On 11/4/2015 11:36 AM, Boris Epstein wrote:
Absolutely, I see your point. This was the starting point - you add the
device on the ESXi server, you reboot the VM, the VM sees the device, no
problem. Now, I ask - do I have to reboot the VM? Logically I hope there
ought to be a way for me not to have to do that - but I have yet to figure
out how to get there.
vmware esxi 5.5.0 (free, using vsphere client to manage), vm is minimal
centos 7 64bit. I added a 16gb vdisk and immediately see this in dmesg...
[155484.386792] vmw_pvscsi: msg type: 0x0 - MSG RING: 1/0 (5)
[155484.386796] vmw_pvscsi: msg: device added at scsi0:1:0
[155484.388250] scsi 0:0:1:0: Direct-Access VMware Virtual
disk 1.0 PQ: 0 ANSI: 2
[155484.391275] sd 0:0:1:0: [sdb] 33554432 512-byte logical blocks:
(17.1 GB/16.0 GiB)
[155484.391552] sd 0:0:1:0: [sdb] Write Protect is off
[155484.391556] sd 0:0:1:0: [sdb] Mode Sense: 61 00 00 00
[155484.391593] sd 0:0:1:0: [sdb] Cache data unavailable
[155484.391595] sd 0:0:1:0: [sdb] Assuming drive cache: write through
[155484.396148] sdb: unknown partition table
[155484.396356] sd 0:0:1:0: [sdb] Attached SCSI disk
and lsblk shows...
# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 32G 0 disk
....
sdb 8:16 0 16G 0 disk
...
so I can immediately...
# mkfs.xfs /dev/sdb
meta-data=/dev/sdb isize=256 agcount=4, agsize=1048576 blks
.....
# mount /dev/sdb /mnt
#
(normally, I'd partition and lvm it, this is just for demo)
I'm using a paravirtual scsi controller, and have previously installed
open-vm-tools via yum.
I then umounted it, and in vsphere deleted the vdisk and dmesg
immediately shows...
[155820.730477] vmw_pvscsi: msg type: 0x1 - MSG RING: 2/1 (5)
[155820.730481] vmw_pvscsi: msg: device removed at scsi0:1:0
[155820.754176] sd 0:0:0:0: Attached scsi generic sg0 type 0
[155820.754247] sr 2:0:0:0: Attached scsi generic sg1 type 5
I also did much the same with a CentOS 6.7 VM, also using a 'paravirtual
SCSI' vm on the same esxi host, when I added the vdisk, it immediately
shows...
# dmesg
.....
vmw_pvscsi: msg type: 0x0 - MSG RING: 1/0 (5)
vmw_pvscsi: msg: device added at scsi0:1:0
scsi 2:0:1:0: Direct-Access VMware Virtual disk 1.0 PQ: 0 ANSI: 2
sd 2:0:1:0: Attached scsi generic sg2 type 0
sd 2:0:1:0: [sdb] 33554432 512-byte logical blocks: (17.1 GB/16.0 GiB)
sd 2:0:1:0: [sdb] Write Protect is off
sd 2:0:1:0: [sdb] Mode Sense: 61 00 00 00
sd 2:0:1:0: [sdb] Cache data unavailable
sd 2:0:1:0: [sdb] Assuming drive cache: write through
sd 2:0:1:0: [sdb] Cache data unavailable
sd 2:0:1:0: [sdb] Assuming drive cache: write through
sdb: unknown partition table
sd 2:0:1:0: [sdb] Cache data unavailable
sd 2:0:1:0: [sdb] Assuming drive cache: write through
sd 2:0:1:0: [sdb] Attached SCSI disk
# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sr0 11:0 1 1024M 0 rom
sda 8:0 0 16G 0 disk
├─sda1 8:1 0 500M 0 part /boot
└─sda2 8:2 0 15.5G 0 part
├─vg_svfisc6test5-lv_root (dm-0) 253:0 0 9.6G 0 lvm /
└─vg_svfisc6test5-lv_swap (dm-1) 253:1 0 5.9G 0 lvm [SWAP]
sdb 8:16 0 16G 0 disk
and I note this VM is *not* running vmware tools
NEITHER of these two VMs required rebooting or any echo "- - -"
>/sys/scsi/.. stuffs.
--
john r pierce, recycling bits in santa cruz
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