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Hi,No key available with this passphrase.

one of our host, running centos 7.1, crashed today with a kernel panic on qemu-kvm process. the VM disks were stored on encrypted volume, which became locked after reboot. the cryptseup luksOpen  command throws "No Key available with this passphrase". The encrypted volume has a 512 bit key without any password. we also backup our key and both backup and key residing on server are same. We have tried to by pass current OS by booting up using live CD of Centos 7.1, Linux Mint 17, Ubuntu 17.04 with different versions of kernel and crypt setup. this did not succeed. we believe the key is correct but the Encrypted volume is not accepting it. Can you please help us on this. Please let me know if you need something else as well

* command used: cryptsetup luksOpen --key-file /etc/luks.key /dev/disk/by-uuid/92de4358-d815-496a-8a58-60e55346161d raid10-2hs-island
* Host Kernel Version: 3.10.0-229.el7.x86_64
* Host Cryptsetup version: 1.6.6

**output of cryptsetup luksOpen**

 **cryptsetup luksOpen --key-file /etc/luks.key /dev/disk/by-uuid/92de4358-d815-496a-8a58-60e55346161d raid10-2hs-island --verbose --debug**
```
# cryptsetup 1.7.2 processing "cryptsetup luksOpen --key-file /etc/luks.key /dev/disk/by-uuid/92de4358-d815-496a-8a58-60e55346161d raid10-2hs-island --verbose --debug"
# Running command open.
# Locking memory.
# Installing SIGINT/SIGTERM handler.
# Unblocking interruption on signal.
# Allocating crypt device /dev/disk/by-uuid/92de4358-d815-496a-8a58-60e55346161d context.
# Trying to open and read device /dev/disk/by-uuid/92de4358-d815-496a-8a58-60e55346161d with direct-io.
# Initialising device-mapper backend library.
# Trying to load LUKS1 crypt type from device /dev/disk/by-uuid/92de4358-d815-496a-8a58-60e55346161d.
# Crypto backend (gcrypt 1.5.3) initialized in cryptsetup library version 1.7.2.
# Detected kernel Linux 3.10.0-229.el7.x86_64 x86_64.
# Reading LUKS header of size 1024 from device /dev/disk/by-uuid/92de4358-d815-496a-8a58-60e55346161d
# Key length 64, device size 15622799360 sectors, header size 4036 sectors.
# Timeout set to 0 miliseconds.
# Password retry count set to 3.
# Password verification disabled.
# Iteration time set to 2000 miliseconds.
# Password retry count set to 1.
# Activating volume raid10-2hs-island [keyslot -1] using keyfile /etc/luks.key.
# dm version   [ opencount flush ]   [16384] (*1)
# dm versions   [ opencount flush ]   [16384] (*1)
# Detected dm-crypt version 1.13.0, dm-ioctl version 4.29.0.
# Device-mapper backend running with UDEV support enabled.
# dm status raid10-2hs-island  [ opencount flush ]   [16384] (*1)
# File descriptor passphrase entry requested.
# Trying to open key slot 0 [ACTIVE_LAST].
# Reading key slot 0 area.
# Using userspace crypto wrapper to access keyslot area.
# Trying to open key slot 1 [INACTIVE].
# Trying to open key slot 2 [INACTIVE].
# Trying to open key slot 3 [INACTIVE].
# Trying to open key slot 4 [INACTIVE].
# Trying to open key slot 5 [INACTIVE].
# Trying to open key slot 6 [INACTIVE].
# Trying to open key slot 7 [INACTIVE].
No key available with this passphrase.
# Releasing crypt device /dev/disk/by-uuid/92de4358-d815-496a-8a58-60e55346161d context.
# Releasing device-mapper backend.
# Unlocking memory.
Command failed with code 1: Operation not permitted
```

**cryptsetup luksDump:**

```
cryptsetup -v luksDump /dev/sdb
LUKS header information for /dev/sdb

Version:        1
Cipher name:    aes
Cipher mode:    xts-plain64
Hash spec:      sha1
Payload offset: 4096
MK bits:        512
MK digest:      XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
MK salt:        XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
                XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
MK iterations:  36750
UUID:           #############################

Key Slot 0: ENABLED
        Iterations:             141435
        Salt:                   XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
                                XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
        Key material offset:    8
        AF stripes:             4000
Key Slot 1: DISABLED
Key Slot 2: DISABLED
Key Slot 3: DISABLED
Key Slot 4: DISABLED
Key Slot 5: DISABLED
Key Slot 6: DISABLED
Key Slot 7: DISABLED
Command successful.
```
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