openzfs/zfs
Auf GitHub ansehenmismatched replication level: both 3-way and 2-way mirror vdevs are present
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#12.596 geöffnet am 30. Sept. 2021
Bot: Not StaleType: DefectType: Documentationgood first issue
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Beschreibung
System information
| Type | Version/Name |
|---|---|
| Distribution Name | Centos |
| Distribution Version | 7 |
| Kernel Version | 5.5 |
| Architecture | x86_64 |
| OpenZFS Version | 2.1.99-1 |
Describe the problem you're observing
Adding mirrored special devices results in an error when redundancy level does not match the target pool. Either the manpage / documentation is incorrect or the implementation is.
Describe how to reproduce the problem
#
# zpool create tank mirror $p/tank_DISK00 $p/tank_DISK01 $p/tank_DISK02 \
special mirror $p/tank_SPECIAL00 $p/tank_SPECIAL01
invalid vdev specification
use '-f' to override the following errors:
mismatched replication level: both 3-way and 2-way mirror vdevs are present
#
# zpool create tank mirror $p/tank_DISK00 $p/tank_DISK01 $p/tank_DISK02 \
special mirror $p/tank_SPECIAL00 $p/tank_SPECIAL01 $p/tank_SPECIAL02
#
Manpage states:
special
A device dedicated solely for allocating various kinds of internal metadata,
and optionally small file blocks. The redundancy of this device **should** match
the redundancy of the other normal devices in the pool. If more than one spe‐
cial device is specified, then allocations are load-balanced between those
devices.
Which would imply it is optional.