Dream of Mirror Ruins

Server Stuck at Booting with Timed out waiting for device Applies to RedHat 8.4 and later Symptoms The server connects to the storage system using a Fibre Channel card and has more than 35 LUNs. However, after the restart, booting fails with below error and enter emergency mode: Starting Switch Root...[ TIME ] Timed out waiting for device dev-mapper-rhel\x2dhome.device.[DEPEND] Dependency failed for /home.[DEPEND] Dependency failed for Local File Systems.[DEPEND] Dependency failed for Ma...

How to install a group of packages on redhat ・ How to install a group of packages with yum on Red Hat Enterprise Linux.pdf | RedHat 8 ~]# dnf grouplistUpdating Subscription Management repositories.Red Hat Enterprise Linux 8.7.0 BaseOS 240 kB/s | 2.8 kB 00:00Red Hat Enterprise Linux 8.7.0 AppStream ...

Fixing ixgbe unsupported SFP+ or QSFP module type was detected CentOS 7.6 - 3.10.0-957.27.8.2.g295089a.el7.x86_64 A server was not able to detect a new SFP module that was inserted. Digging into the kernel logs, the kernel had previously complained about this slot: ~]# lspci -vvv | grep -i net3b:00.0 Ethernet controller: Intel Corporation Ethernet Controller 10G X550T (rev 01)3b:00.1 Ethernet controller: Intel Corporation Ethernet Controller 10G X550T (rev 01)5e:00.0 Ethernet controller: I...

Installing Pacemaker Corosync Cluster on RHEL 8 RHEL 8.7 Setting Media ISO repository ・ Configuring Yum Repositories Enable High Availability Repository subscription-manager registersubscription-manager repos --enable=rhel-8-for-x86_64-highavailability-rpms Configuring Network ・ Configuring Network Bonding on RHEL 7,8 nmcli con add type bond con-name bond0 ifname bond0 bond.options "mode=active-backup,miimon=1000"nmcli con add type bond con-name bond1 ifname bond1 bond.options "mode=act...

Oracle Exadata Service Manual X7/X8/X9 Replacement: Storage Cell Server F640 Flash Card ・ How to Replace an ExadataZDLRA X7,X8,X9 Storage Cell Server F640 Flash Card (Doc ID 2362260.1).pdf | 根据更换手册，该部件可以热拔插更换，但是实际操作中，热拔插可能会导致存储节点异常重启或 IO 异常，所以建议停机更换。 更换记录： 维护前准备工作。 a) 记录故障存储节点基本信息。 ~]# ipmitool sunoem cli "show /SYS product_serial_number"~]# ipmitool sunoem cli "show /SP/network"~]# ipmitool sunoem cli "show faulty" b) 确认故障存储节点前面板 DO NOT SERVICE 灯未亮起。 ~]# cellcli -e list cell detail ...

IBM Storage System DS8870 Service Manual Perform Data Collection On Demand 适用于微码 64.xx 或以上版本 选择 Storage Facility Management ，选择相应的 Storage Facility ，在 SF Image#1 选项界面下选择 Data Collection Tasks 选择选择 Perform Data Collection On Demand… 选择选择 General PE Package 选择选择 New General Pakage , 一定要将 Auto Offload 选项取消掉，点击 OK 继续: PE Package 的收集会运行大约 20-40 分钟： 收集结束后，弹出如下窗口。全选所有文件，按 Offload 将所有文件打包 Offload 完成之后，会弹出一个提示框，表示 PE Package 的收集将会生成一个 SRC 为 BEB00010 的 Serviceable Event，点 OK 继续： ...

Seat Disk Exhaustion on VCSA Applies To VMware VirtualCenter 7.0.3 build-21477706 Cause The /storage/seat usage has reached 80%. root@localhost [ ~ ]# df -hTFilesystem Type Size Used Avail Use% Mounted ondevtmpfs devtmpfs 7.9G 0 7.9G 0% /devtmpfs tmpfs 7.9G 880K 7.9G 1% /dev/shmtmpfs tmpfs 7.9G 1.2M 7.9G 1% /runtmpfs...

About ocf pacemaker ping resource According to the /usr/lib/ocf/resource.d/pacemaker/ping, $OCF_RESKEY_timeout=6, $OCF_RESKEY_attempts=3, i.e ping -n -q -W 6 -c 3 10.210.123.1. "ocf:pacemaker:ping"OCF_RESKEY_attempts = integer [] no. of ping attempts Number of ping attempts, per host, before declaring it deadOCF_RESKEY_timeout = integer [] ping timeout in seconds How long, in seconds, to wait before declaring a ping lost Create a ping resource. pcs resource create testping ping host_list...

HPE 3PAR StoreServ Inspection showsysshowsys -dshowversionshowdateshownetshowsysmgrcheckhealth -detailcheckhealth -svc -detailshowalert -dshownodeenvshownode -dshownode -i -svcshownode -verboseshowcageshowcage -ishowpdshowpd -ishowpd -cshowpd -failed -degraded# IOPSstatpd -ni -p -devtype FCstatpd -ni -p -devtype SSDshowcpgshowcpg -rshowcpg -sagshowcpg -sdgshowcpg -d <cpg_name># CPG剩余可分配空间showspace -cpg <cpg_name># 评估容量趋势showcap -unit g -history 7dshowvvshowbat...

H3C 3PAR 8000 Service Manual Model - HP 3PAR StoreServ 8000 Replacement ・ 3PAR8000 Battery Replacement.pdf | ・ 3PAR8000 Controller Enc Powersupply Replacement.pdf | ・ 3PAR8000 Controller Node Memory Replacement.pdf | ・ 3PAR8000 Controller Node Replacement.pdf | ・ 3PAR8000 Controller Node Root Disk Replacement.pdf | ・ 3PAR8000 Disk Enc Powersupply Replacement.pdf | ・ 3PAR8000 Disk Enc Replacement.pdf | ・ 3PAR8000 Hard Drive Replacement.pdf | ・ 3PAR8000 HBA Adapter Replaceme...