Re: Fun with DVD-RAM
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On Monday 20 December 2010, Rick Thomas was heard to say: Curt Howland wrote: Is there a reason anyone can think of for not reformatting in ext2 or some other fsck-able format? Have you thought about a simple log-structured filesystem? Rick Which would you suggest? As an aside, I threw away that particular disk, and simply took a new one out and used that. It's amazing that there is no udffsck in the Debian udfutils package. Curt- - -- Those who torment us for our own good will torment us without end, for they do so with the approval of their consciences. -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (GNU/Linux) iQEVAwUBTRFTZC9Y35yItIgBAQJ6Dgf/UtHrI5lhWuwpRrYxpryawhuVVT18nI3u HgkKGYSh9r35QFlpg1+1oVE6cUdL/SM2Jvhm0LC9pZKuSM0NXXohoJdB0bNAUJiP dVe06UrGXwpWOnH9pT0tmMSxZaqY8cgnbq4NiEBKl2oXf6iIwdMBNtfYLjEN9PCM DKR4PpKgfAFIpA22afoVmACCOo7dwQkUEo9EuVzAtGKei82BuRpr11spLPj0+4Ui wGe8T0LWKS73ufyUA4qMFCDYGYltv4u1KbgeQs7CsLC4Gi6/xSFGcOqTvC+nlGJM /+5Me8Jr6IlGqfWHt/+eXJdzUy7J+iRV7WY0m995f96evI0Z4LfEMg== =5ijM -END PGP SIGNATURE- -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/201012212024.52754.howl...@priss.com
Re: Fun with DVD-RAM
On Dec 21, 2010, at 5:24 PM, Curt Howland wrote: On Monday 20 December 2010, Rick Thomas was heard to say: Curt Howland wrote: Is there a reason anyone can think of for not reformatting in ext2 or some other fsck-able format? Have you thought about a simple log-structured filesystem? Rick Which would you suggest? As an aside, I threw away that particular disk, and simply took a new one out and used that. It's amazing that there is no udffsck in the Debian udfutils package. Curt- Using aptitude search lfs (I tried other variants on log structured filesystem and go nothing) turned up nilfs2-tools and nilfs2- modules and nilfs2-source. The home page seems to be http://www.nilfs.org/ . I've never used it myself, so I can't recommend pro or con. My remark was just in passing that a log-structured filesystem would seem to be perfect for your needs. You should also investigate (try google) the filesystems that are being developed for use with flash-RAM, which shares many of the distinctive characteristics of DVD-RAM. If you find anything useful, I'd be interested to hear. This is an active area of development these days (powered by the dropping cost of flash RAM and the possibility of using it for low-power and very fast system residency devices for embedded systems), so it should be a fertile ground for google searches. Rick -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/69f94694-c37b-46d6-8e2c-bb1a976c5...@pobox.com
Fun with DVD-RAM
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi. Having fun with DVD-RAM. Well, no, it's not fun. Disk errors. Lost files. It's also mind-bendingly SLOW! But slow would be something I'd put up with, if it weren't for the disk errors. Obviously, I bought bad disks. Oh well, I've only lost a few old photographs and one unimportant backup file from 2001, however DVD-RAM was touted to me as archival quality. Blah. This was an interesting error during my efforts: = # fsck /dev/sr0 fsck from util-linux-ng 2.17.2 fsck: fsck.udf: not found fsck: Error 2 while executing fsck.udf for /dev/sr0 = Is there a way to do a file system check on a UDF disk? Next, while I realize that UDF spreads the writes around and makes the disks last longer, I am using them for long-term archive rather than something like a daily backup. Is there a reason anyone can think of for not reformatting in ext2 or some other fsck-able format? (I know not to use a journaling file system, because of the myriad rewrites of the journal itself) Curt- - -- Those who torment us for our own good will torment us without end, for they do so with the approval of their consciences. -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (GNU/Linux) iQEVAwUBTQ+Voy9Y35yItIgBAQKu3Qf8CqcEzHMgp/PFZN7D+7S8nlHYWBarVCkg /L3lyIlEQnkqkiy5ucl5nnUVmFcFcZZ/Xhk84xHsJwSwzvXv9/HHE10Y5Ym+I+1A 7eCeXuSdFaP+ekkwzyvrxWNLojfWSDWTR/nsHqzO8B17c6WhbvNWN124P4VUCqz4 nr1tBmZkZPed/gteVZumYQgedsM0JEWlRXkpqaEY2MSMII3FAbnLyYiTY/9FR2i+ OZbnlL+dilIcOCyx40biDFsF0ByHiAPvllFFhEofIQ5u22+TLBTgNStCmRXAWNfU I6c7ba2WgjQiex/jrMe+1I1d2pAM0bt5fZ5flgWt8adzpozPp5qeQA== =uRFd -END PGP SIGNATURE- -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/201012201242.59210.howl...@priss.com
Re: Fun with DVD-RAM
Curt Howland wrote: Is there a way to do a file system check on a UDF disk? Next, while I realize that UDF spreads the writes around and makes the disks last longer, I am using them for long-term archive rather than something like a daily backup. Is there a reason anyone can think of for not reformatting in ext2 or some other fsck-able format? (I know not to use a journaling file system, because of the myriad rewrites of the journal itself) Curt- Have you thought about a simple log-structured filesystem? Rick -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/4d0fb635.7040...@pobox.com
Re: Fun with DVD-RAM
On Mon, 20 Dec 2010 12:42:59 -0500, Curt Howland wrote: (...) This was an interesting error during my efforts: = # fsck /dev/sr0 fsck from util-linux-ng 2.17.2 fsck: fsck.udf: not found fsck: Error 2 while executing fsck.udf for /dev/sr0 = Is there a way to do a file system check on a UDF disk? There should be. *** http://www.linuxfromscratch.org/blfs/view/6.3/multimedia/udftools.html udffsck is used to check the integrity and correct errors on UDF filesystems. *** So udftools package should contain udffsck but it seems it's not available in Debian package :-? http://packages.debian.org/squeeze/udftools Next, while I realize that UDF spreads the writes around and makes the disks last longer, I am using them for long-term archive rather than something like a daily backup. Is there a reason anyone can think of for not reformatting in ext2 or some other fsck-able format? (I know not to use a journaling file system, because of the myriad rewrites of the journal itself) In theory, you can use whatever filesystem you prefer... or so it says Wikipedia¹, but it also warns that some of them perform faster that others, without entering into the details: (...) Even though it is possible to use any file system one likes, only very few perform well on DVD-RAM. This is because some file systems frequently overwrite data on the disc and the table of contents is contained at the start of the disc. ¹http://en.wikipedia.org/wiki/DVD-RAM#Compatibility Greetings, -- Camaleón -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/pan.2010.12.20.20.50...@gmail.com
