Bug 831102
| Summary: | add the ability to set a wwn for SCSI disks | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Paolo Bonzini <pbonzini> |
| Component: | qemu-kvm | Assignee: | Paolo Bonzini <pbonzini> |
| Status: | CLOSED ERRATA | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 6.3 | CC: | acathrow, areis, bsarathy, dyasny, juzhang, mazhang, minovotn, mkenneth, pbonzini, sluo, virt-maint, wdai |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | qemu-kvm-0.12.1.2-2.331.el6 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | 831099 | Environment: | |
| Last Closed: | 2013-02-21 07:36:53 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | |||
| Bug Blocks: | 831099, 833566 | ||
This request was not resolved in time for the current release. Red Hat invites you to ask your support representative to propose this request, if still desired, for consideration in the next release of Red Hat Enterprise Linux. This request was erroneously removed from consideration in Red Hat Enterprise Linux 6.4, which is currently under development. This request will be evaluated for inclusion in Red Hat Enterprise Linux 6.4.
Reproduce this issue on qemu-kvm-0.12.1.2-2.295.el6.x86_64 host.
host info:
# uname -r && rpm -q qemu-kvm
2.6.32-325.el6.x86_64
qemu-kvm-0.12.1.2-2.295.el6.x86_64
Steps of reproduce:
1.# /usr/libexec/qemu-kvm -device scsi-cd,?
2.# /usr/libexec/qemu-kvm -device scsi-hd,?
3.# /usr/libexec/qemu-kvm -device scsi-disk,?
Result of reproduce:
There is no new element <wwn> property, QEMU did not allow to set new element <wwn> (just like setting serial number) for the virtual disk (scsi-disk, scsi-hd, and scsi-cd).
--------------------------------------------------------------------------------
I also tried this issue on qemu-kvm-0.12.1.2-2.320.el6.x86_64.
host info:
# uname -r && rpm -q qemu-kvm
2.6.32-325.el6.x86_64
qemu-kvm-0.12.1.2-2.320.el6.x86_64
Steps:
- scenario 1: check QEMU support.
# /usr/libexec/qemu-kvm -device scsi-cd,?
# /usr/libexec/qemu-kvm -device scsi-hd,?
# /usr/libexec/qemu-kvm -device scsi-disk,?
- scenario 2: set <wwn> and serial for the scsi-hd/scsi-cd/scsi-disk.
1.boot guest with setting <wwn> to scsi-hd/scsi-cd/scsi-disk.
eg:...-drive file=/home/my-data-disk.qcow2,if=none,id=hd,format=qcow2,readonly=on,cache=none,werror=stop,rerror=stop -device virtio-scsi-pci,id=scsi0 -device scsi-hd,bus=scsi0.0,wwn=0x5000c50015ea71ad,serial=ababab,drive=hd,id=sluo
2.check info qtree in QEMU monitor.
(qemu) info qtree
bus: main-system-bus
...
dev: scsi-hd, id "sluo"
dev-prop: drive = hd
dev-prop: logical_block_size = 512
dev-prop: physical_block_size = 512
dev-prop: min_io_size = 0
dev-prop: opt_io_size = 0
dev-prop: bootindex = -1
dev-prop: discard_granularity = 0
dev-prop: ver = "0.12.1"
dev-prop: serial = "ababab"
dev-prop: wwn = 0x5000c50015ea71ad
dev-prop: removable = off
bus-prop: channel = 0
bus-prop: scsi-id = 0
bus-prop: lun = 0
...
3.check the device identification.
# ls -l /dev/disk/by-id/*
# sg_inq -p 0x83 /dev/sda (or sg_vpd)
Actual Result:
- scenario 1:
There is a new element <wwn> property (just like setting serial number) for the virtual disk (scsi-disk, scsi-hd, and scsi-cd), like:
...
scsi-block.wwn=hex64
...
- scenario 2:
after the step 3,
# ls -l /dev/disk/by-id/*
lrwxrwxrwx. 1 root root 10 Oct 10 12:03 /dev/disk/by-id/dm-name-VolGroup-lv_root -> ../../dm-0
lrwxrwxrwx. 1 root root 10 Oct 10 12:03 /dev/disk/by-id/dm-name-VolGroup-lv_swap -> ../../dm-1
lrwxrwxrwx. 1 root root 10 Oct 10 12:03 /dev/disk/by-id/dm-uuid-LVM-HmPt8xgZkjMqw4gElRoMF639kEfXuu6v9fUwez0ZmWqIby59Qv8ESIXpCPFjN8EX -> ../../dm-1
lrwxrwxrwx. 1 root root 10 Oct 10 12:03 /dev/disk/by-id/dm-uuid-LVM-HmPt8xgZkjMqw4gElRoMF639kEfXuu6vwBADmP9G1GqMNIb7wL7hb3YIz4e3N5oa -> ../../dm-0
lrwxrwxrwx. 1 root root 9 Oct 10 12:03 /dev/disk/by-id/scsi-0QEMU_QEMU_HARDDISK_ababab -> ../../sda
# sg_inq -p 0x83 /dev/sda
VPD INQUIRY: Device Identification page
Designation descriptor number 1, descriptor length: 10
designator_type: vendor specific [0x0], code_set: ASCII
associated with the addressed logical unit
vendor specific: ababab
Expected Results:
- scenario 2:
after step 3,
1.When the wwn property is given, a new link should appear in /dev/disk/by-id, like: /dev/disk/by-id/wwn-0x5000c50015ea71ad -> ../../sda
2.when run "sg_inq -p 0x83 /dev/sda" (or sg_vpd) will show something like this:
VPD INQUIRY: Device Identification page
Designation descriptor number 1, descriptor length: 10
designator_type: vendor specific [0x0], code_set: ASCII
associated with the addressed logical unit
vendor specific: ababab
[0x5000c50015ea71ad] <----should display the <wwn>
Base on above, this issue did not fix correctly, so re-assigned it. Please correct me if any mistake.
Best Regards.
sluo
*** Bug 864845 has been marked as a duplicate of this bug. *** Reproduced this bug on qemu-kvm-0.12.1.2-2.316.el6.x86_64.rpm Reproduce Steps: 1: check QEMU support. # /usr/libexec/qemu-kvm -device scsi-cd,? [root@m1 qemu-kvm-316]# /usr/libexec/qemu-kvm -device scsi-cd,? scsi-cd.drive=drive scsi-cd.logical_block_size=uint16 scsi-cd.physical_block_size=uint16 scsi-cd.min_io_size=uint16 scsi-cd.opt_io_size=uint32 scsi-cd.bootindex=int32 scsi-cd.discard_granularity=uint32 scsi-cd.ver=string scsi-cd.serial=string scsi-cd.channel=uint32 scsi-cd.scsi-id=uint32 scsi-cd.lun=uint32 # /usr/libexec/qemu-kvm -device scsi-hd,? # /usr/libexec/qemu-kvm -device scsi-disk,? ... scsi-hd and scsi-disk no wwn property too. Verified this bug on:qemu-kvm-0.12.1.2-2.334.el6.x86_64&2.6.32-335.el6.x86_64 refer to comment #8 steps: 1: check QEMU support. # /usr/libexec/qemu-kvm -device scsi-cd,? # /usr/libexec/qemu-kvm -device scsi-hd,? # /usr/libexec/qemu-kvm -device scsi-disk,? all above command got wwn property: scsi-cd.ver=string scsi-cd.serial=string scsi-cd.wwn=hex64 scsi-cd.channel=uint32 ... scsi-hd.serial=string scsi-hd.wwn=hex64 scsi-hd.removable=on/off ... scsi-disk.serial=string scsi-disk.wwn=hex64 scsi-disk.removable=on/off 2: check info qtree in QEMU monitor (qemu) info qtree ... bus: scsi0.0 type SCSI dev: scsi-cd, id "sluo" dev-prop: drive = hd dev-prop: logical_block_size = 512 dev-prop: physical_block_size = 512 dev-prop: min_io_size = 0 dev-prop: opt_io_size = 0 dev-prop: bootindex = -1 dev-prop: discard_granularity = 0 dev-prop: ver = "0.12.1" dev-prop: serial = "ababab" dev-prop: wwn = 0x5000c50015ea71ad bus-prop: channel = 0 3: check the device identification. # ls -l /dev/disk/by-id/* got like this: /dev/disk/by-id/wwn-0x5000c50015ea71ad -> ../../sr0 so this bug was fixed. add check the device identification qemu-kvm-0.12.1.2-2.334.el6.x86_64
boot guest with "-drive file=/root/image/storage_0.qcow2,if=none,id=hd,format=qcow2,readonly=on,cache=none,werror=stop,rerror=stop -device virtio-scsi-pci,id=scsi0 -device scsi-hd,bus=scsi0.0,wwn=0x5000c50015ea71ad,serial=ababab,drive=hd,id=sluo"
check disk property.
#sg_inq -p 0x83 /dev/sdb
result:
[root@qemu-test ~]# sg_inq -p 0x83 /dev/sdb
VPD INQUIRY: Device Identification page
Designation descriptor number 1, descriptor length: 10
designator_type: vendor specific [0x0], code_set: ASCII
associated with the addressed logical unit
vendor specific: ababab
Designation descriptor number 2, descriptor length: 12
designator_type: NAA, code_set: Binary
associated with the addressed logical unit
NAA 5, IEEE Company_id: 0xc50
Vendor Specific Identifier: 0x15ea71ad
[0x5000c50015ea71ad]
message correct as comment #8
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. http://rhn.redhat.com/errata/RHBA-2013-0527.html |
Description of problem: Allow to set a disk WWN. This lets virtual disks have the same stable path as a physical disk. "-device scsi-disk" (as well as scsi-hd and scsi-cd, but not scsi-block) will have a wwn property, that can be specified like wwn=0x5000c50015ea71ad. When the wwn property is given, a new link will appear in /dev/disk/by-id. In addition, "sg_inq -p 0x83 /dev/sda" (or sg_vpd) will show something like this: Designation descriptor number 1, descriptor length: 12 designator_type: NAA, code_set: Binary associated with the addressed logical unit NAA 5, IEEE Company_id: 0xc50 Vendor Specific Identifier: 0x15ea71ad [0x5000c50015ea71ad] Specifying serial and wwn properties together should also be tested.