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Why do I have so much FREE space?
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Can anyone help me understand what's going on here? For some background, I deleted a zvol I didn't need any longer and would like for nas to occupy the entire pool. I can't figure out how I'm supposed to go about expanding the volume to fill the entire pool. Searching online just yields a ton of discussions around replacing drives or not trusting zpool stats. This is a 7 disk raidz2 with 10TB disks.

 # zpool list
 NAME   SIZE  ALLOC   FREE  EXPANDSZ   FRAG    CAP  DEDUP  HEALTH  ALTROOT
 nas   50.5T  37.8T  12.7T         -    25%    74%  1.00x  ONLINE  -

# zfs list
NAME   USED  AVAIL  REFER  MOUNTPOINT
nas   25.1T  7.44T  25.1T  /nas

# zpool status
  pool: nas
 state: ONLINE
  scan: scrub repaired 0B in 44h0m with 0 errors on Mon Mar  9 21:24:21 2020
config:

        NAME                        STATE     READ WRITE CKSUM
        nas                         ONLINE       0     0     0
          raidz2-0                  ONLINE       0     0     0
            wwn-0x5000cca252e56a10  ONLINE       0     0     0
            scsi-35000cc2a6bdb6520  ONLINE       0     0     0
            scsi-35000cca252d5891c  ONLINE       0     0     0
            wwn-0x5000cc2a52e5174d  ONLINE       0     0     0
            scsi-35000cca252e56c4a  ONLINE       0     0     0
            scsi-35000cc2a73e34a97  ONLINE       0     0     0
            scsi-35000cca252e5717e  ONLINE       0     0     0

errors: No known data errors

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4 years ago