On 25.01.2024 22:15, Ben T. Fender wrote:
Thu, 25 Jan 2024 17:15:41 +0300 Andrei Borzenkov <arvidjaar@gmail.com> :
On Thu, Jan 25, 2024 at 5:06 PM Ben T. Fender <slowroller@trixtar.org> wrote:
Thu, 25 Jan 2024 08:53:39 +0100 "Carlos E. R." <robin.listas@telefonica.net> :
On 2024-01-25 03:53, Ben T. Fender wrote:
After "fdisk -l" to validate that my booting drive is in fact /dev/sda
mount /dev/sda8 /0/sa08
because I want to work in partition 8
What I get in response is ========================================================== # mount /dev/sda7 /0/sa07 mount: /0/sa07: /dev/sda7 already mounted or mount point busy.
dmesg(1) may have more information after failed mount system call. ==========================================================
Why is TW not letting me mount by confirmed device-name?
Why do you say it doesn't?
Because dolphin showed nothing under /0/sa07 :-)
What evidence have you shown?
The error message says /dev/sda7 is already mounted OR mountpoint is busy
Maybe the error message should say WHERE it is mounted?
Post output of
multipath -l
# multipath -l Samsung_SSD_860_EVO_1TB_S59VNJ0N419951T dm-0 ATA,Samsung SSD 860 size=932G features='0' hwhandler='0' wp=rw `-+- policy='service-time 0' prio=0 status=active `- 2:0:0:0 sda 8:0 active undef running WDC_WD20EZBX-00AYRA0_WD-WXH2A31NP1A7 dm-13 ATA,WDC WD20EZBX-00A size=1.8T features='0' hwhandler='0' wp=rw `-+- policy='service-time 0' prio=0 status=active `- 4:0:0:0 sdb 8:16 active undef running 387.392488 | Warning: multipath devices exist, but multipathd service is not running
So the error message was correct. The full disk is under device-mapper control so it is busy and you cannot directly mount its partition bypassing device-mapper.
THIS one might just be saying something
Do I need dev-mapper OR multipathd?
I do not know whether *you* need it (and it is called device-mapper, not dev-mapper), but using multipath for a device with a single path makes little sense. In any case - to mount partition 7 of sda7 you just need to use /dev/mapper/Samsung_SSD_860_EVO_1TB_S59VNJ0N419951T-part7