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FS#1781 - "/sbin/block detect" reports improper uuid for raid partitions #6153

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openwrt-bot opened this issue Aug 15, 2018 · 1 comment
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@openwrt-bot openwrt-bot commented Aug 15, 2018

rdslw:

This bug is device independent (I think).

As a result of this bug, /etc/config/fstab may contain damaged content, and also block mount may fail.

'block detect' reports bad uuid for /dev/sda1 (and others) mixing inside uuid of raid volume with outside of the partitions.
Bug is 'block detect' showing the same uuid for /dev/sda1 and /dev/md1 while they are different, as you can observe in /sbin/blkid output at the middle of output below.

Important: /sbin/blkid from busybox may have same/similar bug as its reporting even different uuid. The standalone /usr/sbin/blkid works properly (shown in the middle of below) and should be basis for comparison.

root@bee:/tmp# block detect config 'global' option anon_swap '0' option anon_mount '0' option auto_swap '1' option auto_mount '1' option delay_root '5' option check_fs '0'

config 'mount'
option target '/mnt/sda1'
option uuid '48f38899-5efb-4477-adca-bf11d81df99f'
option enabled '0'

config 'mount'
option target '/mnt/sdb1'
option uuid '48f38899-5efb-4477-adca-bf11d81df99f'
option enabled '0'

config 'mount'
option target '/mnt/md1'
option uuid '48f38899-5efb-4477-adca-bf11d81df99f'
option enabled '0'

root@bee:/tmp# which blkid
/usr/sbin/blkid
root@bee:/tmp# blkid
/dev/mtdblock5: TYPE="squashfs"
/dev/sda1: UUID="8b2d137c-4973-133d-6de4-7e91c4a4cdb0" TYPE="linux_raid_member" PARTUUID="f6eb912c-6ef7-4b8b-90d7-3ccc4e05d0c3"
/dev/sdb1: UUID="8b2d137c-4973-133d-6de4-7e91c4a4cdb0" TYPE="linux_raid_member" PARTUUID="731a8023-5734-463e-8866-46ea97a3f928"
/dev/md1: LABEL="OVERLAYROOT" UUID="48f38899-5efb-4477-adca-bf11d81df99f" TYPE="ext4"

root@bee:/tmp# /sbin/blkid
/dev/md1: LABEL="OVERLAYROOT" UUID="48f38899-5efb-4477-adca-bf11d81df99f" TYPE="ext4"
/dev/sda1: UUID="7c132d8b-3d13-7349-917e-e46db0cda4c4" TYPE="linux_raid_member"
/dev/sdb1: UUID="7c132d8b-3d13-7349-917e-e46db0cda4c4" TYPE="linux_raid_member"

@openwrt-bot
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@openwrt-bot openwrt-bot commented Oct 25, 2019

yousong:

fstools has no support for detection of raid members. I am wondering which type will be output from "block info /dev/sda1".

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