Gentoo Archives: gentoo-user

From: Mick <michaelkintzios@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Re: [SOLVED] Can I resize /dev/shm on the fly?
Date: Tue, 30 May 2017 07:31:28
Message-Id: 1965284.GkUpDZ09MX@dell_xps
In Reply to: [gentoo-user] Re: [SOLVED] Can I resize /dev/shm on the fly? by Nikos Chantziaras
1 On Tuesday 30 May 2017 02:20:44 Nikos Chantziaras wrote:
2 > On 05/29/2017 10:13 PM, Walter Dnes wrote:
3 > > On Mon, May 29, 2017 at 10:05:02PM +0300, Mart Raudsepp wrote
4 > >
5 > >> Ühel kenal päeval, E, 29.05.2017 kell 14:47, kirjutas Walter Dnes:
6 > >>> I was using a chroot, and I bind-mounted the chroot's /dev and
7 > >>>
8 > >>> /proc
9 > >>> and /sys on top of the host machine's directories. Bad idea... I now
10 > >>> have a 10 megabyte /dev/shm on the host. Is it possible to resize
11 > >>> /dev/shm to approx 1 gigabyte without rebooting?
12 > >>
13 > >> mount -oremount,size=1G /dev/shm
14 > >>
15 > >> Provided it's a tmpfs like it is for me.
16 > >>
17 > > Thanks; that pointed me in the right direction. The command gave me a
18 > >
19 > > response "mount: /dev/shm not mounted or bad option". After some trial
20 > > and error, I found I had to...
21 > >
22 > > mount -o remount,size=1G /dev
23 >
24 > That does not look correct. /dev/shm should be a separate mount point,
25 > independent of /dev.
26
27 +1
28
29 Perhaps it could not be unmounted at the time Walter tried it and this is why
30 it failed. If a specific size is required then it can also be added into the
31 fstab:
32
33 none /dev/shm tmpfs defaults,size=1G 0 0
34
35 Then umount followed by mount /dev/shm should get the desired size.
36 --
37 Regards,
38 Mick

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