.upenn.edu writes: |> While preparing to set up (newfs -Nv /dev/rsd1h) a new file system i |> encountered the following message: |> |> mkfs -N /dev/rsd1h 15876 36 9 8192 1024 16 10 60 2048 t 0 0 8 7 |> Warning: inode blocks/cyl group (32) >= data blocks (20) in last |> cylinder group. This implies 324 sector(s) cannot be allocated. |> /dev/rsd1h: 15552 sectors in 48 cylinders of 9 tracks, 36 sectors |> 8.0MB in 3 cyl groups (16 c/g, 2.65MB/g, 1216 i/g) |> super-block backups (for fsck -b #) at: |> 32, 5264, 10496, |> It is a warning, not an error. The unallocated sectors are not bad, but only not used. On a Sun 207 MB internal disk, you have 324 sectors/cylinder (9 heads x 36 sector/track). On a 15876 sectors partition, you have 49 entire cylinders. A BSD file system is made of cylinder groups, each of them whith n cylinder (default is n = 16 cylinders). So, here, you can have 3 cylinder groups (3 x 16 + 1 = 49 cyl). The last cylinder is lost for Unix file system. On this disk, it's impossible to use all the 1254 cylinders with the default value of 16 cylinders/group. -- Giles Carre Ecole Normale Superieure 46, allee d'Italie 69364 LYON CEDEX 07 FRANCE Phone : (+33) 72 72 84 12 EARN/BITNET : carre@frensl61.bitnet Fax : (+33) 72 72 80 80 FNET/EUNET/UUNET : carre@ensl.ens-lyon.fr