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javeree
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Joined: 29 Jan 2006
Posts: 453
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 Posted: Tue Oct 21, 2014 10:28 am Post subject: cannot mount ext4 root with user_xattr |
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emerging wireshark tells me I need to set specific capabilities on the binary. IN order to do this, it seems I have to mount my ext4 partition with user_xattr.
In /etc/fstab, I have
| Quote: |
#/dev/sdc2
/dev/disk/by-uuid/a3699f8d-c429-49e3-882a-8cd93858cf32 / ext4 rw,noatime,user_xattr,data=ordered,commit=0 0 1
# /dev/sdc5
/dev/disk/by-uuid/3da8d1d7-b223-41e2-866b-7904ef021e7f /mnt/Hermes/Hermes-Data0 ext4 rw,nosuid,nodev,noatime,user_xattr,commit=0 0 2
# /dev/sdc6
/dev/disk/by-uuid/c3aac44e-d065-4e9b-b2ed-a13e3e7cc043 /mnt/Hermes/Hermes-Data1 ext4 rw,noexec,nosuid,nodev,noatime,user_xattr,commit=0 0 2
# /dev/sdd1
/dev/disk/by-uuid/c1add652-874a-44d6-bc16-86ad73f18e20 /mnt/.backupdrive ext4 rw,nosuid,nodev,noatime,user_xattr,errors=continue,barrier=1,data=ordered,commit=0 0 2
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However, the following is the result after booting:
| Quote: | rootfs on / type rootfs (rw)
/dev/sdc2 on / type ext4 (rw,noatime,data=ordered)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
tmpfs on /run type tmpfs (rw,nosuid,nodev,relatime,size=200560k,mode=755)
udev on /dev type devtmpfs (rw,nosuid,relatime,size=10240k,nr_inodes=221254,mode=755)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620)
shm on /dev/shm type tmpfs (rw,nosuid,nodev,noexec,relatime)
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
cgroup_root on /sys/fs/cgroup type tmpfs (rw,nosuid,nodev,noexec,relatime,size=10240k,mode=755)
openrc on /sys/fs/cgroup/openrc type cgroup (rw,nosuid,nodev,noexec,relatime,release_agent=/lib/rc/sh/cgroup-release-agent.sh,name=openrc)
cpu on /sys/fs/cgroup/cpu type cgroup (rw,nosuid,nodev,noexec,relatime,cpu)
/dev/sdd1 on /mnt/.backupdrive type ext4 (rw,nosuid,nodev,noatime,data=ordered)
/dev/sdc5 on /mnt/Hermes/Hermes-Data0 type ext4 (rw,nosuid,nodev,noatime,user_xattr,commit=0)
/dev/sdc6 on /mnt/Hermes/Hermes-Data1 type ext4 (rw,noexec,nosuid,nodev,noatime,user_xattr,commit=0)
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As can be seen, the non-root partitions have no problem with user_xattr (so the feature is available in the kernel), whereas the root partition does. Do I need to do something special to enable user_xattr on the root drive ?
dmesg gives me the following:
| Quote: | [di okt 21 09:25:05 2014] EXT4-fs (sdc2): mounted filesystem with ordered data mode. Opts: user_xattr
[di okt 21 09:25:12 2014] EXT4-fs (sdd1): mounted filesystem with ordered data mode. Opts: (null)
[di okt 21 09:25:16 2014] EXT4-fs (sdc2): re-mounted. Opts: user_xattr,data=ordered,commit=0
[di okt 21 09:25:16 2014] EXT4-fs (sdd1): re-mounted. Opts: user_xattr,errors=continue,barrier=1,data=ordered,commit=0
[di okt 21 09:25:17 2014] EXT4-fs (sdc5): mounted filesystem with ordered data mode. Opts: user_xattr,commit=0
[di okt 21 09:25:17 2014] EXT4-fs (sdc6): mounted filesystem with ordered data mode. Opts: user_xattr,commit=0 |
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Ant P.
Watchman
Joined: 18 Apr 2009
Posts: 6920
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| Posted: Tue Oct 21, 2014 7:50 pm Post subject: |
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| Try adding rootflags=user_xattr to the kernel boot command line. |
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javeree
Guru
Joined: 29 Jan 2006
Posts: 453
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| Posted: Thu Oct 23, 2014 4:46 pm Post subject: |
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Tried it in grub.cfg --> No effect on the mount.  |
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ulenrich
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Joined: 10 Oct 2010
Posts: 1480
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| Posted: Thu Oct 23, 2014 5:26 pm Post subject: |
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Is this ext_attr related?
# tune2fs -l /dev/sda3 |grep ext_attr
Filesystem features: has_journal ext_attr resize_inode dir_index filet.... |
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javeree
Guru
Joined: 29 Jan 2006
Posts: 453
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| Posted: Fri Oct 24, 2014 11:57 am Post subject: |
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## SDC2 is the root device
tune2fs -l /dev/sdc2 |grep attr
Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery extent flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize
Default mount options: user_xattr acl
## SDC5 is a data partition, and I can mounting with user_xattr succeeds
# tune2fs -l /dev/sdc5 |grep attr
Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery extent flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize
Default mount options: user_xattr acl
=> As you see, I already tried setting the default mount option as defined in the superblock to use user_xattr, also without success on the root device |
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