Questions tagged «block-device»


3
LVM,设备映射器,软件突袭和阻止设备的预读设置-什么是胜利?
我一直试图在这个问题上找到一个直截了当的答案,但事实证明它是难以捉摸的。这个问题和它的答案是接近,但并没有真正给我,我想细节。让我们从我认为我所知道的开始。 如果您具有标准块设备并运行,sudo blockdev --report您将获得以下内容: RO RA SSZ BSZ StartSec Size Device rw 256 512 4096 0 500107862016 /dev/sda rw 256 512 4096 2048 399999238144 /dev/sda1 rw 256 512 1024 781252606 1024 /dev/sda2 现在,您决定--setra在任何分区上使用256更改为默认值128 ,它会在整个块设备上发生,如下所示: sudo blockdev --setra 128 /dev/sda1 sudo blockdev --report RO RA SSZ BSZ StartSec Size Device rw …


1
带有blktap磁盘(“ tap:aio:”)的Xen 4.1主机(dom0)无法连接
在带有dom0 xen-4.1的Ubuntu Precise股票内核的xen-4.1中使用blktap时出现问题。 我得到: [ 5.580106] XENBUS: Waiting for devices to initialise: 295s...290s. ... [ 300.580288] XENBUS: Timeout connecting to device: device/vbd/51713 (local state 3, remote state 1) 和一些系统日志行: May 17 13:07:30 localhost logger: /etc/xen/scripts/blktap: add XENBUS_PATH=backend/tap/10/51713 May 17 13:07:31 localhost logger: /etc/xen/scripts/blktap: Writing backend/tap/10/51713/hotplug-status connected to xenstore. 与tap:aio:磁盘行。文件:/有效。 disk …
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