I've got about 1/2 the snapshots and less than 1/10th the data...but
my btrfs check times are much shorter than either: 15 minutes and 65
minutes (lowmem).
[chris@f28s ~]$ sudo btrfs fi us /mnt/first
Overall:
Device size: 1024.00GiB
Device allocated: 774.12GiB
Device unallocated: 249.87GiB
Device missing: 0.00B
Used: 760.48GiB
Free (estimated): 256.95GiB (min: 132.01GiB)
Data ratio: 1.00
Metadata ratio: 2.00
Global reserve: 512.00MiB (used: 0.00B)
Data,single: Size:761.00GiB, Used:753.93GiB
/dev/mapper/first 761.00GiB
Metadata,DUP: Size:6.50GiB, Used:3.28GiB
/dev/mapper/first 13.00GiB
System,DUP: Size:64.00MiB, Used:112.00KiB
/dev/mapper/first 128.00MiB
Unallocated:
/dev/mapper/first 249.87GiB
146 subvolumes
137 snapshots
total csum bytes: 790549924
total tree bytes: 3519250432
total fs tree bytes: 2546073600
total extent tree bytes: 131350528
Original mode check takes ~15 minutes
Lowmem mode takes ~65 minutes
RAM: 4G
CPU: Intel(R) Pentium(R) CPU N3700 @ 1.60GHz
Chris Murphy
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