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authorJames Lee <[email protected]>2015-09-19 22:00:36 -0400
committerBrian Behlendorf <[email protected]>2015-10-13 10:37:05 -0700
commit33df62d052bad11a1ebb220810672fcfba2a8d86 (patch)
treefbc78fd25a2411397125944217ed22479174e988 /lib/libzpool
parent2986b3fd2587b1da5b6047a5c0b6bbb0b6d9c47e (diff)
zfs-import: Perform verbatim import using cache file
This change modifies the import service to use the default cache file to perform a verbatim import of pools at boot. This fixes code that searches all devices and imported all visible pools. Using the cache file is in keeping with the way ZFS has always worked, how Solaris, Illumos, FreeBSD, and systemd performs imports, and is how it is written in the man page (zpool(1M,8)): All pools in this cache are automatically imported when the system boots. Importantly, the cache contains important information for importing multipath devices, and helps control which pools get imported in more dynamic environments like SANs, which may have thousands of visible and constantly changing pools, which the ZFS_POOL_EXCEPTIONS variable is not equipped to handle. Verbatim imports prevent rogue pools from being automatically imported and mounted where they shouldn't be. The change also stops the service from exporting pools at shutdown. Exporting pools is only meant to be performed explicitly by the administrator of the system. The old behavior of searching and importing all visible pools is preserved and can be switched on by heeding the warning and toggling the ZPOOL_IMPORT_ALL_VISIBLE variable in /etc/default/zfs. Signed-off-by: James Lee <[email protected]> Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #3777 Closes #3526
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