2
votes
How can I zero out only the USED space on a storage drive?
Zeroing out non-zero bytes is likely to be error prone and not significantly faster - indeed it's likely to be slower and you will need to read the whole disk to determine what needs to be read.
If ...
- 69.6k
1
vote
Accepted
disk util is very high + what the proactive steps we can do in order to minimize it
From what I see in vmstat (when the machine is loaded) you have serious amount of I/O operations, you have big amount of interrupts (usually for again I/O operations) and you have significant ...
- 5,702
1
vote
How to test for ext4 Partition? Not ext4 Filesystem
The mkpart command does not actually create the file system: the fs-type parameter [ext4 in your case] will simply be used by parted to set partition type GUID for GPT partitions or partition type ID ...
- 6,210
1
vote
Optimize file system for parallel read for HDD
I managed to find solution, making large cluster for ext4 did not help at all but command to read ahead have:
blockdev --setra 65536000 /dev/sdc
Now I tested it and average speed with 7 nodes that ...
- 11
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