58 votes
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Unable to write to disk but disk isn't full

You are out of inodes. It's likely that you have a directory somewhere with many very small files.
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  • 108k
13 votes
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Is disk serial readable from supermicro chassis?

There exist no way at all to (optically) read a disk serial number once the disk is inserted into the system - the holes in the front of the disk caddy are not meant to facilitate reading a serial ...
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11 votes
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LVM: Duplicate VG name VolGroup00

From the man page:- "vgrename Zvlifi-Ep3t-e0Ng-U42h-o0ye-KHu1-nl7Ns4 VolGroup00_tmp" changes the name of the Volume Group with UUID Zvlifi-Ep3t-e0Ng-U42h-o0ye-KHu1-nl7Ns4 to "VolGroup00_tmp". ......
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10 votes
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How to identify EBS volumes vs local volumes on running EC2 instance

Every EC2 instance can access a REST endpoint at the link-local address http://169.254.169.254 that provides access to metadata about that instance. Block device mapping of EBS and instance store ...
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10 votes

"Mandatory" free space on a SAN?

From what you describe, the main problem is that they decided to use a RAID5 for such a large array, which is quite a bad choice for this setup, for exactly the reason you experience: Having a 2nd ...
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9 votes

Is disk serial readable from supermicro chassis?

Supermicro is rough... But so is your hosting company!! There's no excuse for that. Ask for a credit on your monthly bill for the mistake if it caused downtime. So think of this: The disk serial ...
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  • 194k
8 votes

Cleaning up a server's C:\ drive. All known ways

In the interest of preserving the information in case the TechNet article moves, here is how to "activate" the Microsoft disk cleanup utility on server 2008 or 2008 R2: Windows Server 2008 R2 ...
8 votes
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How to use part of a disk for Storage Spaces?

TL;DR: You can't do that. If you really want to do that you have to use sort of a storage virtualization stack on top of your disks. Something like HPE VSA will use your existing partitioning and ...
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7 votes

Unable to write to disk but disk isn't full

Apparently, the OP has an answer for their particular problem. However, for completeness, the OP's symptoms can also occur if the filesystem has been remounted read only. This has happened to me ...
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6 votes
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/home /opt /tmp /usr /var on a single partition of another hard drive Debian 8

What you're looking for is bind mounts. See http://man7.org/linux/man-pages/man8/mount.8.html for details. Here is a step by step guide to moving /home, /opt, /tmp, /usr, and /var to a single ...
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5 votes
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ZPOOL replace defective disk in exported pool

I hate to say this, but do you know that you were basically adding unraided disks to your pool? The command you provided basically says, "Add another disk to pool nas and stripe it with the existing ...
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  • 194k
5 votes

Safely remove a disk from a spanned volume

I've tested this on Windows Server 2012 R2. I had a 3TB spanned volume over three 1TB disks. I just shrinked the 3TB spanned volume to 2TB in Disk management. This made all the space on the last disk ...
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  • 151
5 votes

How to list basic information about disks (cylinders, heads, sectors, sector size) on Windows 7 and 10

You can do it natively in Windows, using the Windows Management Instrumentation Command-line (WMIC) interface. In this case, the command you want is wmic diskdrive, which returns the Win32_DiskDrive ...
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4 votes

How can i create a low disk space alert on Windows Server 2012 R2 Datacenter

This right here will do ya: Event ID 2013 (Disk Is At Or Near Capacity) not getting logged To summarize, make sure you're logging disk space alerts in your event log: [HKEY_LOCAL_MACHINE\SYSTEM\...
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4 votes
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Overlapping sectors on linux volumes

That is normal, SDA2 is an extended partition, which is a special 'container' partition, that contains other partitions. An extended partitions permits you to bypass the limitation of 4 'primary' ...
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  • 128k
4 votes

How to defrag volume using mountpoint?

You can try to use a different path, not the standard one. Run in powershell: Get-Volume | fl * Find the required volume which should be optimized and copy path (it should look like - \?\Volume{...
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4 votes

How do I identify the name of disk in first slot of my server?

Disks are enumerated by path under /dev/disk/by-path/ and via WWN under /dev/disk/by-id/. The first tell you about slot number and, by matching it with WWN, enable you to determine how slot ...
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  • 43.4k
4 votes

Oracle Exalytics X4-4 server - RAID 1 volume corrupted while data sync was going on

LSI RAID controllers should let the user rebuild a RAID1 array with an uncorrectable read error on source drive, resulting in a punctured array. This, however, can be implementation dependent (ie: the ...
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4 votes

Is there some way to change windows disk size without actually increase it?

Not for a drive backed by physical media, but you can create/attach a Dynamic VHD(X) where its capacity is larger than the size it physically consumes. Disk Management is probably the easiest way to ...
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3 votes
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how to disable journaling on xfs filesystem

tune2fs is management tool for the EXT2, EXT3 and EXT4 file systems, not for the XFS filesystem. Second XFS is, as @mdpc mentioned, designed as a journaled filesystem and you can't disable ...
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  • 70.8k
3 votes

Cleaning up a server's C:\ drive. All known ways

There are two more clean up commands that help reducing system, of course after running them such updates will not be able to be uninstalled. For Service Packs: dism /Online /Cleanup-Image /...
3 votes

Cleaning up a server's C:\ drive. All known ways

A little less known but worth mentioning: Windows Update stores the updates it downloads in C:\Windows\SoftwareDistribution\Download; and they are not deleted after having been installed, thus the ...
3 votes

Re-sizing disk partition linux/vm

As already stated, you had first to resize the partition containing the logical volume, than you can proceed with LVM resize. Follow these steps: with fdisk -l -u /dev/sda take note of the current ...
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3 votes
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Group policy to auto-enable plug and play disk

Open an elevated command prompt, run diskpart. From there, run san policy=OnlineAll exit
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  • 77.2k
3 votes
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How to find who is using disk space

du -sh /* --exclude /proc --exclude /var/www Then work your way down to see where all the files are. Your logs are probably smashing the volume. Then see if there are any open files that were ...
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  • 32.2k
3 votes

get physical disk name for a file

This snippet prints the disk on which volume "H" is located. Get-Partition -DriveLetter H | Get-Disk | Format-List Edit Having a second look at your question I think I see a spanned volume over ...
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  • 6,673
3 votes
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Extending LVM Volume Groups with Physical Extents & pvresize

Answer to 1st question Please consider that the article you're basing all of your considerations is VERY outdated! Even though a clear date is not reported in the HOWTO page you linked, giving a look ...
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3 votes

ZFS on a single external HDD drive: setup / tutorial and workflow

You cannot convert an ext4 file system to a zfs one, you need to backup the data stored on the ext4 fs somewhere else, unmount the ext4 fs and create a zfs pool on the disk. This will overwrite ...
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  • 8,661
3 votes

One disk member of two Disk arrays

Is it a good idea No, and we try very hard to avoid R5 these days too by the way, please don't - stick to R6/60 and 1/10.
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  • 99.7k

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