pmempool-create - Create Persistent Memory Pool of specified type
pmempool create [<options>] [<type>] [<bsize>] <file>
The pmempool invoked with create command creates a pool file of specified type. Depending on a pool type it is possible to provide more properties of pool.
Valid pool types are: blk, log and obj which stands for pmemblk*,* pmemlog and pmemobj pools respectively. By default the pool file is created with minimum allowed size for specified pool type. The minimum sizes for blk, log and obj pool types are PMEMBLK_MIN_POOL, PMEMLOG_MIN_POOL and PMEMOBJ_MIN_POOL respectively. See libpmemblk(3), libpmemlog(3) and libpmemobj(3) for details.
For pmemblk pool type block size <bsize> is a required argument.
In order to set custom size of pool use -s option, or use -M option to create a pool of maximum available size on underlying file system.
The size argument may be passed in format that permits only the upper-case character for byte - B as specified in IEC 80000-13, IEEE 1541 and the Metric Interchange Format. Standards accept SI units with obligatory B - kB, MB, GB ... which means multiplier by 1000 and IEC units with optional "iB" - KiB, MiB, GiB, ..., K, M, G, ... - which means multiplier by 1024.
-s, --size <size>
Size of pool file.
Set size of pool to available space of underlying file system.
-m, --mode <octal>
Set permissions to <octal> (the default is 0664).
-i, --inherit <file>
Create a new pool of the same size and other properties as <file>.
Increase verbosity level.
Display help message and exit.
By default when creating a pmem blk pool, the BTT layout is not written until the first write operation of block entry is performed. Using -w option you can force writing BTT layout by writing zero data to specified block number. By default the write operation is performed to block number 0. Please refer to libpmemblk(3) for details.
Force writing BTT layout by performing write operation to block number zero.
By default when creating a pmem obj pool, the layout name provided to the libpmemobj library is an empty string. Please refer to libpmemobj(3) for details.
-l, --layout <layout>
Layout name of the pmemobj pool.
# Create a blk pool file of minimum allowed size and block size 512 bytes
# Create a log pool file of maximum allowed size
# Create a blk pool file of size 4G, block size 1K and write BTT layout using write operation to the block number 1
# Create an obj pool file of minimum allowed size and layout 'my_layout'
# Create a pool file based on pool.log file
libpmemblk(3) libpmemlog(3) pmempool(1)
Part of the pmempool(1) suite.
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