broken SWAP

[aria]

Hello,
This isn't actually a just after installation issue, but very similar to one of these, thus posting it here.

Did a very stupid mistake: while intending to delete Linux partitions on an USB key (using KDE Partition Manager), I actually deleted the "linuxswap" and "extended" partitions of the main system on the hard-disk...
Recreated them with KDE Partition Manager, but couldn't make the "linuxswap" to mount by UUID, and with the "sw" mounting option (like the system on another computers shows).
Also tried the recovery mode, which showed that SWAP wasn't accessible (does not automatically mount at reboot).
As a result, rebooting is very slow, kinda 10-15min (with an SSD), than, while checking in KDE Partition Manager, the "linuxswap" is not activated. Did activate it manually, but does not memorize this option for the next reboot.
Would have tried some settings in grub2 if I could open it in a GUI (like it was with 14.04), but couldn't.
Need help, please: how could I fix this mistake?
Thanks,

[vinnywright]

lets see

cat /etc/fstab

and

blkid

VINNY

[aria]

cat /etc/fstab:

# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
# / was on /dev/sda1 during installation
UUID=2148a091-c8a6-4af4-bec9-271f95991275 /               ext4    errors=remount-ro 0       1
# swap was on /dev/sda5 during installation
UUID=b7a48347-1b16-4324-a0a7-ae71486b3676 none            swap    sw              0       0

blkid:

/dev/sda1: UUID="2148a091-c8a6-4af4-bec9-271f95991275" TYPE="ext4" PARTUUID="23328fe2-01"
/dev/sda5: UUID="3d21ed5e-c3c9-4f4f-a08a-dc0286c2ebf1" TYPE="swap" PTTYPE="dos" PARTUUID="23328fe2-05"

[aria]

Checked, and with the linuxswap inactive after booting, or manually activated in KDE Part Mngr, the results are the same.
Correction: only difference was in /etc/fstab at "# swap was on|of ...".

[Snowhog]

Blkid is reporting a UUID that is (now) different that that you are using for swap in fstab. Correct that and you should be fine.

[vinnywright]

cat /etc/fstab:

# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
# / was on /dev/sda1 during installation
UUID=2148a091-c8a6-4af4-bec9-271f95991275 /               ext4    errors=remount-ro 0       1
# swap was on /dev/sda5 during installation
UUID=[COLOR=#ff0000]b7a48347-1b16-4324-a0a7-ae71486b3676[/COLOR] none            swap    sw              0       0

blkid:

/dev/sda1: UUID="2148a091-c8a6-4af4-bec9-271f95991275" TYPE="ext4" PARTUUID="23328fe2-01"
/dev/sda5: UUID="[COLOR=#0000cd]3d21ed5e-c3c9-4f4f-a08a-dc0286c2ebf1[/COLOR]" TYPE="swap" PTTYPE="dos" PARTUUID="23328fe2-05"

replace the part in red with the part in blue.

VINNY

[aria]

Thank you all,
Everything works perfect now!

Note for myself:
Copied the swap UUID from the result posted here above for "blkid" (which is the actual UUID).
Konsole: kdesudo kate /etc/fstab
Pasted it in Kate, in "fstab", replacing the old UUID.
Saved, closed all, and reboot.

[vinnywright]

Thank you all,
Everything works perfect now!

Note for myself:
Copied the swap UUID from the result posted here above for "blkid" (which is the actual UUID).
Konsole: kdesudo kate /etc/fstab
Pasted it in Kate, in "fstab", replacing the old UUID.
Saved, closed all, and reboot.

so you good now ,,,rite?

VINNY

[aria]

Sure! System works again like a charm.
Thanks!