auto-mounting disks that might not be present (e.g. usb drives)
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From: Camaleón on 2 Feb 2010 13:20 On Tue, 02 Feb 2010 12:31:56 -0500, Frank McCormick wrote: > On Tue, 02 Feb 2010 16:12:56 +0000 (UTC) Camaleón wrote: > >> I.e., if your USB drive is listed there and you have something like: >> >> # <file system> <mount point> <type> <options> <dump> # <pass> >> /dev/sdb1 /data/backup ext3 >> acl,user_xattr 1 2 ^ >> >> Then fsck will try to check that mount point, either is present or not >> (or at least that is my understanding after reading "man fstab") :-) > > > That's not what happens in my case. The boot process simply gives > an error that the device does not exist. There is no attempt to fsck the > non-existant drive. I gather this is because the system attempts to > mount the non-existant drive. Uh? Didn't you say...? :-? *** I found that initscripts seems to attempt to run fsck on non-existent devices that appear in /etc/fstab, and different fsck programs for different filesystem types give different error codes. *** O.k., let's start over. Any device or partition listed under fstab are "static" ones. If you have defined a mount point that is not present at boot time, you will get a warning, that is a normal behaviour. If your USB disk is not always "on" and you want to prevent that warning, you can use de "noauto" option but you'll have to manually mount it when you plug it. Another possibility is just deleting (or comment) that entry in fstab and use the standard DE hotplug system (that will mount the unit under /media as soon as you turn it on). Additional info: http://wiki.debian.org/USBDrive Greetings, -- Camaleón -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org
From: Frank McCormick on 2 Feb 2010 13:40 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Tue, 02 Feb 2010 18:10:29 +0000 (UTC) Camale�n <noelamac(a)gmail.com> wrote: > On Tue, 02 Feb 2010 12:31:56 -0500, Frank McCormick wrote: > > > On Tue, 02 Feb 2010 16:12:56 +0000 (UTC) Camale�n wrote: > > > >> I.e., if your USB drive is listed there and you have something > >> like: > >> > >> # <file system> <mount point> <type> <options> <dump> # > >> # <pass> > >> /dev/sdb1 /data/backup ext3 > >> acl,user_xattr 1 2 ^ > >> > >> Then fsck will try to check that mount point, either is present > >> or not (or at least that is my understanding after reading "man > >> fstab") :-) > > > > > > That's not what happens in my case. The boot process simply > > gives an error that the device does not exist. There is no > > attempt to fsck the non-existant drive. I gather this is because > > the system attempts to mount the non-existant drive. > > Uh? Didn't you say...? :-? > > *** > I found that initscripts seems to attempt to run fsck on > non-existent devices that appear in /etc/fstab, and different fsck > programs for different filesystem types give different error codes. > *** No. I didn't say it. On Tue, 02 Feb 2010 22:25:12 +1030, Arthur Marsh wrote: > Hi, I found that initscripts seems to attempt to run fsck on > non-existent devices that appear in /etc/fstab, and different fsck > programs for different filesystem types give different error codes. > > What is the easiest way to set up Debian to automatically mount specific > devices if they are present, but not cause a boot failure when they are > absent? > Any device or partition listed under fstab are "static" ones. If > you have defined a mount point that is not present at boot time, > you will get a warning, that is a normal behaviour. > > If your USB disk is not always "on" and you want to prevent that > warning, you can use de "noauto" option but you'll have to manually > mount it when you plug it. No, it mounts automatically when I plug it in...I just want it mounted automatically IF it's present during boot - -- Frank -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iQEcBAEBAgAGBQJLaHBAAAoJEMEDyLTvrVhjtvEH/0w7WxGgk+oPOz2psIUaPozX UKLnwtyVHXZWd97yighP2ASW2FzbWMJSWjqOFoiquOSoSs/wXtA2ohy4boSSAHSc e7S4Z7QShRg8X5yNSMRTd1us1H2tklj57zW/pof/Dd36xGd515oWTdUwCMXJTnW6 hbWKhqutEuePbd+gLNXFJWIg24DbURHYqfsOzQwYOyDGUSXiJY8PFmHJTYHLyE6q JGQ9KlKUgWbDCld0gRxs4XMjqUY+9Ey9J+LvqrcoLCYq8HVt2mG9fq1au4YX/qsl fsFZwqTSezKudfVgVrNk8QFy9l4s2FqyBfeWlvLvSPiX2XCnHwhAE11J2pp5fA4= =U65H -----END PGP SIGNATURE----- -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org
From: Camaleón on 2 Feb 2010 13:50 On Tue, 02 Feb 2010 13:34:40 -0500, Frank McCormick wrote: > On Tue, 02 Feb 2010 18:10:29 +0000 (UTC) Camaleón wrote: >> Uh? Didn't you say...? :-? >> >> *** >> I found that initscripts seems to attempt to run fsck on non-existent >> devices that appear in /etc/fstab, and different fsck programs for >> different filesystem types give different error codes. *** > > No. I didn't say it. Oops, sorry. You're right. That was the OP. >> Any device or partition listed under fstab are "static" ones. If you >> have defined a mount point that is not present at boot time, you will >> get a warning, that is a normal behaviour. >> >> If your USB disk is not always "on" and you want to prevent that >> warning, you can use de "noauto" option but you'll have to manually >> mount it when you plug it. > > No, it mounts automatically when I plug it in...I just want it > mounted automatically IF it's present during boot Then, why not just add it to "/etc/fstab"? - If it's present, it will be mounted. - If it's not available, it will be ignored and the warning logged. Nothing wrong with that. Greetings, -- Camaleón -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org
From: Frank McCormick on 2 Feb 2010 14:50 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Tue, 02 Feb 2010 18:45:25 +0000 (UTC) Camale�n <noelamac(a)gmail.com> wrote: > On Tue, 02 Feb 2010 13:34:40 -0500, Frank McCormick wrote: > > > On Tue, 02 Feb 2010 18:10:29 +0000 (UTC) Camale�n wrote: > > >> Uh? Didn't you say...? :-? > >> > >> *** > >> I found that initscripts seems to attempt to run fsck on > >> non-existent devices that appear in /etc/fstab, and different > >> fsck programs for different filesystem types give different > >> error codes. *** > > > > No. I didn't say it. > > Oops, sorry. You're right. That was the OP. No problem. Earlier you said: > > >> If your USB disk is not always "on" and you want to prevent that > >> warning, you can use de "noauto" option but you'll have to > >> manually mount it when you plug it. Then I said : >> No, it mounts automatically when I plug it in...I just want it >> mounted automatically IF it's present during boot To the OP: The bottom line: There is no problem even if flashdrives/cameras etc are in fstab but not present- you simply get the error logged Cheers - -- Frank -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iQEcBAEBAgAGBQJLaIEBAAoJEMEDyLTvrVhjhlYIAJJDTMlNpzFs48z96TuHOQfH gWD6r6MoXnN6n0hu05pT8qi55tM7txZMS+6dQbvRf/frSa73mwLOJQ/qruBBmx2P UHRLQN9b45psZ4o6BY/HVzgYq7px8ULw1dXMNMUOQ1TCTzay56LzSu26ff0OzMI0 8MaaGRdtNUMgOvi8ejIFqFVp5+UcJBa6Hu8N+h6oGUguBkBYobYxhDvBbEc6BjZW iWQf4BI99zjEl/MRm77s+kgUNs+oOaT7mIAWIGFIJcaYHt6K4hukx5F/lTP5NiVu c7Dp0DdZbDWHHKz++xd+WVozl1/ApogClUvv04Gjt5+fP/a9XRRHSvRdJZvm0FI= =Ccni -----END PGP SIGNATURE----- -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org
From: Camaleón on 2 Feb 2010 15:10
On Tue, 02 Feb 2010 14:46:09 -0500, Frank McCormick wrote: > To the OP: > > The bottom line: There is no problem even if flashdrives/cameras etc are > in fstab but not present- you simply get the error logged Question is, do you really need "those" devices (flash drives and MC/SD memory cards) to be present in "fstab"? That is, do you need static mount points for that kind of devices? USB hard drives make sense, but for media cards I'd better let hotplug subsystem auto-manages them. Greetings, -- Camaleón -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org |