a solid-state disk (SSD)

learn more… | top users | synonyms

7
votes
1answer
564 views

What filesystem should I choose for an SSD? [duplicate]

I am going to set up a new Linux system on the SSD drive. Does the filesystem choice make a difference for them? Should I go with the default ext4, maybe try XFS, or does it just not matter?
17
votes
4answers
1k views

File system for an SSD drive

I always thought that traditional file systems, are geared and optimized for non-ssd drive, where, for instance, data locality is important, and fragmentation is problematic. Is there a file system ...
3
votes
0answers
12 views

Discover what is cached by dm-cache

I am using dm-cache successfully for quite a while now. Now I would like to know which files are being currently in the cache. I understand that dm-cache works with blocks, not files, but since there ...
3
votes
2answers
397 views

bcache on md or md on bcache

bcache allows one or more fast disk drives such as flash-based solid state drives (SSDs) to act as a cache for one or more slower hard disk drives. If I understand correctly, an SSD* could be ...
30
votes
3answers
16k views

How to know if a disk is an SSD or an HDD

I want to know whether a disk is a solid-state drive or hard disk. lshw is not installed. I do yum install lshw and it says there is no package named lshw. I do not know which version of ...
0
votes
1answer
32 views

SSD not persistent

My SSD forgets data and falls back to a previous version, I've raised this issue on the Arch forum here. Let's say I install an application and all is well. Then after a reboot it is gone, ...
0
votes
1answer
995 views

Low display resolution Ubuntu Gnome remix 12.10

I'm running Ubuntu Gnome remix 12.10 and it can't recognize my display. My HW is: Intel i3 3225 with HD 4000 onboard / is on a OCZ Vertex 4 SSD display is an old IBM Thinkvision with vga connector ...
5
votes
1answer
2k views

Installing pfSense firewall on an SSD

I was looking at creating a home firewall running pfSense (as I could not get IPCop to boot properly on my hardware). Doing a little research, however, I have some concerns with installing it onto an ...
0
votes
0answers
39 views

Intermittent, temporary freezing

I just got na SSD for my desktop, and decided I'd install Linux on it, for a change from Windows. The problem is, I've tried Ubuntu 14.04 and Fedora 20, and on both, in the install environment and ...
0
votes
0answers
70 views

BTRFS Raid1 on SD card and HDD

I have the / partition on a btrfs SD card /dev/mmcblk0p2. /boot is on vfat /dev/mmcblk0p1). It's a Raspberry Pi running Arch Linux and its fstab looks like so: /dev/mmcblk0p2 / btrfs ...
3
votes
0answers
36 views

adding encrypted /home in LVM/LUKS

I installed a new (debian) system to an SSD device. After standard install I want to mount /home on the internal HDD. To be able to ask the question, some details: On install I (manually) generated ...
1
vote
0answers
53 views

Arch/OSX - fstab options for shared /home (HFS+) on SSD

I've got an Arch and OS X install sharing an HFS+ (non-journaled) /home partition. My Arch side seems to have issues with the partition. In particular, deleting multiple files causes the drive to ...
3
votes
3answers
2k views

Will formatting my drive TRIM my SSD?

Will a standard fresh linux (Ubuntu 11.10 to be exact) install and drive re-format (full) successfully TRIM my SSD, or do I need to do something extra? I know that ext4 will TRIM blocks on erase ...
10
votes
3answers
2k views

Trim with LVM and dm-crypt

I tried to setup TRIM with LVM and dm-crypt on ubuntu 13.04 following this tutorial: http://blog.neutrino.es/2013/howto-properly-activate-trim-for-your-ssd-on-linux-fstrim-lvm-and-dmcrypt/ See the ...
1
vote
2answers
44 views

Spanning RAID over SSD and Mechanical HD

Currently I have my root (/) directory on my ssd, and my home directory on my mechanical drive. Wanting to utilize more of the ssd and hopefully get a speed benefit, I was considering spanning across ...
1
vote
0answers
14 views

Is there a distribution with an installer that can automatically do LVM over LUKS with everything aligned as needed?

http://www.void.gr/kargig/blog/2012/01/11/linux-ssd-partition-alignment-tips/ talks about aligning SSD partitions and LVM physical volumes. ...
0
votes
2answers
167 views

How to check SSD disk for errors from a Live CD?

Debian on SSD. How to check SSD disk for errors from a Live CD? Additionally, to save results to a txt file. Partitions are sdb1 /boot ext2 sdb2 root ext4 sdb3 swap Should I unmount partitions ...
0
votes
0answers
77 views

Dualboot elementaryOS & Windows 8.1 on SSD with personal files on HDD?

When I create my gaming PC I plan to dualboot Windows 8.1 with elementaryOS and my programs on an SSD. However is it possible to place my data on a HDD for both to access?
2
votes
2answers
4k views

How to check drive temperature on Linux?

I have used of hdparm -n and smartctl -A but it always seem to be a "per drive" technique as a drive may answer for only one of these tools. So, is there a standard way to get the drive temperature ...
0
votes
0answers
28 views

Should I use the discard flag when configuring the filesystem to be installed over the partitions on my SSHD?

I've recently bought a laptop with an SSHD. My guess is that most SSHDs are self-optimised, so the disk itself will handle wear-levelling issues, and I won't need to add the "discard" flag when ...
1
vote
0answers
174 views

Optimizing bcache

I have 3 HDD and 1 SSD, I have successfully mounted all drives to bcache. pavs@VAS:~$ df -h Filesystem Size Used Avail Use% Mounted on /dev/sda1 132G 35G 90G 28% / none ...
-1
votes
1answer
342 views

How to install Linux Mint 17 on SSD and have Home on HDD

I have Sony Vaio VGN-NW23NE Laptop and I'm using Linux Mint as my Operating System for about two years, I've currently Qiana. I bought a new 120 GB SSD to speed up my Laptop, but I'm confused about ...
1
vote
0answers
88 views

How to run SSD trim fstrim on btrfs when mounted multiple subvolumes?

I am using btrfs and have mounted several subvolumes (but not btrfs root). It resides on SSD partition, so I would like to use fstrim. Should I call fstrim on each mountpoint (corresponding with ...
0
votes
1answer
118 views

Wrong mount point for internal SSD

I am having a problem with mounting an internal SSD. For some reason The mounting point is chosen as /media/user/Data instead of, as specified in /etc/fstab, /mnt/Data. The according line in ...
1
vote
0answers
225 views

SSD Crash Randomly on Linux Mint 17

I'm running Mint (17 Qiana 64bit) on a fresh install on a new laptop (Dell N5110) with a new Crucial MX100 SSD and twice now the whole system has frozen up. If I switch to a text terminal (as in ...
2
votes
0answers
153 views

/dev/sda not appearing after secure erase

I decided to wipe my SSD with a secure erase before installing Arch Linux, since the Arch wiki said that it would improve performance. I followed the instructions listed on the wiki, but now when I ...
2
votes
2answers
2k views

Installing Linux Mint on a blank SSD

I've dual booted Mint and Windows 7, but I'd really like to get rid of Windows all together. And from what I understand, it's not really a true dual boot, but it's actually just running from inside ...
3
votes
2answers
268 views

How to dual boot Linux and Windows from small boot drive?

I am a Linux newbie, and I am trying to dual boot Linux Mint with Windows 7. Right now, Windows 7 boots from a small SSD, which has little extra room on it. Is there a way to set up a dual boot where ...
0
votes
1answer
73 views

Solid State drive vs. traditional hard disk in a virtual server environment

I am currently considering upgrading my virtual-hosting plan because of very bad write performance (mostly writing to a MySQL database, but I notice it also when compiling a program or copying files - ...
1
vote
1answer
47 views

How to detect exact spec of my disk on a cloud server?

I've already read a question about whether your disk is SSD or HDD. When I issued the below command I've got surprised: cat /sys/block/vda/queue/rotational The output was 1. The question is why ...
3
votes
7answers
1k views

How can I defragment my SSD on linux?

This page demonstrates that defragmentation is beneficial for SSDs. I suppose this type of defragmentation has to be trim-aware, so as to preserve the life time of the disk. How can I do that on ...
0
votes
2answers
117 views

I recently cloned my drive, while booting I have to wait at this screen which has a number of error messages

Once booted the computer works fine (debian 7 sid), no other issues. I just have to wait at this screen for around 3 minutes, unfortunate since I have an SSD. Are these error messages causing the ...
6
votes
1answer
1k views

Difference between 'sync' and 'async' mount options

What is the difference between sync and async mount options from the end-user point of view? Is file system mounted with one of these options works faster than if mounted with another one? Which ...
0
votes
0answers
26 views

PCI-e SSD - Not visible to sysstat's iostat or sar

I am attempting to get basic statistics during test runs on a server with a PCI-e attached SSD that is mounted on /dev/rssda1, however sar and other sysstat either do not log, or in the case of iostat ...
1
vote
1answer
51 views

Could I set flag “barrier=0” when using SSD?

I'm using ext4 filesystem in SSD,when mounting SSD,could I use flag "barrier=0"? I knew this flag is safe for BBU(battery backup unit),but is it safe for SSD?
1
vote
1answer
210 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
votes
2answers
71 views

Small build-in ssd in notebook can install linux?

I bought a samsung laptop series 5. There are a 24gb ssd and normal hard disk. I need to install linux ubuntu on this notebook. Can I just install the ubuntu on the build-in 24gb ssd? If not, how can ...
2
votes
0answers
38 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 ...
1
vote
1answer
43 views

How to discard/TRIM a range in an open file ?

For an SSD, I can open the row device and discard a range of pages using ioctl() with BLKDISCARD command. My question is for an open file, how to discard a range of data? and Is that depends on the ...
1
vote
3answers
107 views

Low level disk i/o on linux

Can a user level program do page level or block level I/O on SSDs? I've looked at disk devices, but am unsure if they provide this as they work only if the partition has a file system. UPDATE #1 I ...
2
votes
1answer
262 views

btrfs on SD card, what does “Btrfs detected SSD devices, enabling SSD mode” mean exactly?

I'm experimenting with using btrfs on my Debian Linux armhf system. The rfs is on a micro SD card. On bootup I get the message "Btrfs detected SSD devices, enabling SSD mode". What features does ...
0
votes
1answer
92 views

Replace USB stick boot device with SSD

I have an OpenElec based HTPC which boots from a USB stick. I would like to replace this with an SSD drive. What is the best way of copying the USB image to the SSD. Is this something that dd could do ...
4
votes
2answers
8k views

How to check the life left in SSD or the medium's wear level?

We all know that SSDs have a limited predetermined life span. How do I check in Linux what the current health status of an SSD is? Most Google search results would ask you to look up S.M.A.R.T. ...
5
votes
1answer
326 views

How to use an SSD for caching, so my hard disks can spin down?

I've got a file server with a bunch of disks running together in a BTRFS pool and want to add an SSD for caching. I'm not mainly after speeding up things, but want to catch the regular small accesses ...
0
votes
1answer
48 views

Two HDD installation [closed]

Is there any easy tutorial or guide how can I setup Debian (amd64 v. 7 + xface) on my server, but using this separation ? Separation: SSD (32GB) for system Normal HDD (1TB) for data like /var ...
2
votes
0answers
542 views

Possible issues with SSD SATA3 drive

While investigating the issue with my SATA3 SSD drive being recognized as SATA2 (for some reason had to change SATA ports to fix it) I noticed the following messages when I run: $ dmesg | grep ...
2
votes
1answer
265 views

Why does fstrim trim all of the free space on my mdraid mirror after a reboot? [duplicate]

I have a server with 2 SSDs: Model Family: Intel 520 Series SSDs Device Model: INTEL SSDSC2BW240A3F Firmware Version: 400i User Capacity: 240,057,409,536 bytes [240 GB] Sector Size: ...
6
votes
2answers
813 views

Poor random read SSD performance on Linux

I recently got an Intel 320-series SSD, and I am having difficulty achieving the advertised 38K IOPS for random 4K reads. Both with fio and my own hacked-together program, I am seeing around 6K IOPS. ...
3
votes
1answer
286 views

Can't enable TRIM on SSD

I can't enable TRIM on my newly-installed SSD. Ubuntu Server 12.04, Linux 3.11.0-15-generic. I turned TRIM on through discard setting in /etc/fstab. Also TRIM doesn't work with fstrim command. Here ...
1
vote
3answers
413 views

Mount a second ssd drive on centos - How can I figure out which is the unused drive?

I need to mount my secound ssd drive to /home2. I already created the folder /home2 - Now, how can i figure out which is the unused drive ? Is this /dev/sda or sdb ? What is the exactly thing i`ve to ...