a solid-state disk (SSD)

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3
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3answers
61 views

8G RAM and SSD - how big should the swap be?

I have a computer with 8G RAM and a 128G SSD. I don't plan hibernating. What swap size would you recommend? Would you change any swappiness? In the nearest future I'll compile programs (or even ...
6
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0answers
463 views

Over-provisioning an SSD - does it still hold? [migrated]

Multiple (but not very recent) sources suggest that ~7% of the SSD space should be left unallocated in order to reduce the drive wear. Is it still valid as for now or has the situation changed?
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2answers
40 views

Linux, SSD and swap

This article suggests not to create a swap space on an SSD drive in order to reduce its wear. On the other hand, it suggested here that swap space positively affects performance. Would it be a better ...
2
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1answer
38 views

SSD: how often should I do fstrim?

There are different sources and different practices are suggested. I found the following proposals how often one should run fstrim. run weekly by cron run daily by cron run at each boot What is ...
0
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1answer
41 views

Linux Swap Space

I have got 32GB memory. SSD and NonSSD drives. I installed linux to NonSSD drive but i prefer SSD for /var directory and i didn't create swap space because there is high memory. I know physical ...
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1answer
3k 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
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1answer
1k 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 ...
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1answer
36 views

Change Linux Bcache device type

I have accidentally configured my SSD as a backing device instead of a caching device. Simply trying either one of the following: sudo make-bcache -C /dev/sdb1 sudo make-bcache -C /dev/sdb Gives ...
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0answers
76 views

ssd caching in loop device on btrfs

I have an ssd and 2TB hard disk. The ssd is used for the root filesystem which uses only around 20G of the 120G available. Is there a way to use an image/loop on the root filesystem (btrfs) as a cache ...
0
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1answer
43 views

How to install CentOS 6.6 linux on an OCZ RevoDrive3 X2 PCI SSD

This took me a week, so here's the problem, and solution. From CentOS 6.5 onwards, the driver mvsas.ko recognizes the OCZ SSD... wrongly. It shows up as 4 small slow SSDs, instead of one big fast ...
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0answers
110 views

SSD installed, but shows as HDD in command output

Strange issue here. I have a 480GB SSD drive installed in this server. I installed it myself. I see it, it's there. But, I'm getting an incorrect output on a typically used command to determine if ...
0
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1answer
37 views

how to fetch SMART attributes in SSD?

I have a SAS SSD and I want to know few things like "Perc_Lifetime_Remain", etc. In the exisiting SATA SSD drive, we are fetching these info by using smartctl tool ("smartctl -A diskname"). But the ...
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vote
1answer
33 views

SWAP write protection on SSD

When using SWAP on an SSD, does the filesystem offer any write-cycle protection? i.e. randomizing or otherwise managing writes to avoid "flash wear-out" since modern SSDs are generally rated in the ...
2
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2answers
156 views

Can't mount second hard drive on CentOS 6.6 - Duplicate VG name

Yesterday I add a SSD to my PC configuration and I make on it a fresh installation. At the moment of installation I replace my old HDD and there was only the SSD. When the installation finish I make a ...
0
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0answers
79 views

Repeated Ext4-fs error with comm psad: invalid block. Does it mean the SSD is dying?

Configuration : Debian Jessie with SSD. /dev/sda1 is root filesystem, /dev/sda6 is home filesystem. Errors occurs only on /dev/sda1. For the third time, I've got software errors because the root ...
0
votes
1answer
36 views

Problems with secondary hdd in grub

I had some problems installing Linux mint and or any other Linux distribution in combination with Windows. When I booted my machine it would hang before the grub bootloader showed up. Now i have some ...
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0answers
63 views

New SSD only mounts after issuing blkid command. [Ubuntu 14.04]

I have a new Intel SSD Pro 2500 installed on a SATA3 port as a secondary drive. It is formatted as a primary ext4 partition. My fstab line is : UUID=1e33881a-d6cf-4933-be70-0aa837641af6 /mnt/ssd ...
3
votes
1answer
699 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 ...
0
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1answer
87 views

Will SSD swap improve performance?

I am wondering if i have only 4GB ram and somehow(virtualbox,browser) isn't enough and i cannot proceed to upgrade(due to ultrabook and soldered memory) will swap held in SSD help the overall ...
7
votes
3answers
18k 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. ...
3
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2answers
778 views

SSD as a read cache for FREQUENTLY read data

I'm looking for ways to make use of an SSD to speed up my system. In “Linux equivalent to ReadyBoost?” (and the research that triggered for me) I've learned about bcache, dm-cache and EnhanceIO. All ...
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1answer
26 views

Can I Wipe My SSD from within the Drive Itself?

I have a 240 GB ssd that contains my entire system (distro and kernel). I want to wipe it and start fresh following these instructions: https://wiki.archlinux.org/index.php/SSD_memory_cell_clearing ...
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vote
1answer
88 views

dd'ing SDD, decreasing write speed

My hard drive is a SanDisk SSD. The drive is new. I've booted into ArchLinux Live System, with the intention of preparing the hard drive for full disk encryption. I've noticed a significant drop of ...
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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 ...
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128 views

Broken iSSD on motherboard freezes Ubuntu 14.04

I have an Asus UX32VD laptop which has a primary harddrive where the OS is installed and a small iSSD of 24GB on the motherboard which is not used for anything. I'm running Ubuntu 14.04 and Windows 7 ...
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0answers
313 views

Grub environment block on Centos 7 with efi?

How do I modify the default or next-boot boot entry for the next reboot on Centos 7? I need to switch back and forth between kernels frequently. The machine is in a different room, so it is most ...
41
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3answers
30k 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 ...
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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
113 views

Installing Linux by copying?

I've been trying to install a few linux distros on a machine with hybrid strorage - /dev/sda is an HDD and /dev/sdb is an SSD , with /boot, /swap and /root on the SSD and /home possibly on the SDD or ...
6
votes
1answer
647 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 ...
49
votes
3answers
5k views

What NOT to put on an SSD?

I bought an SSD and I am going to set up my desktop system with a completely fresh Linux installation. SSDs are known to be fast, but they have a disadvantage: The number of writes (per block?) is ...
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1answer
146 views

SSD dedicated to swap-only fails on Debian or Ubuntu

It did not happen to me yet, but if I dedicate a single SSD (non-RAID) to swap-ONLY and the server system is using it to full capacity - what happens next? How am I to recover, assuming I have an ...
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1answer
3k 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?
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4answers
2k 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
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0answers
75 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 ...
5
votes
2answers
1k 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 ...
0
votes
1answer
96 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, ...
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0answers
135 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 ...
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0answers
189 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 ...
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0answers
89 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 ...
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0answers
143 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 ...
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3answers
3k 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 ...
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vote
2answers
193 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 ...
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0answers
20 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
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2answers
714 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 ...
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0answers
138 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?
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2answers
7k 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 ...
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0answers
39 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 ...
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0answers
383 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 ...