kv: inconsistent on arm64

[dezren39]

this is probably related to using a pi nano which is arm64.

i will report anyways, i think maybe there could be improved messaging,
but the issue might be something underlying with badger or something.

this is things i found, links with like dgraph and stuff,
so idk maybe it's not entirely an issue for here, but user will be confused.

• https://stackoverflow.com/questions/64756694/calling-mremap-in-go-doesnt-work-but-gives-no-error
• https://discuss.dgraph.io/t/error-mremap-size-mismatch-on-arm64/15333/7
• 46bit/distributed-systems@0661a19

it is probably more related to arm64, but exacerbated by low memory low power device.

maybe i should check the minimum requirements for charm/badger but i'd hoped
it would work nicely for those devices so i could use it in helper scripts
for less technical users of raspberry-alike arm thing.

the key has been set in advanced and can be 'get' from other windows and linux boxes.

sometimes it works here, sometimes it doesn't.

when i tried before list would work but get's would fail,
now when i redid this for this message it's the list failing

root@beepy39:/home/user# charm kv list
Error: During db.vlog.open error: while truncating last value log file: /root/.local/share/charm/cloud.charm.sh/kv/charm.sh.kv.user.default/000004.vlog error: mremap size mismatch: requested: 20 got: 20000000
Usage:
  charm kv list [@DB] [flags]

Flags:
  -d, --delimiter string   delimiter to separate keys and values (default "\t")
  -h, --help               help for list
  -k, --keys-only          only print keys and don't fetch values from the db
  -r, --reverse            list in reverse lexicographic order
  -b, --show-binary        print binary values
  -v, --values-only        only print values

root@beepy39:/home/user# charm kv list
Error: while opening memtables error: while opening fid: 8 error: while updating skiplist error: mremap size mismatch: requested: 20 got: 134217728
Usage:
  charm kv list [@DB] [flags]

Flags:
  -d, --delimiter string   delimiter to separate keys and values (default "\t")
  -h, --help               help for list
  -k, --keys-only          only print keys and don't fetch values from the db
  -r, --reverse            list in reverse lexicographic order
  -b, --show-binary        print binary values
  -v, --values-only        only print values

root@beepy39:/home/user# charm kv get yes
plz
root@beepy39:/home/user# charm kv list
Error: while opening memtables error: while opening fid: 9 error: while updating skiplist error: mremap size mismatch: requested: 20 got: 134217728
Usage:
  charm kv list [@DB] [flags]

Flags:
  -d, --delimiter string   delimiter to separate keys and values (default "\t")
  -h, --help               help for list
  -k, --keys-only          only print keys and don't fetch values from the db
  -r, --reverse            list in reverse lexicographic order
  -b, --show-binary        print binary values
  -v, --values-only        only print values

another attempt from user instead of root

   Linked!

user@beepy39:~ $ charm kv list
joyce   love
value   value1
yes     plz
user@beepy39:~ $ charm kv get yes
Error: while opening memtables error: while opening fid: 1 error: while updating skiplist error: mremap size mismatch: requested: 148 got: 134217728
Usage:
  charm kv get KEY[@DB] [flags]

Flags:
  -h, --help          help for get
  -b, --show-binary   print binary values

user@beepy39:~ $ charm kv get joyce
Error: During db.vlog.open error: while truncating last value log file: /home/user/.local/share/charm/cloud.charm.sh/kv/charm.sh.kv.user.default/000001.vlog error: mremap size mismatch: requested: 20 got: 20000000
Usage:
  charm kv get KEY[@DB] [flags]

Flags:
  -h, --help          help for get
  -b, --show-binary   print binary values

user@beepy39:~ $ charm kv get value
Error: while opening memtables error: while opening fid: 2 error: while updating skiplist error: mremap size mismatch: requested: 20 got: 134217728
Usage:
  charm kv get KEY[@DB] [flags]

Flags:
  -h, --help          help for get
  -b, --show-binary   print binary values

[dezren39]

dupe of #32