准备升级

本节介绍了如何准备升级。

升级注意事项

当您决定升级文件系统所用的主机系统时，请注意以下事项：

• 在现有主机仍在运行时迁移到新主机。这样，您可以利用应用程序来安装、配置和测试新的硬件平台。

• 转移到新的主机系统相当于首次安装 Sun QFS 软件。在 SAM-QFS 归档环境中，您需要重新安装该软件并更新配置文件。这些文件包括 mcf 文件和 /etc/opt/SUNWsamfs/inquiry.conf 文件。此外，需要将现有的 archiver.cmd 和 defaults.conf 文件复制到新的系统，以及配置系统日志等等。

• 关闭旧主机系统电源前，请确定您现有的备份副本是否完整无缺。您可能希望捕获新的转储文件，以便在新服务器上重新创建文件系统。有关创建转储文件的更多信息，请参见设置转储文件。

• 如果您需要升级 Oracle Solaris OS 以支持最新产品，请参见升级 Oracle Solaris OS。

共享环境支持滚动升级

您可以在不使文件系统的其他部分停机的情况下升级各个共享文件系统客户机。要执行滚动升级，环境中必须包含一个主元数据服务器和至少一个潜在元数据服务器。

如何在共享环境中执行滚动升级

1. 升级潜在的元数据服务器。
2. 故障转移到潜在的元数据服务器。
3. 升级主元数据服务器。
4. 故障转移到主元数据服务器。
5. 升级客户机。

保存升级信息

如果准备在环境中添加或更改磁盘、控制器或其他设备，在 mcf 文件中更正或重新生成所有文件系统描述可能比较困难。做出这些更改之后，使用 samfsconfig 命令可帮助您生成有关文件系统和文件系统组件的信息。

samfsconfig 命令可以检查您指定的设备，确定其中是否有存在 Sun QFS 超级块的设备，并将此信息输出到 stdout。它使用发现的超级块上的信息，并将设备汇聚成与 mcf 文件类似的格式。您可以保存这些格式，并加以编辑，以重新创建损坏的、缺少的或错误的 mcf 文件。

该命令可检索基础设备（文件系统本身）的系列集编号、文件系统类型（ma 或 ms）以及文件系统是否为共享文件系统。

异常情形通过以下符号之一进行标记：

• 井号 (#)，表示系列集信息不完整。

• 大于号 (>)，表示有多个设备名称引用了同一个文件系统元素。

以下示例显示了 samfsconfig 命令的输出。

在此示例中，系统管理员已将设备名称列表放入文件。这些设备名称是指系统环境中未计算在内的设备，因此也是指系统管理员希望对其进行检查以用于系列集的设备。以下代码示例所示的结果显示了系列集的一些旧片断和几个完整实例。

示例 10-1 samfsconfig 命令的输出

mn# samfsconfig -v *`cat /tmp/dev_files'*

Device `/dev/dsk/c5t10d0s0' has a SAM-FS superblock.
Couldn't open '/dev/dsk/c5t10d0s1': I/O error
Device '/dev/dsk/c5t10d0s3' has a SAM-FS superblock.
Device '/dev/dsk/c5t10d0s4' doesn't have a SAM-FS superblock (SBLK).
Device '/dev/dsk/c5t10d0s5' doesn't have a SAM-FS superblock (SBLK).
Device '/dev/dsk/c5t10d0s6' doesn't have a SAM-FS superblock (SBLK).
Device '/dev/dsk/c5t10d0s7' doesn't have a SAM-FS superblock (SBLK).
Device '/dev/dsk/c5t11d0s0' has a SAM-FS superblock.
Couldn't open '/dev/dsk/c5t11d0s1': I/O error
Device '/dev/dsk/c5t11d0s3' has a SAM-FS superblock.
Device '/dev/dsk/c5t11d0s4' doesn't have a SAM-FS superblock (SBLK).
Device '/dev/dsk/c5t11d0s5' doesn't have a SAM-FS superblock (SBLK).
Device '/dev/dsk/c5t11d0s6' doesn't have a SAM-FS superblock (SBLK).
Device '/dev/dsk/c5t11d0s7' doesn't have a SAM-FS superblock (SBLK).
Device '/dev/dsk/c5t12d0s0' has a SAM-FS superblock.
Couldn't open '/dev/dsk/c5t12d0s1': I/O error
Device '/dev/dsk/c5t12d0s3' has a SAM-FS superblock.
Device '/dev/dsk/c5t12d0s4' doesn't have a SAM-FS superblock (SBLK).
Device '/dev/dsk/c5t12d0s5' doesn't have a SAM-FS superblock (SBLK).
Device '/dev/dsk/c5t12d0s6' doesn't have a SAM-FS superblock (SBLK).
Device '/dev/dsk/c5t12d0s7' doesn't have a SAM-FS superblock (SBLK).
Device '/dev/dsk/c5t13d0s0' has a SAM-FS superblock.
Couldn't open '/dev/dsk/c5t13d0s1': I/O error
Device '/dev/dsk/c5t13d0s3' has a SAM-FS superblock.
Device '/dev/dsk/c5t13d0s4' doesn't have a SAM-FS superblock (SBLK).
Device '/dev/dsk/c5t13d0s5' doesn't have a SAM-FS superblock (SBLK).
Device '/dev/dsk/c5t13d0s6' doesn't have a SAM-FS superblock (SBLK).
Device '/dev/dsk/c5t13d0s7' doesn't have a SAM-FS superblock (SBLK).
Device '/dev/dsk/c5t8d0s0' has a SAM-FS superblock.
Device '/dev/dsk/c5t8d0s1' has a SAM-FS superblock.
Device '/dev/dsk/c5t8d0s3' has a SAM-FS superblock.
Device '/dev/dsk/c5t8d0s4' doesn't have a SAM-FS superblock (SBLK).
Device '/dev/dsk/c5t8d0s5' doesn't have a SAM-FS superblock (SBLK).
Device '/dev/dsk/c5t8d0s6' doesn't have a SAM-FS superblock (SBLK).
Device '/dev/dsk/c5t8d0s7' doesn't have a SAM-FS superblock (SBLK).
Device '/dev/dsk/c5t9d0s0' has a SAM-FS superblock.
Couldn't open '/dev/dsk/c5t9d0s1': I/O error
Device '/dev/dsk/c5t9d0s3' has a SAM-FS superblock.
Device '/dev/dsk/c5t9d0s4' doesn't have a SAM-FS superblock (SBLK).
Device '/dev/dsk/c5t9d0s5' doesn't have a SAM-FS superblock (SBLK).
Device '/dev/dsk/c5t9d0s6' doesn't have a SAM-FS superblock (SBLK).
Device '/dev/dsk/c5t9d0s7' doesn't have a SAM-FS superblock (SBLK).
13 SAM-FS devices found.

#
# Family Set 'qfs1' Created Mon Jun 25 10:37:52 2004
#
# Missing slices
# Ordinal 0
# /dev/dsk/c5t8d0s1 10 mm qfs1 -
#
# Family Set 'qfs1' Created Wed Jul 11 08:47:38 2004
#

qfs1 200 ma qfs1 - shared

/dev/dsk/c5t8d0s3    201      mm     qfs1 -
/dev/dsk/c5t9d0s3    202     mr    qfs1   -
/dev/dsk/c5t10d0s3    203     mr    qfs1  -
/dev/dsk/c5t11d0s3    204     mr    qfs1  -
/dev/dsk/c5t12d0s3    205     mr    qfs1  -
/dev/dsk/c5t13d0s3    206     mr    qfs1  -

#
# Family Set `sqfs1' Created Wed Nov  7 16:55:19 2004
#

sqfs1 100 ma sqfs1 - shared

/dev/dsk/c5t8d0s0    101      mm     sqfs1  -
/dev/dsk/c5t9d0s0    102     mr    sqfs1  -
/dev/dsk/c5t10d0s0    103     g0    sqfs1  -
/dev/dsk/c5t11d0s0    104     g0    sqfs1  -
/dev/dsk/c5t12d0s0    105     g1    sqfs1  -
/dev/dsk/c5t13d0s0    106     g1    sqfs1  -

#

在以下代码示例的输出中，带有大于号 (>) 标志的设备是重复的设备。s0 分片从磁盘的起始处开始，整个磁盘 (s2) 分片也是如此。此输出样式来自某个运行 Solaris 9 OS 的系统。

示例 10-2 命令输出

# samfsconfig /dev/dsk/c3t*
#
# Family Set 'shsam1' Created Wed Oct 17 14:57:29 2001
#

shsam1 160 ma shsam1 shared
> /dev/dsk/c3t50020F23000055A8d0s2    161    mm   shsam1  -
> /dev/dsk/c3t50020F23000055A8d0s0    161    mm   shsam1  -
> /dev/dsk/c3t50020F23000055A8d0s1    162    mr   shsam1  -
> /dev/dsk/c3t50020F23000078F1d0s0    163    mr   shsam1  -
> /dev/dsk/c3t50020F23000078F1d0s2    163    mr   shsam1  -
> /dev/dsk/c3t50020F23000078F1d0s1    164    mr   shsam1  -