GPT vs MBR for swap devices
Trev
freebsd-arm at sentry.org
Tue Jun 19 05:10:49 UTC 2018
bob prohaska wrote on 19/06/2018 14:00:
> On Tue, Jun 19, 2018 at 12:34:23PM +1000, Trev wrote:
>>
>> Just for reference, with the 32 bit Rpi2, my peak swap usage (with
>> nothing much other than make -j4 buildworld running) is 1.424GB.
>
> That's a surprise, I thought it would be much less. What is your
> swap and storage configuration?
root at rpi2 [/root] $ cat /etc/fstab
# Custom /etc/fstab for FreeBSD embedded images
/dev/ufs/rootfs / ufs rw,noatime 1 1
/dev/msdosfs/MSDOSBOOT /boot/msdos msdosfs rw,noatime 0 0
md1 /tmp mfs rw,noatime,-s100m 0 0
md2 /var/log mfs rw,noatime,-s15m 0 0
md3 /var/tmp mfs rw,noatime,-s15m 0 0
/dev/label/swap none swap sw 0 0
/dev/ufs/home /home ufs rw,noatime 2 2
/dev/ufs/usr /usr ufs rw,noatime 2 2
root at rpi2 [/root] $ gpart show
=> 63 30318529 mmcsd0 MBR (14G)
63 102375 1 !12 [active] (50M)
102438 30216154 2 freebsd (14G)
=> 0 30216154 mmcsd0s2 BSD (14G)
0 90 - free - (45K)
90 30216064 1 freebsd-ufs (14G)
=> 40 60567472 da0 GPT (29G)
40 8 - free - (4.0K)
48 4194304 1 freebsd-swap (2.0G)
4194352 54525952 2 freebsd-ufs (26G)
58720304 1847208 - free - (902M)
=> 40 60567472 da1 GPT (29G)
40 60567468 1 freebsd-ufs (29G)
60567508 4 - free - (2.0K)
root at rpi2 [/root] $ mount
/dev/ufs/rootfs on / (ufs, local, noatime, soft-updates)
devfs on /dev (devfs, local)
/dev/msdosfs/MSDOSBOOT on /boot/msdos (msdosfs, local, noatime)
/dev/md1 on /tmp (ufs, local, noatime, soft-updates)
/dev/md2 on /var/log (ufs, local, noatime, soft-updates)
/dev/md3 on /var/tmp (ufs, local, noatime, soft-updates)
/dev/ufs/home on /home (ufs, local, noatime, soft-updates)
/dev/ufs/usr on /usr (ufs, local, noatime, soft-updates)
da0 at umass-sim0 bus 0 scbus0 target 0 lun 0
da0: < USB DISK 2.0 PMAP> Removable Direct Access SPC-4 SCSI device
da0: Serial Number 070B6B2514ABD241
da0: 40.000MB/s transfers
da0: 29574MB (60567552 512 byte sectors)
da0: quirks=0x3<NO_SYNC_CACHE,NO_6_BYTE>
da1 at umass-sim1 bus 1 scbus1 target 0 lun 0
da1: < USB DISK 2.0 PMAP> Removable Direct Access SPC-4 SCSI device
da1: Serial Number 070B6B236F828891
da1: 40.000MB/s transfers
da1: 29574MB (60567552 512 byte sectors)
da1: quirks=0x3<NO_SYNC_CACHE,NO_6_BYTE>
da0 - 32G Emtec USB memory - houses /home and 2G swap partition
da1 - 32G Emtec USB memory - houses /usr
/usr/obj is linked to /home/obj
More information about the freebsd-arm
mailing list