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show ddp meta_list
Function
The show ddp meta_list command is used to recursively search for deduplication and compression metadata and redundant metadata, including chunk reference count, data verification value, and transaction ID of flushing data into disks.
Parameters
Parameter |
Description |
Value |
|---|---|---|
| domain_id=? | ID of the domain that you want to query. | To obtain the value, run the "show file_system general" or "show lun dedup_compress" command. |
| chunk_id=? | ID of the starting chunk for the recursive search. | The value ranges from 1 to 18446744073709551615. |
| controller=? | Controller ID. | The value is in the format of "XA" or "XB" or "XC" or "XD", where the "X" is an integer ranging from 0 to 3, for example: "0A", "1C". |
Usage Guidelines
- Before running this command, confirm that you have selected the correct domain ID and chunk ID.
- When running this command, specify a controller ID.
Example
To recursively search domain "0" for deduplication metadata from chunk "1" and display a maximum of 80 records.
developer:/>show ddp meta_list domain_id=0 chunk_id=1 controller=0A Chunk ID Ditto Level Extent ID Offset Gang Flag Storage Tier Physical Length Reference Count Transaction Number -------- ----------- ---------------- ------ --------- ------------ --------------- --------------- ------------------ 1024 0 0xe042004000600f 2832 0 SAS 8 1 5 1025 0 0xe042004000600f 2840 0 SAS 8 1 5 1026 0 0xe042004000600f 2848 0 SAS 8 1 5 1027 0 0xe042004000600e 2944 0 SAS 8 1 5 1028 0 0xe042004000600e 2952 0 SAS 8 1 5 1029 0 0xe042004000600e 2960 0 SAS 8 1 5 1030 0 0xe042004000600e 2968 0 SAS 8 1 5 1031 0 0xe042004000600e 2976 0 SAS 8 1 5 1032 0 0xe042004000600e 2984 0 SAS 8 1 5 1033 0 0xe042004000600e 2992 0 SAS 8 1 5 1034 0 0xe042004000600e 3000 0 SAS 8 1 5 1035 0 0xe042004000600e 3008 0 SAS 8 1 5 1036 0 0xe042004000600e 5104 0 SAS 8 1 5 1037 0 0xe042004000600e 5112 0 SAS 8 1 5 1038 0 0xe042004000600e 5120 0 SAS 8 1 5 1039 0 0xe042004000600e 5128 0 SAS 8 1 5 1040 0 0xe042004000600e 5136 0 SAS 8 1 5 1041 0 0xe042004000600d 4168 0 SAS 8 1 5 1042 0 0xe042004000600d 4176 0 SAS 8 1 5 1043 0 0xe042004000600d 4184 0 SAS 8 1 5 1044 0 0xe042004000600d 5992 0 SAS 8 1 5 1045 0 0xe042004000600d 6000 0 SAS 8 1 5 1046 0 0xe042004000600d 6008 0 SAS 8 1 5 1047 0 0xe042004000600d 6016 0 SAS 8 1 5 1048 0 0xe042004000600c 5104 0 SAS 8 1 5 1049 0 0xe042004000600c 5112 0 SAS 8 1 5 1050 0 0xe042004000600c 5120 0 SAS 8 1 5 1051 0 0xe042004000600c 5128 0 SAS 8 1 5 1052 0 0xe042004000600c 5464 0 SAS 8 1 5 1053 0 0xe042004000600c 5472 0 SAS 8 1 5 1054 0 0xe042004000600c 6448 0 SAS 8 1 5 1055 0 0xe042004000600c 6456 0 SAS 8 1 5 1056 0 0xe042004000600c 6464 0 SAS 8 1 5 1057 0 0xe042004000600c 6472 0 SAS 8 1 5 1058 0 0xe042004000600c 6480 0 SAS 8 1 5 1059 0 0xe042004000600b 1920 0 SAS 8 1 5 1060 0 0xe042004000600b 1928 0 SAS 8 1 5 1061 0 0xe042004000600b 1936 0 SAS 8 1 5 1062 0 0xe042004000600b 1944 0 SAS 8 1 5 1063 0 0xe042004000600b 2560 0 SAS 8 1 5
System Response
The following table describes the parameter meanings.
Parameter |
Meaning |
|---|---|
| Chunk ID | Chunk ID. |
| Ditto Level | Redundancy level. |
| Extent ID | Extent ID of a physical chunk. |
| Offset | Extent offset of a physical chunk. Unit: section. |
| Gang Flag | Gang chunk flag. |
| Storage Tier | Storage tier. |
| Physical Length | Chunk length. Unit: section. |
| Reference Count | Chunk reference count. |
| Transaction Number | Chunk flushing transaction ID. |
