I am trying to mount a former disk to recover some data, and continue to get i/o error errors.  Here's the log after a fresh power cycle on the disk.

 

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Oct 23 10:23:02 ffs2 kernel: ata5.00: NCQ Send/Recv Log not supported
Oct 23 10:23:02 ffs2 kernel: ata5.00: configured for UDMA/133
Oct 23 10:23:02 ffs2 kernel: scsi 6:0:0:0: Direct-Access ATA ST3000VN000-1HJ1 SC60 PQ: 0 ANSI: 5
Oct 23 10:23:02 ffs2 kernel: sd 6:0:0:0: Attached scsi generic sg24 type 0
Oct 23 10:23:02 ffs2 kernel: sd 6:0:0:0: [sdy] 5860533168 512-byte logical blocks: (3.00 TB/2.73 TiB)
Oct 23 10:23:02 ffs2 kernel: sd 6:0:0:0: [sdy] 4096-byte physical blocks
Oct 23 10:23:02 ffs2 kernel: sd 6:0:0:0: [sdy] Write Protect is off
Oct 23 10:23:02 ffs2 kernel: sd 6:0:0:0: [sdy] Mode Sense: 00 3a 00 00
Oct 23 10:23:02 ffs2 kernel: sd 6:0:0:0: [sdy] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
Oct 23 10:23:02 ffs2 kernel: sdy: sdy1
Oct 23 10:23:02 ffs2 kernel: sd 6:0:0:0: [sdy] Attached SCSI disk
Oct 23 10:23:03 ffs2 unassigned.devices: Disk with ID 'ST3000VN000-1HJ166_W6A0TZ31 (sdy)' is not set to auto mount.
Oct 23 10:23:04 ffs2 kernel: ata5: SATA link down (SStatus 0 SControl 300)
Oct 23 10:23:09 ffs2 kernel: ata5: SATA link down (SStatus 0 SControl 300)
Oct 23 10:23:12 ffs2 kernel: ata2: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
Oct 23 10:23:12 ffs2 kernel: ata2.00: ACPI cmd ef/10:06:00:00:00:00 (SET FEATURES) succeeded
Oct 23 10:23:12 ffs2 kernel: ata2.00: ACPI cmd f5/00:00:00:00:00:00 (SECURITY FREEZE LOCK) filtered out
Oct 23 10:23:12 ffs2 kernel: ata2.00: ACPI cmd b1/c1:00:00:00:00:00 (DEVICE CONFIGURATION OVERLAY) filtered out
Oct 23 10:23:12 ffs2 kernel: ata2.00: supports DRM functions and may not be fully accessible
Oct 23 10:23:12 ffs2 kernel: ata2.00: disabling queued TRIM support
Oct 23 10:23:12 ffs2 kernel: ata2.00: ACPI cmd ef/10:06:00:00:00:00 (SET FEATURES) succeeded
Oct 23 10:23:12 ffs2 kernel: ata2.00: ACPI cmd f5/00:00:00:00:00:00 (SECURITY FREEZE LOCK) filtered out
Oct 23 10:23:12 ffs2 kernel: ata2.00: ACPI cmd b1/c1:00:00:00:00:00 (DEVICE CONFIGURATION OVERLAY) filtered out
Oct 23 10:23:12 ffs2 kernel: ata2.00: supports DRM functions and may not be fully accessible
Oct 23 10:23:12 ffs2 kernel: ata2.00: disabling queued TRIM support
Oct 23 10:23:12 ffs2 kernel: ata2.00: configured for UDMA/133
Oct 23 10:23:16 ffs2 kernel: ata5: link is slow to respond, please be patient (ready=0)
Oct 23 10:23:21 ffs2 kernel: ata5: COMRESET failed (errno=-16)
Oct 23 10:23:23 ffs2 kernel: ata5: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
Oct 23 10:23:23 ffs2 kernel: ata5.00: ACPI cmd ef/10:06:00:00:00:00 (SET FEATURES) succeeded
Oct 23 10:23:23 ffs2 kernel: ata5.00: ACPI cmd f5/00:00:00:00:00:00 (SECURITY FREEZE LOCK) filtered out
Oct 23 10:23:23 ffs2 kernel: ata5.00: ACPI cmd b1/c1:00:00:00:00:00 (DEVICE CONFIGURATION OVERLAY) filtered out
Oct 23 10:23:23 ffs2 kernel: ata5.00: NCQ Send/Recv Log not supported
Oct 23 10:23:23 ffs2 kernel: ata5.00: ACPI cmd ef/10:06:00:00:00:00 (SET FEATURES) succeeded
Oct 23 10:23:23 ffs2 kernel: ata5.00: ACPI cmd f5/00:00:00:00:00:00 (SECURITY FREEZE LOCK) filtered out
Oct 23 10:23:23 ffs2 kernel: ata5.00: ACPI cmd b1/c1:00:00:00:00:00 (DEVICE CONFIGURATION OVERLAY) filtered out
Oct 23 10:23:23 ffs2 kernel: ata5.00: NCQ Send/Recv Log not supported
Oct 23 10:23:23 ffs2 kernel: ata5.00: configured for UDMA/133

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It won't stay mounted long enough to copy much data off of it.  It mounts, I can 'ls' around, I can begin to copy stuff, and then it fails and is no longer communicating (won't show SMART etc).  Power cycling it does help, but it drops again shortly after.  I'm sure its failing.  I'm running an extended SMART test on it now, but I'm not confident it will finish. 

 

Here's the SMART data I do have (the CRC errors are legacy I believe and from a bad cable)

 

Edited October 23, 20223 yr by tucansam

Try using ddrescue on it.