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git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1740 d57e44dd-8a1f-0410-8b47-8ef2f437770f
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Vladislav Bolkhovitin
2010-06-04 12:35:16 +00:00
parent 3ad3d2e3e7
commit bab336f5d5
4 changed files with 9 additions and 23 deletions
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10
www/comparison.html
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@@ -169,13 +169,13 @@ ORDERED commands</b></td> <td> + </td> <td> + </td> <td> -, <br> data
</tr>
<tr>
<td align="left"><b>Persistent Reservations <br>
<small> (Windows 2008 clustering / RHEL5 I/O fencing)</small></b></td> <td> Under development
in "pr" SVN branch</td> <td> Under testing
(limited functionality
implemented)</td> <td> - </td> <td> Under testing</td>
<small> (Windows 2008 clustering / RHEL5 I/O fencing)</small></b></td> <td> Under testing
</td> <td> + <br> (limited
functionality
implemented)</td> <td> - </td> <td> + </td>
</tr>
<tr>
<td align="left"><b>ALUA</b></td> <td> - </td> <td> - </td> <td> - </td> <td> Under testing</td>
<td align="left"><b>ALUA</b></td> <td> - </td> <td> - </td> <td> - </td> <td> + </td>
</tr>
<tr>
<td align="left"><b>Failover Clustering</b></td> <td> + </td> <td> ? </td> <td> + </td> <td> + </td>

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www/contributing.html
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@@ -99,22 +99,6 @@
page cache, namely, locking issues related to it. They should be carefully
investigated.</p>
<A NAME="PR"></A><h3>Persistent reservations</h3>
<p>Support for PERSISTENT RESERVE IN and PERSISTENT RESERVE OUT is required to
work in many cluster environments, e.g. Windows 2003 Cluster.</p>
<p>For implementation you should use scst_reserve_local() and
scst_release_local() as a base. You should store all reservation keys
for in files in /var/scst, one file per device
(it would allow to eliminate additional locking), like
/var/scst/boot_disk for device "boot_disk" and load them in memory, when
device would be registered.</p>
<p>In the first version it can be done for virtual
devices only and reject PERSISTENT RESERVE IN and OUT commands for
pass-through devices with "COMMAND NOT SUPPORTED" sense data.</p>
<A NAME="DYN_FLOW"></A><h3>Dynamic I/O flow control</h3>
<p>At the moment, if an initiator or several initiators simultaneously send to

3
www/index.html
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@@ -39,7 +39,8 @@
Linux kernel as well as between Linux kernel and storage backend
handlers, connecting target drivers with real or emulated storage backend.
<p>SCST allows creation of sophisticated storage devices, which provide advanced
<p>SCST allows creation of sophisticated storage devices from any Linux box. Those
devices can provide advanced
functionality, like <strong>replication</strong>, <strong>thin provisioning</strong>,
<strong>deduplication</strong>, <strong>high availability</strong>,
<strong>automatic backup</strong>, etc. Another class of such devices

3
www/iscsi-scst/index.html
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@@ -76,7 +76,8 @@
</p>
<ul>
<li><span>Improved performance. In some cases improvement >100%.</span></li>
<li><span>Improved performance. In some cases improvement >100%. Especially it is noticeable
with several initiators accessing the same device.</span></li>
<li><span>Pass-through mode with one to many relationship, when multiple initiators can connect to
exported local SCSI devices. For instance, in this mode you can safely export your parallel