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Re: [Qemu-devel] scsi-hd with discard_granularity and unmap results in A
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] scsi-hd with discard_granularity and unmap results in Aborted Commands |
Date: |
Mon, 19 Nov 2012 09:10:57 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:16.0) Gecko/20121016 Thunderbird/16.0.1 |
Il 18/11/2012 23:00, Stefan Priebe ha scritto:
> Hi Paolo,
>
> Am 06.11.2012 23:42, schrieb Paolo Bonzini:
>>
>>> i wantes to use scsi unmap with rbd. rbd documention says you need to
>>> set discard_granularity=512 for the device. I'm using qemu 1.2.
>>>
>>> If i set this and send an UNMAP command i get this kernel output:
>>
>> The discard request is failing. Please check why with a breakpoint on
>> rbd_aio_discard_wrapper or scsi_handle_rw_error for example.
>>
>> Paolo
>
> I'm sorry the discard requests aren't failing. Qemu / Block driver
> starts to cancel a bunch of requests.
That is being done in the kernel (the guest, I think) because the UNMAPs
are taking too long.
Paolo
> [ 39.577194] sd 2:0:0:1: [sdb]
> [ 39.577194] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
> [ 39.577194] sd 2:0:0:1: [sdb]
> [ 39.577194] Sense Key : Aborted Command [current]
> [ 39.577194] sd 2:0:0:1: [sdb]
> [ 39.577194] Add. Sense: I/O process terminated
> [ 39.577194] sd 2:0:0:1: [sdb] CDB:
> [ 39.577194] Write same(16): 93 08 00 00 00 00 04 7f ff f7 00 62 00 09
> 00 00
> [ 39.577194] end_request: I/O error, dev sdb, sector 75497463
- [Qemu-devel] scsi-hd with discard_granularity and unmap results in Aborted Commands, Stefan Priebe - Profihost AG, 2012/11/06
- Re: [Qemu-devel] scsi-hd with discard_granularity and unmap results in Aborted Commands, Paolo Bonzini, 2012/11/06
- Re: [Qemu-devel] scsi-hd with discard_granularity and unmap results in Aborted Commands, Stefan Priebe, 2012/11/07
- Re: [Qemu-devel] scsi-hd with discard_granularity and unmap results in Aborted Commands, Stefan Priebe, 2012/11/18
- Re: [Qemu-devel] scsi-hd with discard_granularity and unmap results in Aborted Commands,
Paolo Bonzini <=
- Re: [Qemu-devel] scsi-hd with discard_granularity and unmap results in Aborted Commands, Stefan Priebe - Profihost AG, 2012/11/19
- Re: [Qemu-devel] scsi-hd with discard_granularity and unmap results in Aborted Commands, Paolo Bonzini, 2012/11/19
- Re: [Qemu-devel] scsi-hd with discard_granularity and unmap results in Aborted Commands, Stefan Priebe - Profihost AG, 2012/11/19
- Re: [Qemu-devel] scsi-hd with discard_granularity and unmap results in Aborted Commands, Paolo Bonzini, 2012/11/19
- Re: [Qemu-devel] scsi-hd with discard_granularity and unmap results in Aborted Commands, Stefan Priebe - Profihost AG, 2012/11/19
- Re: [Qemu-devel] scsi-hd with discard_granularity and unmap results in Aborted Commands, Paolo Bonzini, 2012/11/19
- Re: [Qemu-devel] scsi-hd with discard_granularity and unmap results in Aborted Commands, Stefan Priebe - Profihost AG, 2012/11/19
- Re: [Qemu-devel] scsi-hd with discard_granularity and unmap results in Aborted Commands, Paolo Bonzini, 2012/11/19
- Re: [Qemu-devel] scsi-hd with discard_granularity and unmap results in Aborted Commands, Stefan Priebe - Profihost AG, 2012/11/19
- Re: [Qemu-devel] scsi-hd with discard_granularity and unmap results in Aborted Commands, Paolo Bonzini, 2012/11/19