Installing LTFS onto an MHVTL LTO-5 drive -- Cannot read device buffer

[vgx32]

Hi,

I'm fairly new to working with tape and VTL's, and I'm not sure if anyone has tried doing this yet (or if it's even possible): I'm attempting to install IBM's Linear Tape File System (LTFS) onto one an mhvtl LTO-5 tape drive.

I've successfully installed mhvtl, IBM's lin_tape driver, as well as all of IBM's ltfs tools and am able to get mhvtl to start up and run with several IBMtapeX & IBMchangerX devices appearing in my /dev folder.

I use mtx to load a tape into the drive and then I run IBM's mkltfs utility (it's used to format on the tape for ltfs) on the tape. When I run mkltfs, it spits out an error message saying that it cannot read the device buffer. This matches up with the output of vtltape:

vtltape: CDB (474) 3c 03 01 00 00 00 00 00 04 00
vtltape: spc_illegal_op: Unsupported OP CODE
vtltape: mkSenseBuf: Sense buf: 0x8064370
vtltape: mkSenseBuf: SENSE [Key/ASC/ASCQ] [05 20 00]
vtltape: completeSCSICommand: OP s/n: (474), sz: 0, sam_status: 2
vtltape: completeSCSICommand: [Key/ASC/ASCQ] [05 20 00]
ioctl(VX_TAPE_POLL_STATUS) returned: 0, interval: 10
ioctl(VX_TAPE_POLL_STATUS) returned: 254, interval: 1010

The CDB matches the scsi read buffer command reported by vtltape -d. Any ideas on what might cause this? (Given my limited tape experience, I am not sure I missed a setting in my library config files or if this is somehow related to mhvtl's implementation).

Any help is greatly appreciated!

[Mark Harvey]

The required code in the LTO5 emulation has not been implemented at this stage.

Sorry.

p.s. Patches gratefully accepted :)

Cheers

Mark

Sent from my iPad

On Jul 29, 2011, at 6:51, "vgx32 [via MHVTL - Linux Virtual Tape Library - Community Forums]"<[hidden email]> wrote:

Hi,

I'm fairly new to working with tape and VTL's, and I'm not sure if anyone has tried doing this yet (or if it's even possible): I'm attempting to install IBM's Linear Tape File System (LTFS) onto one an mhvtl LTO-5 tape drive.

I've successfully installed mhvtl, IBM's lin_tape driver, as well as all of IBM's ltfs tools and am able to get mhvtl to start up and run with several IBMtapeX & IBMchangerX devices appearing in my /dev folder.

I use mtx to load a tape into the drive and then I run IBM's mkltfs utility (it's used to format on the tape for ltfs) on the tape. When I run mkltfs, it spits out an error message saying that it cannot read the device buffer. This matches up with the output of vtltape:

vtltape: CDB (474) 3c 03 01 00 00 00 00 00 04 00
vtltape: spc_illegal_op: Unsupported OP CODE
vtltape: mkSenseBuf: Sense buf: 0x8064370
vtltape: mkSenseBuf: SENSE [Key/ASC/ASCQ] [05 20 00]
vtltape: completeSCSICommand: OP s/n: (474), sz: 0, sam_status: 2
vtltape: completeSCSICommand: [Key/ASC/ASCQ] [05 20 00]
ioctl(VX_TAPE_POLL_STATUS) returned: 0, interval: 10
ioctl(VX_TAPE_POLL_STATUS) returned: 254, interval: 1010

The CDB matches the scsi read buffer command reported by vtltape -d. Any ideas on what might cause this? (Given my limited tape experience, I am not sure I missed a setting in my library config files or if this is somehow related to mhvtl's implementation).

Any help is greatly appreciated!

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