[kwlug-disc] Using mSata drives

L.D. Paniak ldpaniak at fourpisolutions.com
Tue Jan 14 16:05:46 EST 2014


Agree completely with Kahlid on this.  I run a number a machines with no
swap at all or with zram for swap.

Also:

swapon -s

may be helpful here to see what current swap allocations are.


On 01/14/2014 03:54 PM, Khalid Baheyeldin wrote:
> First, why do you want swap to be used at all? If it is used, it means
> RAM is not enough, and you get really bad performance on spindle
> disks, less so on SSDs.
>
> Second, if you are using swap a lot, then it would shorten the
> lifespan of your SSD.
>
> Third, yes, please try parted as the message says. To do this, just type:
>
> sudo parted
>
> Then enter:
> print devices
> You will see all the drives that parted knows about.
>
>
>
> On Tue, Jan 14, 2014 at 2:53 PM, CrankyOldBugger
> <crankyoldbugger at gmail.com <mailto:crankyoldbugger at gmail.com>> wrote:
>
>     Here's a question for the pros here...
>
>     My Lenovo laptop came with a 1TB HDD, and a 16gig sSata drive.  It
>     originally shipped with Windows 8 but I eventually wiped the whole
>     1TB and installed Ubuntu 13.10 on it.  Runs great.
>
>     One thing I noticed is that the 16gig mSata is not being used.  I
>     would like to use it a my /swap partition.  As it happens, there
>     is no swap partition on the system.
>
>     jeff at Quorra-Ubuntu:~$ sudo fdisk -l
>     [sudo] password for jeff: 
>
>     WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The
>     util fdisk doesn't support GPT. Use GNU Parted.
>
>
>     Disk /dev/sda: 16.0 GB, 16013942784 <tel:16013942784> bytes
>     255 heads, 63 sectors/track, 1946 cylinders, total 31277232 sectors
>     Units = sectors of 1 * 512 = 512 bytes
>     Sector size (logical/physical): 512 bytes / 512 bytes
>     I/O size (minimum/optimal): 512 bytes / 512 bytes
>     Disk identifier: 0x8bb65f34
>
>        Device Boot      Start         End      Blocks   Id  System
>     /dev/sda1               1    31277231    15638615+  ee  GPT
>
>     WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The
>     util fdisk doesn't support GPT. Use GNU Parted.
>
>
>     Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
>     255 heads, 63 sectors/track, 121601 cylinders, total 1953525168
>     sectors
>     Units = sectors of 1 * 512 = 512 bytes
>     Sector size (logical/physical): 512 bytes / 4096 bytes
>     I/O size (minimum/optimal): 4096 bytes / 4096 bytes
>     Disk identifier: 0x8bb65f33
>
>        Device Boot      Start         End      Blocks   Id  System
>     /dev/sdb1               1  1953525167   976762583+  ee  GPT
>     Partition 1 does not start on physical sector boundary.
>
>
>
>     Here's the df:
>
>     jeff at Quorra-Ubuntu:~$ df -h
>     Filesystem                     Size  Used Avail Use% Mounted on
>     /dev/sdb2                      275G  5.2G  256G   2% /
>     none                           4.0K     0  4.0K   0% /sys/fs/cgroup
>     udev                           3.9G  4.0K  3.9G   1% /dev
>     tmpfs                          794M  1.5M  792M   1% /run
>     none                           5.0M     0  5.0M   0% /run/lock
>     none                           3.9G  472K  3.9G   1% /run/shm
>     none                           100M  108K  100M   1% /run/user
>     /dev/sdb1                       93M  3.3M   90M   4% /boot/efi
>     /dev/sdb3                      642G  101G  509G  17% /home
>     10.42.1.95:/volume1/video      8.1T  5.4T  2.7T  68%
>     /home/jeff/Videos/Athenavids
>     10.42.1.95:/volume1/music      8.1T  5.4T  2.7T  68%
>     /home/jeff/Music/Athenamusic
>     10.42.1.95:/volume1/NetBackup  8.1T  5.4T  2.7T  68%
>     /mnt/Athenabackups
>
>     As you can see, there is no swap partition.  I _thought_ I set up
>     the mSata as the swap, during the install, but apparently not.
>
>     Please note that this machine has UEFI, but SecureBoot is turned
>     off.  Damn Windows 8....
>
>     Does anyone have any ideas on how to set up the mSata as the swap
>     partition?
>
>     Thanks,
>
>     Jeff
>
>
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>
>
>
>
> -- 
> Khalid M. Baheyeldin
> 2bits.com <http://2bits.com>, Inc.
> Fast Reliable Drupal
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> Simplicity is prerequisite for reliability. --  Edsger W.Dijkstra
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> For every complex problem, there is an answer that is clear, simple,
> and wrong." -- H.L. Mencken
>
>
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