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25 views

What is the folder “.10117”? [on hold]

I just installed Linux Mint 17.1 on a 32 GB SSD, and 9.9 GB are occupied by the folder ".10117". I'm wondering what it is, because unless it's crucial, I really need that space. Inside of it are two ...
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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 ...
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0answers
30 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 ...
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0answers
14 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, ...
1
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1answer
72 views

Permission denied when trying to access mounted windows NFS

Full disclosure: I'm a complete noob with NFS and have very little idea what I'm doing. After hours of googling, I ended up here. I am trying to mount an NFS folder that I have set up on a WIN08 ...
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
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1answer
27 views

Performance of `tar -xf` (block size related)

I'm recently working on optimizing the performance of tar -xf, i.e. untar a file. I notice that under default settings, tar -xf calls writes to write 10 KiB output at a time in chunks. However, this ...
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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: ...
1
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1answer
33 views

ZPool export/import error

A backup/clone script of ours was recently ran. It normally only clones the rpool and renames in rpoolA. Something must've changed as it found another one of our pools that it shouldn't have. It ...
2
votes
1answer
50 views

What should I consider when choosing a filesystem for a personal disk archive / cold storage?

I have a few TB of media files that never changes and that I need to store safely. Since it's a personal business it's overkill to set up a disk server et cetera, so I use the simple solution of ...
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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.
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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 ...
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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 ...
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 ...
0
votes
1answer
84 views

How to benchmark memory in an embedded linux device?

Is there a generic utility to benchmark external memory device (eMMC, DDR) throughput on an embedded device (e.g. raspberry pi)? memtester, bonnie, bonnie++, memtest, dd? I've been running into ...
10
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3answers
591 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 ...
1
vote
3answers
95 views

Store stdout and stderr in file, then recreate the output later

I've redirected output to a file like so: $ ./test.bash 2> >(sed 's/^/stderr: /' >> output) > >(sed 's/^/stdout: /' >> output) $ cat output stdout: Hello World! stderr: ...
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0answers
54 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 ...
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0answers
92 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 ...
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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
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 ...
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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 ...
5
votes
1answer
2k views

“Found duplicate PV”

SERVER:~ # pvs Found duplicate PV Wb0b2UTCKtpUtSki0k2NnIB24qNj4CEP: using /dev/mapper/36005076304ffc2500000000000004903 not /dev/mapper/36005076304ffc2990000000000004903 PV ...
0
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0answers
421 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 ...
1
vote
1answer
67 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 ...
3
votes
1answer
80 views

How limit the storage space for a user?

I want to have a user that can store a limited amount on its account.
4
votes
1answer
107 views

What are the implications of using an inode_ratio of 16384 in terms of storage use on ext4?

I'm assuming that this means that if the average file stored (including directories etc) is less than 16384 bytes, it may be possible to run out of inodes before using the full storage capacity of the ...
2
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3answers
1k views

Mount same disk to two linux machines - SAN/NAS

I do not know anything from storage and filesystems that's why i have created this question. I want to mount the same disk to two linux machines and both machine must be able to read/write on the ...
2
votes
1answer
51 views

Ways to store data for command line API

I am developing an API in Unix environment for virtual machines. I have to store some information in a table about virtual machines. Currently I am using python dictionary of virtual machine objects ...
2
votes
0answers
119 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 ...
0
votes
1answer
584 views

Why the size of an empty directory in Linux is 4KB? [duplicate]

I'm using Ubuntu 14.04 and I made an empty directory on /tmp with the mkdir command: cd /tmp mkdir foo and then I checked it's size using ls: ls -ldh foo and the result shows that the size of ...
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0answers
48 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 ...
2
votes
1answer
195 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 ...
0
votes
1answer
232 views

Filesystem and mount point

I am confused with which path should I give to store the file. host# df -h Filesystem Size Used Avail Use% Mounted on /dev/xvda2 ...
0
votes
1answer
522 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 ...
5
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3answers
1k views

FreeBSD 10 with Root-on-ZFS using only a part of the disk

I'm having a bit of trouble here. I'll try and be as concise as possible in describing my objective: I'm setting up a storage server for my employer, using two Intel DC S3500 series 120GB solid state ...
2
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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
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0answers
713 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
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0answers
39 views

SSD seems full, but file system says otherwise [duplicate]

I'm running CentOS and have a 100GB Micron RealSSD P300. It appears that the drive is almost full, as noted by running df: Filesystem 1K-blocks Used Available Use% Mounted on /dev/sda3 ...
3
votes
1answer
461 views

Protecting data against bit rot

I have realized that I need to protect all of my photographs against bit rot (file corruption occurring at random due to errors in hard drives or network transfer). I recently discovered par2 which ...
2
votes
1answer
2k views

Incremental file back up by date

Is there any backup tool that supports partial back up by date? What I mean is that I have some small drives such as on a laptop that can't hold a full copy of all the files on an external 2TB drive. ...
2
votes
1answer
780 views

Multipath to a logical volume in a staging VM

How do I configure multipath in testing VM (purpose is purely academical)? I made new logical volume, modified multipath.conf to be as follows: defaults { udev_dir /dev ...
0
votes
1answer
26 views

Hard Disk Space Shows in One Place, Shows Less in “Computer” Folder?

I have 320 Hard Disk but in the picture in Computer Properties, it says capacity is 45GB. Which is obviously not true.Anyone know why? I don't want to have less storage than I do in real life, I want ...
6
votes
1answer
4k views

Why can I not see some files in my USB stick on Windows that I can see on Linux?

I'm having a little problem with my USB stick. There are files and folders on the USB stick I can see and manipulate on my Linux machine (Fedora 20) but some of those files and folders appear nowhere ...
1
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1answer
107 views

How to use one nic for storage traffic & other for network traffic in Linux(Slackware)?

Problem I have a Linux machine (Slackware) with two network interface cards and i want to use one interface for network traffic and other for storage traffic . As this is Slackware i dont know this ...
0
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1answer
37 views

Which media to use for backing up data of my laptop? [closed]

I work at home on my laptop installed with Windows 7 & Ubuntu 13.04. I have stopped working on Windows since much time & would continue to work on Linux only. I have all my important data in ...
2
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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, ...
1
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2answers
963 views

Is it possible to manually manage a Solid State Hybrid Drive?

I'm about to buy a new laptop which has a SSHD. It stands for Solid State Hybrid Drive, which means it has a big, regular HDD with a small, usually 8GB SSD to cache frequently accessed files. Now ...
0
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1answer
4k views

What is the effect of rsync --block-size on large files?

I want to backup a few terabytes of large files (500mb to 1500mb each) to a backup server (BULK storage) via rsync. For this I use the following command (updated with suggestions from @Gilles): ...