Dear All,

I'm using metadata repair tools to repair a damaged MDS following below 
document. My storage has about 276TB data. Cephfs-data-scan is using 32 
workers. How long will it take to finish scanning extents? What about scanning 
inodes? It has run 6 hours and metadata pool dropped 1G. Is this normal? Thanks.


ceph df
--- RAW STORAGE ---
CLASS     SIZE    AVAIL     USED  RAW USED  %RAW USED
hdd    1.3 PiB  454 TiB  835 TiB   835 TiB      64.79
ssd    7.1 TiB  6.2 TiB  878 GiB   878 GiB      12.15
TOTAL  1.3 PiB  460 TiB  836 TiB   836 TiB      64.50

--- POOLS ---
POOL                   ID   PGS   STORED  OBJECTS     USED  %USED  MAX AVAIL
cephfs_data             1  4096  276 TiB  222.96M  828 TiB  71.28    111 TiB
cephfs_metadata         2    32  101 GiB    5.83M  302 GiB   0.09    111 TiB
device_health_metrics  10     1  239 MiB      251  716 MiB      0    112 TiB
cephfs_ssd             11    32  117 GiB    1.49M  361 GiB   5.83    1.9 TiB



https://docs.ceph.com/en/latest/cephfs/disaster-recovery-experts/


Justin Li
Senior Technical Officer
School of Information Technology
Faculty of Science, Engineering and Built Environment

Request for assistance can be lodged to the SIT Technical Team using this 
form<https://deakinesmprod.service-now.com/esc?id=sc_cat_item&sys_id=7afa8fa5db62e9101acbdbf2f39619a7>

Deakin University
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