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Update README.md #38

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33 changes: 32 additions & 1 deletion README.md
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Expand Up @@ -112,8 +112,39 @@ sudo ./use_dax.sh unbind
##### 3. Setup storage size
This step requires rebuilding of Libfs and KernFS.
~~~
TODO: Some instructions to setup storage size (by a script or manually)
TODO: Some instructions to setup storage size (by a script )
~~~
Step 3 is setup the location of devieces in the source code.

In Step 2 of Running Strata, the pmem mapping will be changed to dax mapping

which maps pmem to /dev/dax*

In Step 4 of Running Strata, nvme mapping will be changed into uio mapping

which maps nvme0n1 to /dev/uio*

The dev path is defined in code strata/libfs/src/storage/storage.c

char *g_dev_path[] = {
(char *)"unused",
(char *)"/dev/dax0.0",
(char *)"/backup/mlfs_ssd",
(char *)"/backup/mlfs_hdd",
(char *)"/dev/dax1.0",
(char *)"/dev/dax2.0",
};
what you have to do is change it to

char *g_dev_path[] = {
(char *)"unused",
(char *)"/dev/dax0.0",
(char *)"/dev/uio0",
(char *)"/backup/mlfs_hdd",
(char *)"/dev/dax1.0",
(char *)"/dev/dax2.0",
};
and then repeat steps 4 and 5 of Building Strata

##### 4. Setup UIO for SPDK
~~~
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