Date: Mon, 30 Nov 2020 21:44:58 -0700 From: Warner Losh <imp@bsdimp.com> To: Yasuhiro KIMURA <yasu@utahime.org> Cc: FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org> Subject: Re: Size of EFI system partition is much smaller when it is mounted Message-ID: <CANCZdfrXB3ccpaSdRTf9bUPZdJHfQKJd=Y9nFXmpAZJYGYBEzA@mail.gmail.com> In-Reply-To: <20201201.093330.2020884495412351031.yasu@utahime.org> References: <20201201.093330.2020884495412351031.yasu@utahime.org>
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On Mon, Nov 30, 2020 at 5:35 PM Yasuhiro KIMURA <yasu@utahime.org> wrote: > I made clean install of 11.4-RELEASE amd64 with ZFS root and UEFI boot > mode. 'Auto (ZFS)' was used at disk setup phase and disk was > partitioned as following. > > ---------------------------------------------------------------------- > root@rolling-vm-freebsd3[80]# uname -a > FreeBSD rolling-vm-freebsd3.home.utahime.org 11.4-RELEASE-p3 FreeBSD > 11.4-RELEASE-p3 #0: Tue Sep 1 08:22:33 UTC 2020 > root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64 > root@rolling-vm-freebsd3[81]# gpart show ada0 > => 40 209715120 ada0 GPT (100G) > 40 409600 1 efi (200M) > 409640 2008 - free - (1.0M) > 411648 16777216 2 freebsd-swap (8.0G) > 17188864 192524288 3 freebsd-zfs (92G) > 209713152 2008 - free - (1.0M) > ---------------------------------------------------------------------- > > According to it the size of EFI system partition is 200MB. But if I > mount it to filesystem and check its size with df(1), then it is much > smaller than 200MB. > > ---------------------------------------------------------------------- > root@rolling-vm-freebsd3[82]# mount -t msdosfs /dev/ada0p1 /mnt > root@rolling-vm-freebsd3[83]# df -k /mnt > Filesystem 1024-blocks Used Avail Capacity Mounted on > /dev/ada0p1 779 384 395 49% /mnt > ---------------------------------------------------------------------- > > And if I try to copy large file to /mnt then it fails. > > ---------------------------------------------------------------------- > root@rolling-vm-freebsd3[94]# ls -l dummy.1MB.date > -rw-r--r-- 1 root wheel 1048576 Nov 29 10:39 dummy.1MB.date > root@rolling-vm-freebsd3[95]# cp dummy.1MB.date /mnt > cp: /mnt/dummy.1MB.date: No space left on device > ---------------------------------------------------------------------- > > So it seems kernel(?) really regards the size of mounted EFI system > part as only 779KB. > > I also tried it with 12.2-RELEASE and df(1) reported correctly. > > ---------------------------------------------------------------------- > root@eastasia[1002]# uname -a > FreeBSD eastasia.home.utahime.org 12.2-RELEASE FreeBSD 12.2-RELEASE > r366954 GENERIC amd64 > root@eastasia[1003]# gpart show ada0 > => 40 1953525088 ada0 GPT (932G) > 40 409600 1 efi (200M) > 409640 2008 - free - (1.0M) > 411648 16777216 2 freebsd-swap (8.0G) > 17188864 1936334848 3 freebsd-zfs (923G) > 1953523712 1416 - free - (708K) > > root@eastasia[1004]# mount -t msdosfs /dev/ada0p1 /mnt > root@eastasia[1005]# df -k /mnt > Filesystem 1024-blocks Used Avail Capacity Mounted on > /dev/ada0p1 204696 976 203720 0% /mnt > ---------------------------------------------------------------------- > > Is there any bug fix about it that is merged to 12.x but not 11.x? > 11.x puts a pre-canned image into the ESP that's tiny, regardless of the size, while 12.x does a newfs_msdos and sizes it properly. It's kinda hard to fix in 11.x since there's a number of changes in a number of places. You can, though, on 11.x, newfs_msdos the filesystem and copy boot1.efi from FreeBSD's /boot to the ESP's \efi\boot\bootx64.efi if you need more space on the ESP for some reason. Warner
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