formatted proxmox, how to restore backup please help me

That depends. Is there something on it you still need? If not I would just wipe the disk and create a fresh new storage on it. For example in WebUI: "YourNode -> Disks -> sdb -> Wipe Disk Button" to destroy everything on it. Then "YourNode -> Disks -> LVM-Thin -> Create: Thin pool" to create a new LVM-Thin storage on it.
 
That depends. Is there something on it you still need? If not I would just wipe the disk and create a fresh new storage on it. For example in WebUI: "YourNode -> Disks -> sdb -> Wipe Disk Button" to destroy everything on it. Then "YourNode -> Disks -> LVM-Thin -> Create: Thin pool" to create a new LVM-Thin storage on it.
Okay, but this disk is just the storage of the VMs, but when doing that, it gives this error in the GUI:


error wiping '/dev/sdb': 209715200 bytes (210 MB, 200 MiB) copied, 2.21614 s, 94.6 MB/s
 
Okay, but this disk is just the storage of the VMs, but when doing that, it gives this error in the GUI:


error wiping '/dev/sdb': 209715200 bytes (210 MB, 200 MiB) copied, 2.21614 s, 94.6 MB/s
Maybe that SSD is damaged too? You could initiate a smart test with smartctl -t long /dev/sdb and check the SMART attributes with smartctl -a /dev/sdb.
 
Maybe that SSD is damaged too? You could initiate a smart test with smartctl -t long /dev/sdb and check the SMART attributes with smartctl -a /dev/sdb.
Any command I use to format the partition always gives an error like this, see:

root@oraculo:~# fdisk /dev/sdb

Welcome to fdisk (util-linux 2.36.1).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.


Command (m for help): d
Selected partition 1
Partition 1 has been deleted.

Command (m for help): w
The partition table has been altered.
Calling ioctl() to re-read partition table.
/dev/sdb: fsync device failed: Input/output error

root@oraculo:~#
 
Maybe that SSD is damaged too? You could initiate a smart test with smartctl -t long /dev/sdb and check the SMART attributes with smartctl -a /dev/sdb.
root@oraculo:~# smartctl -t long /dev/sdb
smartctl 7.2 2020-12-30 r5155 [x86_64-linux-5.13.19-4-pve] (local build)
Copyright (C) 2002-20, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF OFFLINE IMMEDIATE AND SELF-TEST SECTION ===
Self-test functions not supported

Sending command: "Execute SMART Extended self-test routine immediately in off-line mode".
Command "Execute SMART Extended self-test routine immediately in off-line mode" failed: scsi error badly formed scsi parameters
root@oraculo:~# smartctl -a /dev/sdb
smartctl 7.2 2020-12-30 r5155 [x86_64-linux-5.13.19-4-pve] (local build)
Copyright (C) 2002-20, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Device Model: SATAFIRM S11
Serial Number: 50026B77821020CE
LU WWN Device Id: 5 0026b7 7821020ce
Firmware Version: SBFK71W1
User Capacity: 480,103,981,056 bytes [480 GB]
Sector Size: 512 bytes logical/physical
Rotation Rate: Solid State Device
TRIM Command: Available
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: ACS-3 T13/2161-D revision 4
SATA Version is: SATA 3.2, 6.0 Gb/s (current: 1.5 Gb/s)
Local Time is: Sat Feb 26 20:30:19 2022 -03
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

General SMART Values:
Offline data collection status: (0x00) Offline data collection activity
was never started.
Auto Offline Data Collection: Disabled.
Total time to complete Offline
data collection: (65535) seconds.
Offline data collection
capabilities: (0x00) Offline data collection not supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.

SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x0032 001 100 000 Old_age Always - 76
9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 31695
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 69
148 Unknown_Attribute 0x0000 100 100 000 Old_age Offline - 187
149 Unknown_Attribute 0x0000 100 100 000 Old_age Offline - 34
167 Unknown_Attribute 0x0000 100 100 000 Old_age Offline - 3
168 Unknown_Attribute 0x0012 100 100 000 Old_age Always - 0
169 Unknown_Attribute 0x0000 100 100 000 Old_age Offline - 58
170 Unknown_Attribute 0x0000 100 100 000 Old_age Offline - 17
172 Unknown_Attribute 0x0032 100 100 000 Old_age Always - 0
173 Unknown_Attribute 0x0000 100 100 000 Old_age Offline - 23069062
181 Program_Fail_Cnt_Total 0x0032 100 100 000 Old_age Always - 0
182 Erase_Fail_Count_Total 0x0000 100 100 000 Old_age Offline - 118
187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always - 25
192 Power-Off_Retract_Count 0x0012 100 100 000 Old_age Always - 47
194 Temperature_Celsius 0x0022 075 056 000 Old_age Always - 25 (Min/Max 21/44)
196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 142
199 UDMA_CRC_Error_Count 0x0032 100 100 000 Old_age Always - 0
218 Unknown_Attribute 0x0032 100 100 000 Old_age Always - 0
231 Unknown_SSD_Attribute 0x0000 036 036 000 Old_age Offline - 64
233 Media_Wearout_Indicator 0x0032 100 100 000 Old_age Always - 158133
241 Total_LBAs_Written 0x0032 100 100 000 Old_age Always - 87625
242 Total_LBAs_Read 0x0032 100 100 000 Old_age Always - 198073
244 Unknown_Attribute 0x0000 100 100 000 Old_age Offline - 352
245 Unknown_Attribute 0x0000 100 100 000 Old_age Offline - 390
246 Unknown_Attribute 0x0000 100 100 000 Old_age Offline - 7219800

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
No self-tests have been logged. [To run self-tests, use: smartctl -t]

Selective Self-tests/Logging not supported

root@oraculo:~#
 
Disk /dev/sda: 447.13 GiB, 480103981056 bytes, 937703088 sectors
Disk model: KINGSTON SA400S3

Disk /dev/sdb: 447.13 GiB, 480103981056 bytes, 937703088 sectors
Disk model: SATAFIRM S11

Am I right assuming that both of your SSDs are Kingston A400?
If yes, google for: Kingston A400 SATAFIRM S11
Seems one of your SSDs has a known bug/problem and a firmware update maybe can fix it.
But investigate for yourself and be careful to not brick anything!

PS.: You maybe should check for an firmware update for the other (functional) SSD too, to not run in the same issue.
But again, read carefully! E.g. if the firmware update erases the drive or such!
 
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Also sounds like your first NAND cells starts failing if I look at the SMART attributes like Erase_Fail_Count_Total. So maybe that SSD might not life that much longer.
 
Also sounds like your first NAND cells starts failing if I look at the SMART attributes like Erase_Fail_Count_Total. So maybe that SSD might not life that much longer.
I see, I already requested the purchase of a new SSD.
But I leave here my huge thanks, your help was really of great value.
Thank you so much for the goodwill!
You were phenomenal.
 
Am I right assuming that both of your SSDs are Kingston A400?
If yes, google for: Kingston A400 SATAFIRM S11
Seems one of your SSDs has a known bug/problem and a firmware update maybe can fix it.
But investigate for yourself and be careful to not brick anything!

PS.: You maybe should check for an firmware update for the other (functional) SSD too, to not run in the same issue.
But again, read carefully! E.g. if the firmware update erases the drive or such!
OK, very thanks...
 

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