Bitmix.in
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October 11, 2015, 07:41:14 AM |
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What is working now? After rebooting, did you run this again? umount /dev/sdb1 echo "/dev/sdb1 /cdrom vfat rw,noatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro,uid=999,gid=999 0 0" >> /etc/fstab mount /dev/sdb1 Post result of running as root: mount id <myuser> ls -al /cdrom
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October 11, 2015, 08:11:28 AM |
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What is working now? After rebooting, did you run this again? umount /dev/sdb1 echo "/dev/sdb1 /cdrom vfat rw,noatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro,uid=999,gid=999 0 0" >> /etc/fstab mount /dev/sdb1 Post result of running as root: mount id <myuser> ls -al /cdrom This is what I get: root@ubuntu:/home/ubuntu# mount sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime) proc on /proc type proc (rw,nosuid,nodev,noexec,relatime) udev on /dev type devtmpfs (rw,relatime,size=2010832k,nr_inodes=502708,mode=755) devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000) tmpfs on /run type tmpfs (rw,nosuid,noexec,relatime,size=404620k,mode=755) /dev/loop0 on /rofs type squashfs (ro,noatime) /cow on / type overlay (rw,relatime,lowerdir=//filesystem.squashfs,upperdir=/cow/upper,workdir=/cow/work) securityfs on /sys/kernel/security type securityfs (rw,nosuid,nodev,noexec,relatime) tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev) tmpfs on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k) tmpfs on /sys/fs/cgroup type tmpfs (rw,mode=755) cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd) pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime) cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory) cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer) cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices) cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event,release_agent=/run/cgmanager/agents/cgm-release-agent.perf_event) cgroup on /sys/fs/cgroup/hugetlb type cgroup (rw,nosuid,nodev,noexec,relatime,hugetlb,release_agent=/run/cgmanager/agents/cgm-release-agent.hugetlb) cgroup on /sys/fs/cgroup/net_cls,net_prio type cgroup (rw,nosuid,nodev,noexec,relatime,net_cls,net_prio) cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset,clone_children) cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio) cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpu,cpuacct) systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=29,pgrp=1,timeout=300,minproto=5,maxproto=5,direct) debugfs on /sys/kernel/debug type debugfs (rw,relatime) mqueue on /dev/mqueue type mqueue (rw,relatime) hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime) fusectl on /sys/fs/fuse/connections type fusectl (rw,relatime) tmpfs on /tmp type tmpfs (rw,nosuid,nodev,relatime) cgmfs on /run/cgmanager/fs type tmpfs (rw,relatime,size=100k,mode=755) tmpfs on /run/user/999 type tmpfs (rw,nosuid,nodev,relatime,size=404620k,mode=700,uid=999,gid=999) gvfsd-fuse on /run/user/999/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,relatime,user_id=999,group_id=999) /dev/sdb2 on /media/ubuntu/casper_rw type ext2 (rw,nosuid,nodev,relatime,uhelper=udisks2) /dev/loop1 on /media/ubuntu/casper-rw type ext2 (rw,nosuid,nodev,relatime,uhelper=udisks2) /dev/sda1 on /media/ubuntu/Riservato per il sistema type fuseblk (rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096,uhelper=udisks2) /dev/sda2 on /media/ubuntu/AA1EAC811EAC47E1 type fuseblk (rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096,uhelper=udisks2) /dev/sdb1 on /cdrom type vfat (rw,noatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro) root@ubuntu:/home/ubuntu# id <myuser> bash: syntax error near unexpected token `newline' root@ubuntu:/home/ubuntu# ls -al /cdrom total 4185956 drwxr-xr-x 14 root root 16384 Jan 1 1970 . drwxr-xr-x 1 root root 4096 Oct 5 14:06 .. -rwxr-xr-x 1 root root 134 Apr 22 16:28 autorun.inf drwxr-xr-x 3 root root 16384 Apr 22 16:30 boot drwxr-xr-x 2 root root 16384 Apr 22 16:30 casper -rwxr-xr-x 1 root root 4283432960 Oct 11 10:10 casper-rw drwxr-xr-x 2 root root 16384 Apr 22 16:29 .disk drwxr-xr-x 3 root root 16384 Apr 22 16:29 dists drwxr-xr-x 3 root root 16384 Apr 22 16:30 EFI drwxr-xr-x 2 root root 16384 Apr 22 16:30 install drwxr-xr-x 2 root root 16384 Apr 22 16:30 isolinux -rwxr-xr-x 1 root root 18092 Apr 4 2012 license.txt -rwxr-xr-x 1 root root 21517 Apr 22 16:30 md5sum.txt drwxr-xr-x 2 root root 16384 Apr 22 16:29 pics drwxr-xr-x 4 root root 16384 Apr 22 16:29 pool drwxr-xr-x 2 root root 16384 Apr 22 16:29 preseed -rwxr-xr-x 1 root root 226 Apr 22 16:29 README.diskdefines drwxr-xr-x 2 root root 16384 Oct 5 13:52 System Volume Information -rwxr-xr-x 1 root root 49070 Jan 15 2015 Uni-USB-Installer-Copying.txt -rwxr-xr-x 1 root root 19261 Jun 26 20:58 Uni-USB-Installer-Readme.txt drwxr-xr-x 2 root root 16384 Oct 5 13:52 uui -rwxr-xr-x 1 root root 2573712 Oct 17 2014 wubi.exe root@ubuntu:/home/ubuntu#
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HardcoreSuperstar (OP)
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October 11, 2015, 08:39:27 AM |
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If I go in /cdrom >>> Properties this is what I get: ![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.imgur.com%2Ft3uRWwG.jpg%3F1&t=665&c=9cDoHvpvr1IgCw) I search on google how to change permissions and ownership of a mount point, but the usual answer, to use chown command as a root doesn't work ![Angry](https://bitcointalk.org/Smileys/default/angry.gif)
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Bitmix.in
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October 11, 2015, 10:35:32 AM Last edit: October 11, 2015, 10:54:42 AM by Bitmix.in |
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The /cdrom mount point is still mount as root. After the ls -al /cdrom command you can see root being owner of the mountpoint. And after mount, the mount table will show /dev/sdb1 mounted without the specific uid and gid options. /dev/sdb1 on /cdrom type vfat (rw,noatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro) This should be: /dev/sdb1 on /cdrom type vfat (rw,noatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro,uid=999,gid=999) Run as root: mount -o remount,rw,uid=999,gid=999 /dev/sdb1 /cdrom Post the result of command (run as a regular user): idWhen I wrote <myuser>, I meant replacing <myuser> with your username, without <>. I could even help you in a more direct and interactive manner, if you wish, through some remote support application like Teamviewer. PM me in order to start a remote support session.
I search on google how to change permissions and ownership of a mount point, but the usual answer, to use chown command as a root doesn't work ![Angry](https://bitcointalk.org/Smileys/default/angry.gif) If I'm correct, FAT32 mount points does not support changing permissions to specific files/directories, but instead, rwx (read,write,execute) permissions, and user/group owner needs to be set up at the moment of mounting the file system, through the mount options: (owners) uid, gid; (permissions) umask, fmask and dmask. On the other hand, an EXT4 file system will allow you chowing/chmoding specific files/directories or the whole mount point directly. In EXT4, there is not an option to set up uid and gid options, as this is more specific to other file systems, such as FAT32 and NTFS if I'm not confused.
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achow101
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October 11, 2015, 02:47:48 PM |
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Are you sure it isn't just that the /cdrom mount point is only for root? How about changing the mount point to somewhere you know that you have access? Try making a folder in your home directory and mount the partition there.
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October 11, 2015, 08:12:05 PM |
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Post the result of command (run as a regular user): id
This is what I get: uid=999(ubuntu) gid=999(ubuntu) groups=999(ubuntu),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),115(lpadmin),131(sambashare)
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Bitmix.in
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October 11, 2015, 09:33:34 PM |
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Did you try: mount -o remount,rw,uid=999,gid=999 /dev/sdb1 /cdrom If that command is successful, post ls -al command result and try to create a file in /cdrom as a regular user: echo testing > /cdrom/permissions-test.txt
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October 13, 2015, 07:54:53 AM |
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Did you try: mount -o remount,rw,uid=999,gid=999 /dev/sdb1 /cdrom If that command is successful, post ls -al command result and try to create a file in /cdrom as a regular user: echo testing > /cdrom/permissions-test.txt Could also do chmod and chown on the relevant files in /cdrom once it's mounted rw, it looks like there's a potential permissions issue here too unless his user is in a group that allows media access. Also, this isn't important, but it's a little ugly to be mounting /cdrom as rw, doesn't that substring 'rom' stand out a little too loudly? I tend to mount these things in /media/usb or just /mnt, myself. ![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif)
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Bitmix.in
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October 13, 2015, 03:27:35 PM |
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Could also do chmod and chown on the relevant files in /cdrom once it's mounted rw, it looks like there's a potential permissions issue here too unless his user is in a group that allows media access. Also, this isn't important, but it's a little ugly to be mounting /cdrom as rw, doesn't that substring 'rom' stand out a little too loudly? I tend to mount these things in /media/usb or just /mnt, myself. ![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif) I agree. /cdrom is not a good mount point. About chmod/chown, I think that it's not possible to edit permissions because it's a FAT32 filesystem which does not allow specific file/directory permissions, but it will need to be mount with a specific UID and GID as owner for the filesystem. An EXT4 filesystem will allow this. This step has been already tried previously. I'm waiting for the author of the thread to tell the result, but I did not have an answer since Friday.
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October 13, 2015, 07:30:42 PM |
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Could also do chmod and chown on the relevant files in /cdrom once it's mounted rw, it looks like there's a potential permissions issue here too unless his user is in a group that allows media access. Also, this isn't important, but it's a little ugly to be mounting /cdrom as rw, doesn't that substring 'rom' stand out a little too loudly? I tend to mount these things in /media/usb or just /mnt, myself. ![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif) I agree. /cdrom is not a good mount point. About chmod/chown, I think that it's not possible to edit permissions because it's a FAT32 filesystem which does not allow specific file/directory permissions, but it will need to be mount with a specific UID and GID as owner for the filesystem. An EXT4 filesystem will allow this. This step has been already tried previously. I'm waiting for the author of the thread to tell the result, but I did not have an answer since Friday. Right, good point about the filesystem. Also FAT32 isn't going to allow for files larger than 4GB. That shouldn't be a problem for blockchain files, but it's worth keeping in mind.
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October 14, 2015, 07:47:28 AM |
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Did you try: mount -o remount,rw,uid=999,gid=999 /dev/sdb1 /cdrom If that command is successful, post ls -al command result and try to create a file in /cdrom as a regular user: echo testing > /cdrom/permissions-test.txt No, this command is unsuccessful. I have to add I recently switched from Ubuntu to Linux Mint 17.2. Anyway I still haven't solved this issue.
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October 14, 2015, 04:51:17 PM |
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Did you try: mount -o remount,rw,uid=999,gid=999 /dev/sdb1 /cdrom If that command is successful, post ls -al command result and try to create a file in /cdrom as a regular user: echo testing > /cdrom/permissions-test.txt No, this command is unsuccessful. I have to add I recently switched from Ubuntu to Linux Mint 17.2. Anyway I still haven't solved this issue. I haven't used Linux Mint, but I understand that it's still downstream of debian. In any case, certainly things like mounting drives and reading/writing from them is going to be the same. On topic, you said the command was unsuccessful, can you cut-n-paste the exact response from the shell?
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HardcoreSuperstar (OP)
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October 14, 2015, 05:28:04 PM |
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Did you try: mount -o remount,rw,uid=999,gid=999 /dev/sdb1 /cdrom If that command is successful, post ls -al command result and try to create a file in /cdrom as a regular user: echo testing > /cdrom/permissions-test.txt No, this command is unsuccessful. I have to add I recently switched from Ubuntu to Linux Mint 17.2. Anyway I still haven't solved this issue. I haven't used Linux Mint, but I understand that it's still downstream of debian. In any case, certainly things like mounting drives and reading/writing from them is going to be the same. On topic, you said the command was unsuccessful, can you cut-n-paste the exact response from the shell? I get nothing at all. mint@mint ~ $ sudo su mint mint # mount -o remount,rw,uid=999,gid=999 /dev/sdb1 /cdrom mint mint #
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tspacepilot
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October 14, 2015, 05:43:45 PM |
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Did you try: mount -o remount,rw,uid=999,gid=999 /dev/sdb1 /cdrom If that command is successful, post ls -al command result and try to create a file in /cdrom as a regular user: echo testing > /cdrom/permissions-test.txt No, this command is unsuccessful. I have to add I recently switched from Ubuntu to Linux Mint 17.2. Anyway I still haven't solved this issue. I haven't used Linux Mint, but I understand that it's still downstream of debian. In any case, certainly things like mounting drives and reading/writing from them is going to be the same. On topic, you said the command was unsuccessful, can you cut-n-paste the exact response from the shell? I get nothing at all. mint@mint ~ $ sudo su mint mint # mount -o remount,rw,uid=999,gid=999 /dev/sdb1 /cdrom mint mint #
That actually means success ![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif) You should be about to rerun "mount" without any arguments to see that /dev/sdb1 is mounted on /cdrom rw. Cheers! EDIT: for your own education, in general UNIX command return 0 upon success. The return code from the last command is stored in your shell as $?. If you say "echo $?" you can see the return code of the previous command.
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HardcoreSuperstar (OP)
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October 14, 2015, 07:55:04 PM |
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Did you try: mount -o remount,rw,uid=999,gid=999 /dev/sdb1 /cdrom If that command is successful, post ls -al command result and try to create a file in /cdrom as a regular user: echo testing > /cdrom/permissions-test.txt No, this command is unsuccessful. I have to add I recently switched from Ubuntu to Linux Mint 17.2. Anyway I still haven't solved this issue. I haven't used Linux Mint, but I understand that it's still downstream of debian. In any case, certainly things like mounting drives and reading/writing from them is going to be the same. On topic, you said the command was unsuccessful, can you cut-n-paste the exact response from the shell? I get nothing at all. mint@mint ~ $ sudo su mint mint # mount -o remount,rw,uid=999,gid=999 /dev/sdb1 /cdrom mint mint #
That actually means success ![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif) You should be about to rerun "mount" without any arguments to see that /dev/sdb1 is mounted on /cdrom rw. Cheers! EDIT: for your own education, in general UNIX command return 0 upon success. The return code from the last command is stored in your shell as $?. If you say "echo $?" you can see the return code of the previous command. Yes, /dev/sdb1 is mounted on /cdrom. Now how can we proceed in order to change ownership?
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tspacepilot
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October 14, 2015, 11:17:44 PM |
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Yes, /dev/sdb1 is mounted on /cdrom. Now how can we proceed in order to change ownership?
Above, Bitmix.in says that FAT32 doesn't support per file/directory group and ownership. The idea of that mount command was to mount with uid 999 as owner and group. I assumed this was because the account you want to use is uid 999. Have you tried writing a file to it?
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October 15, 2015, 08:15:21 AM |
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I get this: touch: cannot touch ‘/cdrom/t’: Permission denied
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Bitmix.in
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October 15, 2015, 08:31:11 AM Last edit: October 15, 2015, 09:00:16 AM by Bitmix.in |
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I get this: touch: cannot touch ‘/cdrom/t’: Permission denied
You have changed to Linux Mint. As root: id mint # Result: (for example) uid=1000(mint) gid=1000(mint) .... Get the uid=? and gid=? values from the previous command and replace it in the next command. As root, post the results here: mount mount -o remount,rw,uid=1000,gid=1000 /dev/sdb1 /cdrom mount su mint touch /cdrom/permissions.txt I guess you have rebooted the machine and the external hard disk was not remount correctly before running touch, or maybe, your UID is not 999 now, getting forbidden permissions error. The more things you post details about, the better for me and other users to solve your problem.
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HardcoreSuperstar (OP)
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October 15, 2015, 09:15:19 AM |
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I get this: touch: cannot touch ‘/cdrom/t’: Permission denied
You have changed to Linux Mint. As root: id mint # Result: (for example) uid=1000(mint) gid=1000(mint) .... Get the uid=? and gid=? values from the previous command and replace it in the next command. As root, post the results here: mount mount -o remount,rw,uid=1000,gid=1000 /dev/sdb1 /cdrom mount su mint touch /cdrom/permissions.txt I guess you have rebooted the machine and the external hard disk was not remount correctly before running touch, or maybe, your UID is not 999 now, getting forbidden permissions error. The more things you post details about, the better for me and other users to solve your problem. Uid and gid values are the same as before: 999. Anyway I think I'm gonna switch back to windows. Linux is just too complicated for me! Yet I would like to thank you very much, bitmix.in. You have been very kind trying to help me. If you write down your address I will send you a tip, anyway ![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif)
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