Questions tagged [mkfs]
The mkfs tag has no usage guidance.
33
questions
0
votes
1
answer
388
views
Mounted .img file does not clear up disk space when files are deleted
I have a requirement to use more inodes than normally available on most file systems. Therefore, I create and mount a ext4 filesystem with a custom inode setting:
dd if=/dev/zero of=loop0.img bs=1MB ...
- 302
0
votes
0
answers
800
views
mkfs + any solution for “could not read block” or disk replacing
we doing mkfs on the disk sda as the following
mkfs.ext4 -j -m 0 /dev/sda -F
mke2fs 1.42.9 (28-Dec-2013)
Warning: could not erase sector 2: Attempt to write block to filesystem resulted in short ...
- 559
4
votes
1
answer
2k
views
mkfs.ext4 error with option -O ^64bit
When I run /sbin/mkfs.ext4 -O ^64bit /dev/app/mysqldata command in a script it gives me below error:
nd(): null: With return code "1", Output from: "/sbin/mkfs.ext4 -O ^64bit /dev/app/...
- 153
2
votes
1
answer
726
views
How can I create disk for smaller files with good read/write speeds?
I'm trying to find the best way to store lots of small files on a volume, without hitting the inode limits. I created a new drive with:
sudo mkfs.ext4 -N 100000000 /dev/device
and this correctly ...
- 1,124
0
votes
1
answer
791
views
mkfs + xfs + what is the right mkfs cli in order to create xfs file-system on huge disk
We need to create xfs file-system on kafka disk
The special thing about kafka disk is the disk size
kafka disk have 20TB size in our case
I not sure about the following mkfs , but I need advice to ...
- 461
1
vote
0
answers
233
views
Using Mkfs.xfs and setting the version information
When I use mkfs.xfs it is not enabling NLINK.
I have another drive in the machine that is set up the exact what I need this drive setup and the only difference is NLINK on one and not on the other. ...
- 311
4
votes
0
answers
866
views
Format new parition of drive with xfs version 4 in Linux
I am working on an arcade machine and it cannot be updated unfortunately. A drive has corrupted data on it and in order to delete it I need to re-partition that drive. (I know it's the data and not ...
- 311
2
votes
1
answer
847
views
DRBD Over LVM MKFS and accessing device
I admit I am in the experimental stage at this point, but as I read the documentation, this shouldn't be a problem. I am configuring DRBD over LVM.
As I understand the drbd00.res file, I should be ...
- 27
-1
votes
2
answers
9k
views
getting "/dev/sdb is apparently in use by the system" after adding an independent disk to the machine
In my centos7 when I add and partition a new disk to the machine and try to make files system on top of it , I get this annoying error message
/dev/sdb is apparently in use by the system; will not ...
- 11
0
votes
1
answer
231
views
mkfs with condition VIA ssh
I want to create filesystem on remote machines VIA ssh in my bash script
disk=sdg
the following line is from my bash script
ssh $IP " [[ ` lsblk -f | grep $disk | awk '{print NF}' ` -eq 1 ]] &...
- 461
2
votes
1
answer
4k
views
How to know if some data already exists on a device disk?
The simple way to check if disk include filesystem is to do:
mount /grid/sdb /mnt
and if sdb or other /dev/sdx have file-system then mount will be succeeded, if not. Probably file system exists!
...
- 461
1
vote
0
answers
466
views
lvcreate mount previously removed Logical Volume, cento 7
So this is what i want to achieve,
Unmount home partition at /home
Remove home logical volume /dev/cl/home
create new home logical volume from the same volume
group cl and name home
make xfs ...
- 137
0
votes
1
answer
520
views
After creating RAID6 unit mkfs.xfs takes forever
We have a computing cluster with a relatively large storage system with RAID-6.
The are 22 disks in this unit and each disk is 3TB (almost 20*3=60 TB). Recently many of the drives failed and rebuild ...
- 1
0
votes
1
answer
501
views
View extended options that were passed into mkfs.ext4
I am working with two block devices in a situation where one works with a certain configuration and the other does not. I assume this must be related to subtle differences in the extended options that ...
- 666
1
vote
1
answer
157
views
Create xfs system with mfks
I'am following a guide to install Zenoss which asks me to create a xfs system.
To do this I need to run the following command:
mkfs -t xfs Partition
The guide says as follows:
'Replace Partition ...
- 11
4
votes
0
answers
1k
views
Can't stop and reformat /dev/md0
I want to reformat /dev/md0, which is a RAID0 array consisting of 4 disks (sd[bcde]). However, when I tried to run the command mke2fs, I received the following error message:
/dev/md0 is apparently ...
- 51
1
vote
1
answer
305
views
Why use dir_index, filetype, and sparse_super with LUKS volumes?
I have been reviewing various HOWTOs and blog posts about encrypted LUKS volumes formatted with ext3. Every single document specifies mkfs with: -O dir_index,filetype,sparse_super and not one of them ...
- 111
0
votes
0
answers
40
views
Order of execution: First file system, then array vs. first array, then file system
Suppose I have two HDDs, same manufacturer, same model, same attributes (volume, speed, cache, ...). Both are equally partitioned. I want to have a level one array of two disks with one ext4 partition....
- 137
3
votes
2
answers
2k
views
mkfs on raw software raid device or partition
I am making a huge RAID10 device (8 TB) for storage on CentOS. I have created the 4 partitions on my 4 physical hard disks and have created the raid device /dev/md2 out of those 4 partitions.
Now it'...
- 376
0
votes
2
answers
1k
views
running mke2fs with limited memory
I'm working on a computer with very little memory (128MB) - for my application I need to format large drives (4TB)
I'm able to format greater than 2TB disks, up to about 2.5TB, but beyond that I'm ...
- 697
2
votes
2
answers
728
views
RAID issues - running mkfs on /dev/md0
I had some issues mounting my RAID array in that an error was thrown saying that an ext3 filesystem could not be found on /dev/md0.
So, maybe stupidly, i ran mkfs -t ext3 /dev/md0 - has this ...
- 123
1
vote
2
answers
2k
views
CentOS: Set number of inodes in ext4 on Install
During installation of CentOS 6 I would like to set the number of inodes created on the ext4 partitions. Is there a way to do this? I have been unable to locate a solution.
Example use case: I know ...
- 11
5
votes
1
answer
2k
views
How to create btrfs RAID-1 filesystem (assertion error in mkfs.btrfs)?
I tried to make a btrfs RAID-1 filesystem in "degraded mode" by following the btrfs UseCases instructions but hit a fatal assertion error. Why is this failing, and is there any workaround?
The ...
- 647
1
vote
1
answer
2k
views
Formatting drive as XFS on Centos 5.5
We've got a Centos 5.5 server with 2 array's. One is standard ext3 mounted as /, the other is an SSD array that we are attempting to format as XFS before moving our MySQL database to it.
I've ...
- 11
2
votes
1
answer
1k
views
get mkfs.xfs options from existing xfs filesystem
I set up a new server last week, did some testing with different mkfs.xfs options on mdadm raid5, i finally found some statisfying mkfs options.
Now i am about to set up a new server having exactly ...
- 1,182
15
votes
7
answers
185k
views
mkfs fails complaining that: "/dev/sdb is apparently in use by the system; will not make a filesystem here"
This is Ubuntu server 11.10.
/dev/sdb is not mounted (see outputs below) and is not used by any process that I can see. Its not used for swap as well. This is a 2nd IDE drive in the server, ...
- 630
5
votes
2
answers
12k
views
mkfs refuses to format device in the claim it's mounted when actually it is not
This is the problem:
root@ip-10-126-247-82:~# mkfs.ext4 /dev/xvda3
mke2fs 1.41.14 (22-Dec-2010)
/dev/xvda3 is mounted; will not make a filesystem here!
And this is the debugging:
root@ip-10-126-247-...
- 2,725
3
votes
2
answers
7k
views
mkfs.ext3: Wrong medium type while trying to determine filesystem size
When I try to format the /dev/drbd0 with mkfs.ext3 I get the error message:
mkfs.ext3: Wrong medium type while trying to determine filesystem
size.
I found a solution here:
http://eng....
- 33
2
votes
1
answer
611
views
Do you have to partition before running mkfs on a single partition disk?
I see that some people don't use fdisk to create a partition on /dev/sdb... what is the difference between making and not making a partition for a single partition disk?
I just added a partition on a ...
- 3,983
4
votes
1
answer
11k
views
mkfs.ext4 is taking hours to complete on 4 TB RAID 5
I am running mkfs.ext4 on top of LVM on a RAID 5, and it is taking hours to complete. It's a 3 TB, four disks setup, and I'm just doing:
mkfs.ext4 /dev/md0
My stripe size and width seem OK. How ...
- 170
3
votes
4
answers
1k
views
Speeding up creation of large ext3 filesystem on CentOS 5
We are creating a large backup ext3 partition on 16TB RAID array and the mke2fs took 2.5 hours to complete.
Are there any known tricks we can use to shorten this time?
The aim is to lower the time ...
- 839
2
votes
3
answers
2k
views
Always reserve blocks for super user when formatting a file system in Linux? Even for data only partitions?
When formatting a large partition (10TB) that will hold only application data, does it make sense to have 'reserved for the super user' space?
122065906 blocks (5.00%) reserved for the super user
...
- 3,349
14
votes
5
answers
13k
views
Which "features" of ext4 existing ext4 partition uses?
When I create ext4 filesystem, there are many "features", which I can enable and disable - like has_journal, extent, huge_file and so on. Is there any way to know, which options were used while ...
- 325