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Apr
12
comment Struggling to remove a faulted ZFS pool on Centos 7 using zpool
ZFS doesn't support nested vdevs. Vdevs can only contain files or disks, not other vdevs. And as I said, a 20 disk wide vdev is too wide for a production server.
Apr
11
comment Struggling to remove a faulted ZFS pool on Centos 7 using zpool
1) Just overwrite the disks (e.g. with zeros) to get rid of all data. 2) I hope this was just for testing and you're not intending to run a 20-disk wide vdev in production, which is way too large. Split it up into at least 2 vdevs.
Mar
23
comment Seeing much less usable space than expected with new volume using ZFS on Centos 7
Are you using ZFS on the disks or are the disks partitioned and you run ZFS on the partitions? Unrelated side note: 15*8TB in a RAIDZ2 will take ages to resilver. I would recommend splitting that up into two vdevs (maybe add one or three additional disks).
Feb
21
awarded  Popular Question
Feb
10
comment Mountable deduplicating container
You can use any encryption solution e.g. dm-crypt and any backup solution that takes care of efficiently storing a history of files e.g. rsnapshot which uses hard links for file-based deduplication.
Feb
2
comment linux + increase temporary the /tmp partition for installation
Almost, it's: umount /tmp
Feb
2
comment linux + increase temporary the /tmp partition for installation
Yes. If you don't want it permanently no need to mess with fstab in the first place. Just do the mount on the command line: mount -t tmpfs tmpfs /tmp -o size=2G. Adjust the 2G to your needs.
Feb
2
comment linux + increase temporary the /tmp partition for installation
The UUID is only required for swap, not for the tmpfs. If you already have swap set up you can ignore that line. Tmpfs doesn't require a UUID because it's not a disk partition. And you can't use that UUID. Find out your UUIDs with lsblk -f.
Feb
2
comment linux + increase temporary the /tmp partition for installation
See How can I set up overflow /tmp partition? and man 5 tmpfs
Feb
2
comment Is there an Evergreen Linux distribution?
You can use unattended-upgrades (at least on Debian derivatives) or just use a cron job for a general solution. No need for a dedicated distro.
Feb
2
comment linux + increase temporary the /tmp partition for installation
Mount /tmp as tmpfs. Or maybe you can utilise the (existing) /dev/shm using symlinks.
Feb
1
comment Why do I have so many unnecessary packages?
@RuiFRibeiro debfoster has been deprecated more than ten years ago.
Feb
1
comment How to delete huge files from linux
echo "" does write a newline to the file. To truncate it use :> <file> or echo -n > <file> (if supported).
Feb
1
answered How to set the Default gateway
Jan
27
comment Can I run 1 install on different PCs?
It depends. Read up the system/hardware requirements of the version of CentOS you intend to run and compare that with the specs of the machines in question. Then you have your answer.
Jan
27
comment How can I add new character after each line?
I can't reproduce your issue. What version of awk and what OS are you using? What's the output of printf '%s\n%s\n' foo bar | awk '{print $0"A"}'?
Jan
27
comment How to use cp -u on a Solaris system which does not support the -u option?
If your shell supports the if [ "$src" -nt "$dst ]; then … construct you can use that one (however, not it's not in POSIX). Do you have pax or rsync available? That might be the easiest solution.
Jan
26
answered How to keep gnuplot-x11 graph window open until manually closed?
Jan
25
comment Connect to a pc which is in external network using ssh
This question is unintelligible. You might want to add more details or rephrase it to increase the chance of getting a response. As I understand you want to connect to a host with a certain IP address (68.10.25.24) via ssh? What's wrong with ssh 68.10.25.24?
Jan
25
revised bash multi-threads help require
Fix formating