Shingled hard drive problems. Total data loss
by bodge99 from LinuxQuestions.org on (#54V9G)
Hi,
I've recently had a few problems with shingled drives.. specifically:
Seagate BarraCuda 2 TB. Intel i7 laptop running Artix Linux.
Toshiba L200 1TB. Intel i3 laptop running Slackware Linux.
Western Digital Red 4TB 3.5" NAS (Raid 5).
Both laptops have a primary SSD system drive with a secondary (data) drive placed in a DVD style internal caddy. I've been using these caddies for a few years now, with no problems whatsoever. The currently used drives were installed within the last year as I wanted more space.
Anyway..
The WD drive has been kicked out of the array and reported as "failing". This drive has had about 200 hours use. The drive data appears to be intact and perfectly valid.
It would appear that this drive is shingled whereas the other drives are not. The drive tests as "perfect" with excellent SMART data.
Seagate Barracuda: I was reading a PDF when the system froze. On restart, the drive appeared empty when viewed with gparted.
Toshiba: L200: This is used in a bedroom based media computer. I was watching a film when the playback just froze. As with the Seagate drive, the drive now appears totally empty.
I'm not concerned about losing the media collection as I have decent backups.. but I am concerned that both drives appear to have lost everything.
I next removed the Toshiba drive from the laptop and connected it up to one of my development machines for analysis.
Using several tools the best I could recover was the partition & directory structure (Ext4 on GPT).. No files whatsoever.
I then repeated the exercise with the Seagate drive. As before, the best that I could recover was the partition & directory structure. Again no files recoverable at all.. Not even a single file name...
Both laptop drives test perfectly O.K. I've replaced the laptop data drives with what was fitted earlier. These are working perfectly.
Has anybody else seen this behaviour??
Bodge99
I've recently had a few problems with shingled drives.. specifically:
Seagate BarraCuda 2 TB. Intel i7 laptop running Artix Linux.
Toshiba L200 1TB. Intel i3 laptop running Slackware Linux.
Western Digital Red 4TB 3.5" NAS (Raid 5).
Both laptops have a primary SSD system drive with a secondary (data) drive placed in a DVD style internal caddy. I've been using these caddies for a few years now, with no problems whatsoever. The currently used drives were installed within the last year as I wanted more space.
Anyway..
The WD drive has been kicked out of the array and reported as "failing". This drive has had about 200 hours use. The drive data appears to be intact and perfectly valid.
It would appear that this drive is shingled whereas the other drives are not. The drive tests as "perfect" with excellent SMART data.
Seagate Barracuda: I was reading a PDF when the system froze. On restart, the drive appeared empty when viewed with gparted.
Toshiba: L200: This is used in a bedroom based media computer. I was watching a film when the playback just froze. As with the Seagate drive, the drive now appears totally empty.
I'm not concerned about losing the media collection as I have decent backups.. but I am concerned that both drives appear to have lost everything.
I next removed the Toshiba drive from the laptop and connected it up to one of my development machines for analysis.
Using several tools the best I could recover was the partition & directory structure (Ext4 on GPT).. No files whatsoever.
I then repeated the exercise with the Seagate drive. As before, the best that I could recover was the partition & directory structure. Again no files recoverable at all.. Not even a single file name...
Both laptop drives test perfectly O.K. I've replaced the laptop data drives with what was fitted earlier. These are working perfectly.
Has anybody else seen this behaviour??
Bodge99