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- MKLFS User Commands MKLFS
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- NNAAMMEE
- mklfs - Create an empty LFS file system on a disk partition.
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- SSYYNNOOPPSSIISS
- mmkkllffss [[_o_p_t_i_o_n_s] _d_e_v_i_c_e_N_a_m_e [_p_r_e_f_i_x]
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- OOPPTTIIOONNSS
- _d_e_v_i_c_e_N_a_m_e The device on which the file system should be
- created. This device should be a disk parti-
- tion complete with a disk label that specifies
- its size. WARNING: THE CONTENTS OF THIS DEV-
- ICE ARE OVERWRITTEN BY MKLFS.
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- _p_r_e_f_i_x Name of the file system (its prefix). You
- only need to specify this prefix if you wish
- to have the file system automatically mounted
- by ffssmmoouunntt during the boot sequence. You can
- manually mount the file system under any name
- you want via the pprreeffiixx command.
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- --mmaaxxNNuummCCaacchheeBBlloocckkss _N_u_m_C_a_c_h_e_B_l_o_c_k_s
- _N_u_m_C_a_c_h_e_B_l_o_c_k_s is the maximum number of file
- cache blocks available on the machine. This
- number defaults to the maximum number on the
- machine running the program.
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- --mmaaxxCCaacchheeBBlloocckkssCClleeaanneedd _N_u_m_C_a_c_h_e_B_l_o_c_k_s
- _N_u_m_C_a_c_h_e_B_l_o_c_k_s is the maximum number of file
- cache files that will be reserved for clean-
- ing. A negative value causes mklfs to compute
- this number based on the segment and file
- cache size.
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- --sspprriitteeIIDD _i_d _i_d is the Sprite hostname id specified in the
- superblock. This id is used to inform a
- machine of its name at boot time. It defaults
- to the Sprite ID of the machine running mklfs.
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- --mmaaxxUUttiilliizzaattiioonn _U_t_i_l_i_z_a_t_i_o_n
- _U_t_i_l_i_z_a_t_i_o_n is the maximum fraction of the
- disk space usable by the file system.
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- --mmaaxxDDeesscc _N_u_m_D_e_s_c
- _N_u_m_D_e_s_c is the maximum number of descriptors
- available in the file system. A negative value
- causes mklfs to compute this number based on
- the disk size.
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- --sseeggAAlliiggnnmmeenntt _A_l_i_g_n_m_e_n_t
- _A_l_i_g_n_m_e_n_t is the alignment in bytes where the
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- MKLFS User Commands MKLFS
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- first segment should start.
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- --bblloocckkSSiizzee _s_i_z_e
- _s_i_z_e is block size of the file system in
- bytes. The block size is the minimum unit of
- allocation and should be a multiple of the
- device's sector size.
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- --sseeggmmeennttSSiizzee _s_i_z_e
- _s_i_z_e is the segment size of the file system in
- bytes. The segment size should be a multiple
- of the block size.
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- --nnuummSSeeggmmeennttss _N_u_m_S_e_g_m_e_n_t_s
- _N_u_m_S_e_g_m_e_n_t_s is the number of segments to use
- on the file system. A negative value causes
- mklfs to compute the number of segments based
- on the size of the disk.
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- --ddeessccBBlloocckkSSiizzee _s_i_z_e
- _s_i_z_e is the size in bytes of the blocks used
- to store file descriptors in the log. This
- number should be a multiple of the block size.
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- --ddeessccMMaappBBlloocckkSSiizzee _s_i_z_e
- _s_i_z_e is the block size in byte used for the
- descriptor map data structure. This number
- should be a multiple of the block size.
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- --uussaaggeeAArrrraayyBBlloocckkSSiizzee _s_i_z_e
- _s_i_z_e is the block size in byte used for the
- segment usage array data structure. This
- number should be a multiple of the block size.
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- --vveerrbboossee Print the values used for the parameters.
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- _________________________________________________________________
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- DDEESSCCRRIIPPTTIIOONN
- MMkkllffss will create an empty Sprite LFS filesystem on a disk
- partition. The filesystem is created to use the entire disk
- partition and initialized to look like an Sprite LFS file
- system containing a root directory with a lost+found direc-
- tory. Care should be taken because anything already present
- on the partition will be overwritten.
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- MMkkllffss has a large number of options that control the maximum
- limits of various file system data structures, the charac-
- teristic of the machine that will the device for the file
- system, and the disk layout format the file system. All
- options except the deviceName specifier are optional and
- default to reasonable values if not specified. If the pro-
- gram is being run on a machine other than the one that the
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- machine to which the disk will be attached from, the options
- that describe the machine characteristic will need to be
- specified.
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- KKEEYYWWOORRDDSS
- filesystem, LFS, sprite
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