This page contains an overview of the machine and an everyday log of what is being done. Later there will be more accurate documentation.
The machine has 3 disks.
See description in this graph below.
.------------------------------------------. | M.2 Disk 250GB | |------------------------------------------| .----------| Main system disk - boot / | SW RAID1 | | operating system |-------------------------------------------------------------. | | /swap | | | | /ahome (admin home separated from users) | | | '------------------------------------------' | | | | SW RAID1 | | .----------------------------------------. .----------------------------------------. | | | U.2 disk 1 960GB | | U.2 disk 2 960GB | | | |----------------------------------------| |----------------------------------------| | | | - User folders /home 700GB |<---------------->| - User folders /home 700GB | | | | -------------------------------------- | SW RAID1 | -------------------------------------- | | --------->| - copy of boot disk (bootable) / 100GB | | - copy of boot disk (bootable) / 100GB |<---' | copy of /ahome 100GB260GB |<---------------->| copy of /ahome 100GB | '----------------------------------------' '----------------------------------------' .------------------------------------------------. __________ | RAID6 storage - 8x 12TB disks /disk | __________ [_|||||||_°]|------------------------------------------------|[_|||||||_°] [_|||||||_°]| - 7x 12TB in RAID6 -> 60TB (50-55 usable) |[_|||||||_°] [_|||||||_°]| - 1x 12TB spare |[_|||||||_°] '------------------------------------------------'
One can login to the machine as it does with aurora.
Additionally admins can login to a separate monitor machine to check the status of hardware components. This machine will also send warnings in case of issues.
____ __ | | |==| .------Admins------>|____| | | HW Monitor | /::::/ |__| | | __ _ |<monitoring> o [__]|=| v /|\ /::/|_| ________ / \ |==|=====| Own laptop / teddi | | | | | | | | | | | ALICE new machine '--Researchers-->| | | | |====°| |__|_____|
Florido will take care of OS installation and hardware maintenance/monitoring. This info will be shared with ALICE admins. ALICE admins will have access as root and control any parameter they want.
mkfs.xfs -f -d su=1m,sw=5 -L alicedisk /dev/sda
su=1m | 1MB strip size |
---|---|
sw=5 | 5 RAID disks (+2 parity) |
-L alicedisk | xfs label |
/dev/sda | the raid shown as a device to the kernel |
/disk
# RAID disk UUID=0d4a40e5-084e-404f-9219-6c3645929ec2 /disk xfs rw,seclabel,relatime,attr2,inode64,sunit=2048,swidth=10240,noquota 0 0
/opt/MegaRAID/storcli/
storcli
in root .bashrcstorcli /c0 add vd r6 name=alicedisk drives=133:0-6 Strip=1024
/c0/v0
storcli /c0/e133/s7 add hotsparedrive