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scoutfs: update README.md for metadev_path

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Update the README.md introduction to scoutfs to mention the need for and
use of metadata and data block devices.

Signed-off-by: Zach Brown <zab@versity.com>
This commit is contained in:
Zach Brown
2020-11-19 11:20:13 -08:00
committed by Zach Brown
parent 9f151fde92
commit 08eb75c508
1 changed files with 7 additions and 7 deletions
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14
kmod/README.md
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@@ -62,17 +62,17 @@ help on the mailing list.**
The requirements for running scoutfs on a small cluster are:
1. One or more nodes running x86-64 CentOS/RHEL 7.4 (or 7.3)
2. Access to a single shared block device
2. Access to two shared block devices
3. IPv4 connectivity between the nodes
The steps for getting scoutfs mounted and operational are:
1. Get the kernel module running on the nodes
2. Make a new filesystem on the device with the userspace utilities
3. Mount the device on all the nodes
2. Make a new filesystem on the devices with the userspace utilities
3. Mount the devices on all the nodes
In this example we run all of these commands on three nodes. The block
device name is the same on all the nodes.
In this example we run all of these commands on three nodes. The names
of the block devices are the same on all the nodes.
1. Get the Kernel Module and Userspace Binaries
@@ -103,7 +103,7 @@ device name is the same on all the nodes.
quorum for the system to function.
```shell
scoutfs mkfs -Q 2 /dev/shared_block_device
scoutfs mkfs -Q 2 /dev/meta_dev /dev/data_dev
```
3. Mount the Filesystem
@@ -114,7 +114,7 @@ device name is the same on all the nodes.
```shell
mkdir /mnt/scoutfs
mount -t scoutfs -o server_addr=$NODE_ADDR /dev/shared_block_device /mnt/scoutfs
mount -t scoutfs -o server_addr=$NODE_ADDR,metadev_path=/dev/meta_dev /dev/data_dev /mnt/scoutfs
```
4. For Kicks, Observe the Metadata Change Index