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Add enclosure_symlinks option to vdev_id

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Add an 'enclosure_symlinks' option to vdev_id.conf.  This creates
consistently named symlinks to the enclosure devices (/dev/sg*) based
off the configuration in vdev_id.conf.  The enclosure symlinks show
up in /dev/by-enclosure/<prefix>-<channel><num>.  The links make it
make it easy to run sg_ses on a particular enclosure device.  The
enclosure links are created in addition to the normal
/dev/disk/by-vdev links.

'enclosure_symlinks' is only valid in sas_direct configurations.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Simon Guest <simon.guest@tesujimath.org>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes #8194
This commit is contained in:
Tony Hutter
2018-12-14 17:27:49 -08:00
committed by Brian Behlendorf
parent 7c46894081
commit c66401fae0
4 changed files with 112 additions and 3 deletions
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etc/zfs/vdev_id.conf.sas_direct.example
+3
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@@ -2,6 +2,9 @@ multipath no
topology sas_direct
phys_per_port 4
# Additionally create /dev/by-enclousure/ symlinks for enclosure devices
enclosure_symlinks yes
# PCI_ID HBA PORT CHANNEL NAME
channel 85:00.0 1 A
channel 85:00.0 0 B