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...ils net-tools # disbale ksm (probably not important / needed) systemctl disable ksm systemctl disable ksmtuned 3. create LVM cache #set some variables and create a raid1 array with the two SSDs VGBASE= && ssddevice1=/dev/sdX1 && ssddevice2=/dev/sdX1 && hddraiddevice=/dev/mdXXX && ssdraiddevice=/dev/mdXXX && mdadm --create --verbose ${ssdraiddevice} --level=mirror --bitmap=none --raid-devices=2 ${ssddevice1} ${ssddevice2} # create PV and extend VG pvcreate ${ssdraiddevice} && vgextend ${VGBASE} ${ssdraiddevice} # create slow LV on HDDs (use...

I have a p4 motherboard with 2 ide interfaces, I connect 2 40 GB drives as hda and hdc, I install Centos 4 from a CDROM, and partition the drives as 2 x raid partition each plus a swap partition on hda, the make md0 and md1 to install /boot and / respectively. Install goes well, everything looks great, go to reboot from drives, and all I get is "grub" but no boot. I have tried this ten

Is there a way of checking an XFS filesystem for clean/dirty status while mounted? One of the checks we've long performed is an FS-level error check. This is *not a full-on fsck*, this is "asking the file system if it noted any problems". This is done while the file system is mounted and "hot". For example, here's how we'd check an ext* partition: # debugfs

Dear CentOS-Community, we have a server with four hard drives that are configured as raid10 (/dev/sda). Now, /home and /root are almost full. Therefore, we decided to buy four additional hard drives that should configured also as raid 10 (/dev/sdb). I want to use LVM to extend disk space for root and home. My (successful) test procedure in a virtual environment looks like this: 1. devide

...important / needed) > systemctl disable ksm > systemctl disable ksmtuned > > 3. create LVM cache > > #set some variables and create a raid1 array with the two SSDs > > VGBASE= && ssddevice1=/dev/sdX1 && ssddevice2=/dev/sdX1 && > hddraiddevice=/dev/mdXXX && ssdraiddevice=/dev/mdXXX && mdadm --create > --verbose ${ssdraiddevice} --level=mirror --bitmap=none --raid-devices=2 > ${ssddevice1} ${ssddevice2} > > # create PV and extend VG > > pvcreate ${ssdraiddevice} && vgextend ${VGBASE} ${ssdraiddevice} > &...

...; systemctl disable ksm > systemctl disable ksmtuned > > 3. create LVM cache > > #set some variables and create a raid1 array with the two SSDs > > VGBASE= && ssddevice1=/dev/sdX1 && ssddevice2=/dev/sdX1 && > hddraiddevice=/dev/mdXXX && ssdraiddevice=/dev/mdXXX && mdadm > --create --verbose ${ssdraiddevice} --level=mirror --bitmap=none > --raid-devices=2 ${ssddevice1} ${ssddevice2} > > # create PV and extend VG > > pvcreate ${ssdraiddevice} && vgextend ${VGBASE} ${ssdra...