My SSD USB Disk Unmountable: No file system


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Dec  8 15:29:48 Tower kernel: sd 10:0:0:0: [sdg] tag#0 UNKNOWN(0x2003) Result: hostbyte=0x00 driverbyte=0x08 cmd_age=0s
Dec  8 15:29:48 Tower kernel: sd 10:0:0:0: [sdg] tag#0 Sense Key : 0x5 [current]
Dec  8 15:29:48 Tower kernel: sd 10:0:0:0: [sdg] tag#0 ASC=0x21 ASCQ=0x0
Dec  8 15:29:48 Tower kernel: sd 10:0:0:0: [sdg] tag#0 CDB: opcode=0x28 28 00 7a 11 ff ff 00 00 01 00
Dec  8 15:29:48 Tower kernel: blk_update_request: critical target error, dev sdg, sector 16383999992 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0
Dec  8 15:29:48 Tower root: Warning! Read error 5; strange behavior now likely!
Dec  8 15:29:48 Tower root: #007Caution: invalid backup GPT header, but valid main header; regenerating
Dec  8 15:29:48 Tower kernel: sd 10:0:0:0: [sdg] tag#0 UNKNOWN(0x2003) Result: hostbyte=0x00 driverbyte=0x08 cmd_age=0s
Dec  8 15:29:48 Tower kernel: sd 10:0:0:0: [sdg] tag#0 Sense Key : 0x5 [current]
Dec  8 15:29:48 Tower kernel: sd 10:0:0:0: [sdg] tag#0 ASC=0x21 ASCQ=0x0
Dec  8 15:29:48 Tower kernel: sd 10:0:0:0: [sdg] tag#0 CDB: opcode=0x28 28 00 7a 11 ff ff 00 00 01 00
Dec  8 15:29:48 Tower kernel: blk_update_request: critical target error, dev sdg, sector 16383999992 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
Dec  8 15:29:48 Tower kernel: Buffer I/O error on dev sdg, logical block 2047999999, async page read

 

This is hardware problem, but since there's no SMART report because of the USB bridge can't tell you if it's the disk or the USB bridge, note that we don't recommended USB for array/pool devices.

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