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1 | Network Block Device (TCP version) |
2 | ================================== | |
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4 | 1) Overview |
5 | ----------- | |
1da177e4 | 6 | |
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7 | What is it: With this compiled in the kernel (or as a module), Linux |
8 | can use a remote server as one of its block devices. So every time | |
9 | the client computer wants to read, e.g., /dev/nb0, it sends a | |
10 | request over TCP to the server, which will reply with the data read. | |
11 | This can be used for stations with low disk space (or even diskless) | |
12 | to borrow disk space from another computer. | |
13 | Unlike NFS, it is possible to put any filesystem on it, etc. | |
14 | ||
15 | For more information, or to download the nbd-client and nbd-server | |
16 | tools, go to http://nbd.sf.net/. | |
17 | ||
18 | The nbd kernel module need only be installed on the client | |
19 | system, as the nbd-server is completely in userspace. In fact, | |
20 | the nbd-server has been successfully ported to other operating | |
21 | systems, including Windows. | |
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22 | |
23 | A) NBD parameters | |
24 | ----------------- | |
25 | ||
26 | max_part | |
27 | Number of partitions per device (default: 0). | |
28 | ||
29 | nbds_max | |
30 | Number of block devices that should be initialized (default: 16). | |
31 |