[mythtv-users] Semi-OT - NFS mounting issues.
Steven Adeff
adeffs.mythtv at gmail.com
Wed Dec 3 17:57:45 UTC 2008
On Tue, Dec 2, 2008 at 10:11 PM, Jonny B <jon.the.wise.gdrive at gmail.com> wrote:
> I am pasting the email I sent to some coworkers, so there's some extra
> info about the myth setup that most of you won't need, so feel free to
> skim past that. Heck, you probably don't need to read the long version
> at all, just jump to the configuration files.
>
> Short version:
> I can't seem to get my NFS mounts to mount as read/write on the
> client system. The conf files appear correct, but all mounts are
> mounting read only on the client.
>
> The long version follows:
> I have a small network at home that runs my PVR, and a few misc other
> tasks. Mainly it's a media center hub with a client/server
> relationship. The server(host) sits in my extra bedroom/office, and
> records TV, and stores video, audio, pictures, etc. The client system
> is in the living room and connects to the server, which has a database
> of recordings, schedules, etc, and NAS storage. The system works quite
> well. My issue is twofold, but seems to be related to permission in
> both cases. The host is only a 2.4ghz Pentium4 single core chip, and
> all the recordings come in as high bitrate MPEG2 recordings (8 gigs
> for an hour) that I would like to transcode to a lower bitrate (1 to 2
> gig per hour recordings) for archival and storage. The transcoding
> would be the most CPU intensive thing, as recording is done via 2
> functions - the low definition recordings come off the standard cable
> line into a hauppage PVR150 with an MPEG2 hardware encoding chip.
> These are encoded at my desired bitrate, and allows me to keep them at
> my 1 gig per hour specification. (they're also much lower bitrate to
> begin with, being analog). The High Definition recordings are already
> encoded from the broadcaster, and just captured over the air and to
> directly to disk. These are the recordings that are my issue. It takes
> about 2 hours to transcode a 1 hour recording on the host. It likely
> wouldn't be much faster on the client, but at least I could spread the
> job out evenly. The client system can also do this transcoding, but
> must have physical access to the data (playback is streamed from the
> server if the filesystems aren't locally mounted). My client system is
> a 2.8ghz Hyperthreaded P4 - not a lot more horsepower than the server,
> but multithreaded, so it can do two tasks at once. Unfortunately, I
> can't get write access to the recording directories... or any others
> for that matter. The second issue has to do with recording on the
> client system. I have a tuner card in it, and would be able to add a
> 4th tuner (3 in the host) but am unable to record to the recording
> directories, because they are read only. The workaround for this has
> been to put a ton of storage space on the host (I *WAS* recording
> everything to a 200gb drive until the Olympics came. At that point I
> lost most of my recordings attempting to make space for the Olympics,
> which took about 80 gigs a night (I only kept a days worth, deleting
> the events I wasn't interested in) and found a sale at newegg. I added
> 4 Western Digital Green Power 640gig SATA drives at $69 a piece. I was
> initially going to make a software RAID5 array, but decided for
> multiple reasons that was unneeded. MythTV (my PVR software)
> automatically spreads the recordings across as many filesystems as you
> configure, based on whether it's local or remote (local first) and
> then on space (use drive with the most free space first). I was hoping
> that the decreased complexity of standard mountpoints and NFS would
> make things simple. I had at one point (many years ago the host and
> client were both fedora 4 systems) a single tuner on the host and a
> single tuner on the client and the recordings mounted rw on both
> (physically in the host, NFS on the client) and everything worked, but
> my configuration files aren't too terribly different then they were
> back then, though my drives have grown (that first iteration only had
> an 80gb recording drive, but files were also low definition, and I
> used a lot of compression).
>
> The recordings are set to record to:
> theboss:/mnt/wd640a/recordings/
> theboss:/mnt/wd640b/recordings/
> theboss:/mnt/wd640c/recordings/
> theboss:/mnt/wd640d/recordings/
>
> Recordings is a Subdirectory on each drive, and not the root of each
> filesystem. Currently none of these are mounted on the client (as you
> can see, commented out) but the other filesystems are mounted and
> exported the exact same way that these were, and none of them ever
> allowed me write access. For example, on the client:
>
> mythtv at livingroom:/mnt/myth> touch test
> touch: cannot touch `test': Read-only file system
>
> All pertinent config files should be included below. If you need more
> information, please let me know what you need, and I will get it to
> you. Thanks!
>
> I should also add, I have several of these drives shared with Samba
> also. With smb, I have got write access working, but only use the smb
> protocal for windows and mac clients. I would much prefer NFS for
> this. Also, all user accounts are local, the root password is the same
> on both systems, but there isn't a matching regular user account - I
> didn't think this was the issue, as it has never been before, the
> client is set to boot and login to the mythtv user automatically. This
> and root are the only users on the client. The host has accounts for
> me, my girlfriend and my buddy that uploads all the new movies. (those
> would be jon, susan and munkey, respectively, but none of these
> accounts exist on the client).
>
> Host System:
> ###################################################################################
> OpenSuse 10.3
> jon at theboss:/mnt> uname -a
> Linux theboss 2.6.24.3-default #1 Wed Mar 19 08:47:29 PDT 2008 i686
> i686 i386 GNU/Linux
>
> jon at theboss:/mnt> cat /etc/fstab
> /dev/disk/by-id/scsi-SATA_IC35L060AVV207-_VNVB20G2GMVG5R-part3 /
> ext3 acl,user_xattr 1 1
> /dev/disk/by-id/scsi-SATA_IC35L060AVV207-_VNVB20G2GMVG5R-part1 /boot
> ext3 acl,user_xattr 1 2
> /dev/disk/by-id/scsi-SATA_WDC_WD2000JB-00WD-WMACK1078312-part1
> /mnt/myth xfs defaults 1 2
> /dev/disk/by-id/scsi-SATA_MAXTOR_6L080J4_664220852476-part1 /mnt/myth2
> ext3 defaults 1 2
> /dev/disk/by-id/scsi-SATA_IC35L060AVV207-_VNVB20G2GMVG5R-part2 swap
> swap defaults 0 0
> /dev/disk/by-id/ata-WDC_WD6400AACS-00G8B0_WD-WCAUF1148203-part1
> /mnt/wd640a xfs defaults 0 0
> /dev/disk/by-id/ata-WDC_WD6400AACS-00G8B0_WD-WCAUF1131149-part1
> /mnt/wd640b xfs defaults 0 0
> /dev/disk/by-id/ata-WDC_WD6400AACS-00G8B0_WD-WCAUF1131224-part1
> /mnt/wd640c xfs defaults 0 0
> /dev/disk/by-id/ata-WDC_WD6400AACS-00G8B0_WD-WCAUF1132085-part1
> /mnt/wd640d xfs defaults 0 0
> /dev/disk/by-id/ata-WDC_WD1000BB-32CCB0_WD-WMA9P1259163-part1
> /mnt/hundie xfs defaults 0 0
> /dev/disk/by-id/ata-Maxtor_6L160P0_L3B5ELTG-part1
> /mnt/onesixty xfs defaults 0 0
> proc /proc proc defaults 0 0
> sysfs /sys sysfs noauto 0 0
> debugfs /sys/kernel/debug debugfs noauto 0 0
> usbfs /proc/bus/usb usbfs noauto 0 0
> devpts /dev/pts devpts mode=0620,gid=5 0 0
>
> jon at theboss:~> cat /etc/exports
> /mnt/myth (rw,no_root_squash,sync,no_subtree_check)
> /mnt/myth2 (rw,no_root_squash,sync,no_subtree_check)
> /mnt/onesixty (rw,no_root_squash,sync,no_subtree_check)
> /mnt/hundie (rw,no_root_squash,sync,no_subtree_check)
> /mnt/wd640a (rw,no_root_squash,sync,no_subtree_check)
> /mnt/wd640b (rw,no_root_squash,sync,no_subtree_check)
> /mnt/wd640c (rw,no_root_squash,sync,no_subtree_check)
> /mnt/wd640d (rw,no_root_squash,sync,no_subtree_check)
>
> jon at theboss:/etc/samba> cat smb.conf
> # smb.conf is the main Samba configuration file. You find a full commented
> # version at /usr/share/doc/packages/samba/examples/smb.conf.SUSE if the
> # samba-doc package is installed.
> # Date: 2007-12-04
> [global]
> workgroup = WORKGROUP
> netbios name = theboss
> printcap name = cups
> add machine script = /usr/sbin/useradd -c Machine -d
> /var/lib/nobody -s /bin/false %m$
> domain logons = No
> domain master = No
> security = user
> passdb backend = smbpasswd
>
> [profiles]
> comment = Network Profiles Service
> path = %H
> read only = No
> store dos attributes = Yes
> create mask = 0600
> directory mask = 0700
>
> [printers]
> comment = All Printers
> path = /var/tmp
> printable = Yes
> create mask = 0600
> browseable = No
>
> [print$]
> comment = Printer Drivers
> path = /var/lib/samba/drivers
> write list = @ntadmin root
> force group = ntadmin
> create mask = 0664
> directory mask = 0775
>
> ## Share disabled by YaST
> # [netlogon]
>
> [myth2]
> inherit acls = Yes
> path = /mnt/myth2
> read only = Yes
> guest ok = Yes
> [myth]
> inherit acls = Yes
> path = /mnt/myth
> read only = No
> guest ok = Yes
> [onesixty]
> inherit acls = Yes
> path = /mnt/onesixty
> read only = No
> guest ok = Yes
> [hundie]
> inherit acls = Yes
> path = /mnt/hundie
> read only = No
> guest ok = Yes
>
> jon at theboss:/mnt> df -m
> Filesystem 1M-blocks Used Available Use% Mounted on
> /dev/sda3 35540 7441 26295 23% /
> udev 506 1 506 1% /dev
> /dev/sda1 1012 53 908 6% /boot
> /dev/sdb1 190687 174406 16282 92% /mnt/myth
> /dev/sdc1 75142 62230 9096 88% /mnt/myth2
> /dev/sde1 610350 157440 452911 26% /mnt/wd640a
> /dev/sdd1 610350 156078 454273 26% /mnt/wd640b
> /dev/sdf1 610350 156183 454168 26% /mnt/wd640c
> /dev/sdg1 610350 158785 451566 27% /mnt/wd640d
> /dev/hdd1 95350 75337 20013 80% /mnt/hundie
> /dev/hdc1 156252 124332 31920 80% /mnt/onesixty
>
> jon at theboss:/mnt> ls -l
> total 20
> drwxrwxrwx 10 root root 4096 2008-11-27 04:36 hundie
> drwxrwxrwx 4 root root 92 2008-11-14 07:16 myth
> drwxrwxrwx 5 root root 16384 2008-11-27 03:34 myth2
> drwxrwxrwx 10 root root 150 2008-11-27 04:37 onesixty
> drwxrwxrwx 4 root root 35 2008-11-08 02:47 wd640a
> drwxrwxrwx 4 root root 35 2008-11-08 02:47 wd640b
> drwxrwxrwx 4 root root 35 2008-11-08 02:47 wd640c
> drwxrwxrwx 4 root root 35 2008-11-08 02:47 wd640d
>
>
> Client System:
> ###################################################################################
> OpenSuse 11.0
> mythtv at livingroom:/mnt> uname -a
> Linux livingroom 2.6.25.18-0.2-pae #1 SMP 2008-10-21 16:30:26 +0200
> i686 i686 i386 GNU/Linux
>
> mythtv at livingroom:/etc> cat fstab
> /dev/disk/by-id/scsi-SATA_WDC_WD800BB-00DWD-WCAHL6377371-part1 swap
> swap defaults 0 0
> /dev/disk/by-id/scsi-SATA_WDC_WD800BB-00DWD-WCAHL6377371-part2 /
> ext3 acl,user_xattr 1 1
> proc /proc proc defaults 0 0
> sysfs /sys sysfs noauto 0 0
> debugfs /sys/kernel/debug debugfs noauto 0 0
> usbfs /proc/bus/usb usbfs noauto 0 0
> devpts /dev/pts devpts mode=0620,gid=5 0 0
> 192.168.15.26:/mnt/myth /mnt/myth nfs
> rw,tcp,timeo=150 0 0
> 192.168.15.26:/mnt/myth2 /mnt/myth2 nfs
> rw,tcp,timeo=150 0 0
> 192.168.15.26:/mnt/hundie /mnt/hundie nfs
> rw,tcp,timeo=150 0 0
> 192.168.15.26:/mnt/onesixty /mnt/onesixty nfs
> rw,tcp,timeo=150 0 0
> #192.168.15.26:/mnt/wd640a /mnt/wd640a nfs
> rw,tcp,timeo=150 0 0
> #192.168.15.26:/mnt/wd640b /mnt/wd640b nfs
> rw,tcp,timeo=150 0 0
> #192.168.15.26:/mnt/wd640c /mnt/wd640c nfs
> rw,tcp,timeo=150 0 0
> #192.168.15.26:/mnt/wd640d /mnt/wd640d nfs
> rw,tcp,timeo=150 0 0
>
> mythtv at livingroom:/mnt> ls -l
> total 36
> drwxrwxrwx 10 root root 4096 2008-11-27 04:36 hundie
> drwxrwxrwx 4 root root 92 2008-11-14 07:16 myth
> drwxrwxrwx 5 root root 16384 2008-11-27 03:34 myth2
> drwxrwxrwx 10 root root 150 2008-11-27 04:37 onesixty
> drwxr-xr-x 2 root root 4096 2008-11-08 02:32 wd640a
> drwxr-xr-x 2 root root 4096 2008-11-08 02:32 wd640b
> drwxr-xr-x 2 root root 4096 2008-11-08 02:32 wd640c
> drwxr-xr-x 2 root root 4096 2008-11-08 02:32 wd640d
>
>
> Thanks Guys.
>
> ~Jon
have you checked the NFS logs?
--
Steve
http://www.jobs-khakis-chicks.com/MythTV/
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