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10
votes
3answers
585 views

Ubuntu - No space left on device (NTFS)

I have a server which stores a lot of data, I keep many nested directories with millions of files in them. While trying to move one big directory (~700GB) from one disk to another I get an error: mv ...
6
votes
1answer
63 views

How to restore an LVM container to a bigger physical partition?

The setup is an encrypted LVM container/PV that holds a few ext4 partitions. I am moving these to a new machine, but there is more room on the disk. So, I have created a bigger encrypted LVM ...
3
votes
1answer
3k views

Clear unused space with zeros (btrfs)

How to clear unused space with zeros ? (I am asking for tool for btrfs filesystem) I'm looking for something smarter than cat /dev/zero > /mnt/X/big_zero ; sync; rm /mnt/X/big_zero Like ...
2
votes
1answer
191 views

storage server all nfs users on full 666 file permissions

How can I setup a shared storage location on a storage server shared via CIFS and NFS and all files written by CIFS and all users via NFS to write files and folders with full read/write permissions ...
1
vote
1answer
35 views

To which device file is particular storage device mapped?

I noticed that I never figured this out completely. Linux maps SATA and USB (and many more kind of) storage devices to /dev/sd[a-z] device files in the order in which they were "found". Now given that ...
1
vote
1answer
66 views

Can I use fio on a mounted device?

I'm using fio to get some broad read IOPS performance data for various storage configurations like this: fio --name=readiops --filename=/dev/md1 --direct=1 --rw=randread --bs=4k --numjobs=4 ...
0
votes
1answer
33 views

Reasons why does the os have only limited information about the layout of data on hard disks

Do someone knows some reasons why the os has only limited informations about the layout of data on hard disks(with regard to locality)?
0
votes
1answer
26 views

Restricting access to an in-use disk on Solaris

I have two identical servers (Running Solaris) connected to a Sun Storedge 3100 through SCSI. I want to make a cluster out of them. The storage will be used to store a database. The Storage works ...
0
votes
1answer
520 views

Mounting LUN in AIX

I have LUN created and added to AIX, I know this because once I created the LUN and the name I gave in the IBM storage is displayed and also I used the following commands chdev -l hdisk7 -a pv=yes ...
2
votes
0answers
117 views

Inaccessible USB Mass Storage Device (Bricked Garmin device)

I've got a running GPS watch (Garmin Forerunner 210, fwiw) which recently got bricked during a firmware update. Let's assume for point of discussion that an rma is not possible, so I'd really like to ...
2
votes
0answers
137 views

Reduce cache size of flash storage devices

For various benefits Linux uses a memory cache for writes to removable stogare devices like memory sticks. This cache seems to be quite large on my system, which leads to some annoying behavior. For ...
2
votes
0answers
708 views

`crontab -e` sometimes fails with “Creation of temporary crontab file failed”

From time to time crontab -e fails on me on a Ubuntu box. It is the same for all users including the root and crontab -eu <user> under the root. Goes like this on a regular basis, a success here ...
2
votes
0answers
216 views

Set PERM_WRITE_PROTECT on an SD card

From what I read here and here I gather that there is a bit on SD cards called PERM_WRITE_PROTECT that will allow me to make an SD card read only. Is it possible to set this bit from Linux? If so, ...
2
votes
0answers
64 views

Too large cache causes disks to grind, I/O to drop

This is a followup question to my earlier problem. In short I was experiencing massive I/O drops together with not-so-violent disk grinding, and with help I found out that the big caches were the ...
2
votes
0answers
241 views

Move boot disk on SAN storage on Solaris 10

I'm looking for some infos/official docs/howto for migrating boot disks in a production enviroment server from internal disks to SAN on Solaris 10. It's possible for every kind of hw? It's also ...
2
votes
0answers
62 views

Limiting write rate of a device

How does one go about limiting the write/read rate of a device, E.G., USB drive, SD card? Motivation behind this question is covered here (superuser.com).
2
votes
0answers
237 views

How do create an encrypted system with multiple Linux distributions?

A few weeks ago I created a completely encrypted system on a notebook and must say I like the idea. It's a little bit annoying to enter the password on every boot, but it's nice to know even if I ...
1
vote
0answers
16 views

Unix (NFS Error)- 7320 Storage

I get the following errors on one of my servers: NFS op OP_OPEN got error NFS4ERR_DELAY causing recovery action NR_DELAY NFS op OP_WRITE got error NFS4ERR_STALE causing recovery action NR_STALE NFS4 ...
1
vote
0answers
744 views

I can't find tape device file inside /dev directory

I'm using tape storage drive HP LTO3 1x8 auto-loader which is connected to my server running CentOS. it is detected in CentOS correctly. cat /proc/scsi/scsi Host: scsi2 Channel: 00 Id: 01 Lun: 00 ...
1
vote
0answers
142 views

Mount an SD card over USB?

I'm currently using: insmod g_file_storage.ko file=/dev/mmcblk0p1 stall=0 removable=1 This works as I can see the device in Windows. However when it comes to changing a file, the changes are not ...
1
vote
0answers
170 views

iSCSI on startup

I've configure iSCSI but CentOS 6.3 is unable to recognize if on startup. Here is fstab config: /dev/sdb1 /home ext4 _netdev 0 0 Here is iscsi.conf ...
0
votes
0answers
29 views

Parallel vs Distributed vs Traditional File system

I am trying to understand the difference between these three file system at a very basic level. Distributed FS: HDFS Parallel FS : Lustre Tradational FS : ext4/ext3/ NTFS/FAT etc. I want to ...
0
votes
0answers
13 views

How to automate HP 3PAR in CentOS using Python?

I have worked out in windows to start 3PAR using python but i am not able to login into 3PAR in centos. Additionally how to view system,hosts, provisioning Tab(list Volumes, Virtual Volume sets, ...
0
votes
0answers
32 views

Find drive for SCSI device

This is the first time that I am working with storage devices. When I run cat /proc/scsi/scsi on my server, I have the following result: Attached devices: Host: scsi0 Channel: 00 Id: ...
0
votes
0answers
15 views

Partitions going offline and coming back online

We have Linux server that has 5 LVM partitions. In that two partitions are going offline and coming back online again and again. It is a critical server. Please help, how to resolve the issue.
0
votes
0answers
27 views

Linux (RHEL) installed on Windows Hyper-V supporting Virtual HBA

I have installed RHEL 6 on Hyper-V as a Guest machine. I have added Virtual Fibre Channel. But I cannot detect in the RHEL. I also don't know how to find it is working or not. Can anyone help me ...
0
votes
0answers
28 views

Failed to execute the iscsiadm commands

When I am using the command: iscsiadm -m discoverydb -t st -p 10.10.11.12:3260 -I be2iscsi.00:17:a4:7a:e3:34.ipv4.0 --discover -P 1 I am getting below error: scsi host1: BC_207 : MBX Cmd Failed ...
0
votes
0answers
48 views

Interpreting bonnie++ sequential throughtput results: is my unterstanding right?

I have started since years to accumulate bonnie++ stats from different systems. Here is a shot from a rather fask disk: django ssd Samsung SSD 840 EVO 1TB with hdparm write cache enabled: Version ...
0
votes
0answers
91 views

Error in adding monitors for creating object cluster in Ceph

I've tried to install and config "ceph storage cluster" for creating ceph object storage. I'm following this manual. When I try to add 3 monitors by typing the command "ceph-deploy mon create osd001 ...
0
votes
0answers
50 views

HW RAID10 without TRIM support with SSD

Recently we purchased new server for Database with 1TB x 4 SSD in Hardware RAID 10, but my Hardward RAID doesn't support TRIM so you think it is going to be big deal? Is there anyway i can do ...
0
votes
0answers
43 views

Configure CHAP login on Solaris 11.2 ISCST target for Win7 / 2003 initiator

Since a few days I try to configure a Solaris 11.2 (x64) ISCSI target to use with the Windows 7 / Windows Server 2003 ISCSI initiator client. I want to use it with a CHAP-name and a 12-character ...
0
votes
0answers
414 views

extend the storage of a beaglebone black

I've got a beaglebone black rev B (2gb storage) and I want to use it to run owncloud as a self-hosted cloud. The beaglebone comes with 2gb of storage, which means that it has just enough room for the ...
0
votes
0answers
47 views

Where is the LVM area which is not usable by LVM?

pvdisplay reports some portion of the LVM physical volume as not usable. And I need to know where this is located. To my knowledge there are ... a) space which could not be filled with an ...
0
votes
0answers
85 views

Redundant and Load Balanced storage on FreeBSD?

Back from: Load balanced & Redundant Storage on FreeBSD How do I create a (Redundant and Load Balanced) Storage based on FreeBSD? Storage should be located on (2 or more servers) providing ...
0
votes
0answers
165 views

Custom Bluetooth Configuration through terminal

I am running a Bluetooth module on my circuit for transmitting data. I want to connect this module to my Linux OS (openSUSE) and read data from it. I want to do custom configs and also custom read ...
0
votes
0answers
229 views

Can't format SSD during installation

Last night I tried to install Mandriva Linux on PC, where I have already Windows 7. In PC I've got 2 128GB SSD and 1 2TB HDD. On one SSD I installed Win7, and when I select the other empty SSD for ...