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# Tested on RHEL 6 & 7
# Even if ZFS can use individual slices or partitions, it is recommended to use whole disks. # ------------------------------------------------------------------------------------- # Extending a concat zpool # ------------------------------------------------------------------------------------- POOLNAME=c_pool POOLMNTP=/c_pool DEVICE01=/dev/sdd # Given following zpool: zpool status $POOLNAME pool: c_pool state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM c_pool ONLINE 0 0 0 sdb ONLINE 0 0 0 sdc ONLINE 0 0 0 errors: No known data errors zpool list $POOLNAME NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT c_pool 19.9G 104K 19.9G 0% 1.00x ONLINE - # Extend zpool zpool add $POOLNAME $DEVICE01 # If you have an error like this one: invalid vdev specification use '-f' to override the following errors: /dev/sdd does not contain an EFI label but it may contain partition information in the MBR. # you should use '-f' option to create the pool - first ensure that disk(s) are the # right one(s): # zpool add -f $POOLNAME $DEVICE01 # Check zpool status $POOLNAME pool: c_pool state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM c_pool ONLINE 0 0 0 sdb ONLINE 0 0 0 sdc ONLINE 0 0 0 sdd ONLINE 0 0 0 <---- errors: No known data errors zpool list $POOLNAME NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT c_pool 29.8G 166K 29.8G 0% 1.00x ONLINE - # ------------------------------------------------------------------------------------- # Extending a mirrored zpool # ------------------------------------------------------------------------------------- POOLNAME=m_pool SUBMIRR1=/dev/sdd SUBMIRR2=/dev/sde # Given following zpool: zpool status $POOLNAME pool: m_pool state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM m_pool ONLINE 0 0 0 mirror-0 ONLINE 0 0 0 sdb ONLINE 0 0 0 sdc ONLINE 0 0 0 errors: No known data errors zpool list $POOLNAME NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT m_pool 9.94G 100K 9.94G 0% 1.00x ONLINE - # Extend zpool zpool add $POOLNAME mirror $SUBMIRR1 $SUBMIRR2 # If you have an error like this one: invalid vdev specification use '-f' to override the following errors: /dev/sdd does not contain an EFI label but it may contain partition information in the MBR. # you should use '-f' option to create the pool - first ensure that disk(s) are the # right one(s): # zpool add -f $POOLNAME mirror $SUBMIRR1 $SUBMIRR2 # Check zpool status $POOLNAME pool: m_pool state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM m_pool ONLINE 0 0 0 mirror-0 ONLINE 0 0 0 sdb ONLINE 0 0 0 sdc ONLINE 0 0 0 mirror-1 ONLINE 0 0 0 sdd ONLINE 0 0 0 <---- sde ONLINE 0 0 0 <---- errors: No known data errors zpool list $POOLNAME NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT m_pool 19.9G 104K 19.9G 0% 1.00x ONLINE - |