Between me and my partner this is the third out of seven or so Samsung SSDs. All of them bought at different times and used in completely different computers from different manufacturers with different OSs over the past three to four years.
It's showing the same signs that harddrives show when failing under Linux. Logs full of messages like this:
[4839597.453959] sd 4:0:0:0: [sda] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_TIMEOUT
[4839597.453962] sd 4:0:0:0: [sda] CDB:
[4839597.453964] Write(10): 2a 00 59 6f 05 40 00 05 40 00
[4839597.453970] blk_update_request: I/O error, dev sda, sector 1500448064
[4839597.453996] EXT4-fs warning (device dm-1): ext4_end_bio:317: I/O error -5 writing to inode 6166928 (offset 301989888 size 8388608 starting block 187492520)
[4839597.453998] Buffer I/O error on device dm-1, logical block 187492520
[4839597.454000] Buffer I/O error on device dm-1, logical block 187492521
[4839597.454001] Buffer I/O error on device dm-1, logical block 187492522
[4839597.454002] Buffer I/O error on device dm-1, logical block 187492523
[4839597.454003] Buffer I/O error on device dm-1, logical block 187492524
[4839597.454005] Buffer I/O error on device dm-1, logical block 187492525
[4839597.454006] Buffer I/O error on device dm-1, logical block 187492526
[4839597.454007] Buffer I/O error on device dm-1, logical block 187492527
[4839597.454008] Buffer I/O error on device dm-1, logical block 187492528
[4839597.454009] Buffer I/O error on device dm-1, logical block 187492529
[4839597.454063] sd 4:0:0:0: [sda] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_TIMEOUT
[4839597.454064] sd 4:0:0:0: [sda] CDB:
[4839597.454065] Write(10): 2a 00 59 6f 0a 80 00 05 40 00
[4839597.454069] blk_update_request: I/O error, dev sda, sector 1500449408
[4839597.454093] EXT4-fs warning (device dm-1): ext4_end_bio:317: I/O error -5 writing to inode 6166928 (offset 301989888 size 8388608 starting block 187492688)
[4839597.454150] sd 4:0:0:0: [sda] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_TIMEOUT
and this
[4840061.919833] ata5.00: exception Emask 0x0 SAct 0x1fffe0 SErr 0x0 action 0x6 frozen
[4840061.919839] ata5.00: failed command: WRITE FPDMA QUEUED
[4840061.919843] ata5.00: cmd 61/00:28:40:2f:d1/16:00:59:00:00/40 tag 5 ncq 2883584 out
[4840061.919843] res 40/00:01:09:4f:c2/00:00:00:00:00/00 Emask 0x4 (timeout)
[4840061.919845] ata5.00: status: { DRDY }
[4840061.919847] ata5.00: failed command: WRITE FPDMA QUEUED
[4840061.919850] ata5.00: cmd 61/c0:30:40:45:d1/0f:00:59:00:00/40 tag 6 ncq 2064384 out
[4840061.919850] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
[4840061.919851] ata5.00: status: { DRDY }
That just go on and on.
Also despite the computer not having any load, operations that normally completely take hundred times longer or more.