diff options
| author | David Teigland <teigland@redhat.com> | 2023-01-19 17:37:31 -0600 |
|---|---|---|
| committer | David Teigland <teigland@redhat.com> | 2023-01-31 15:30:35 -0600 |
| commit | 17a3585cbb55d9a15ced9775a18b50c53a50ee8e (patch) | |
| tree | 6a4d9620ead498a87456174b494a810e67c78a67 /man | |
| parent | d9f8acb65a78c20ac806efaeb7a1e39208e1a443 (diff) | |
| download | lvm2-17a3585cbb55d9a15ced9775a18b50c53a50ee8e.tar.gz | |
pvscan: use alternate device names from DEVLINKS to check filter
pvscan --cache <dev> is called by our udev rule at a time when all
the symlinks for <dev> may not be created yet (by other udev rules.)
The regex filter in lvm.conf may refer to <dev> using a symlink name
that hasn't yet been created, which would cause <dev> to not match
the filter regex. The DEVLINKS env var, set by udev, contains all
the symlink names for <dev> that have been or will be created.
So, we add all these symlink names to dev->aliases, as if we had
found them in /dev. This allows <dev> to be recognized by a regex
filter containing a symlink for <dev>.
Diffstat (limited to 'man')
| -rw-r--r-- | man/lvmautoactivation.7_main | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/man/lvmautoactivation.7_main b/man/lvmautoactivation.7_main index 808ea0d9f..0f7734557 100644 --- a/man/lvmautoactivation.7_main +++ b/man/lvmautoactivation.7_main @@ -184,6 +184,19 @@ system from booting. A custom systemd service could be written to run autoactivation during system startup, in which case disabling event autoactivation may be useful. . +.SS lvm.conf filter +.P +Device symlinks from /dev/disk/ can be used in the lvm.conf filter to +guard against changes in kernel device names. The /dev/disk/by-path/ or +/dev/disk/by-id/ prefixes should be included in the filter names; these +prefixes help lvm detect that symlink names are used. Filters containing +symlinks require special matching by commands run in the lvm udev rule. +.P +Common symlinks, e.g. beginning with wwn-, scsi-, pci-, or lvm-pv-uuid-, +are recommended. Uncommon or custom symlinks created by custom udev rules +may be less reliable. If a custom udev rule creates symlinks used in the +lvm filter, then the udev rule should be started prior to the lvm rule. +. .SH EXAMPLES .P VG "vg" contains two PVs: |