Messages in this thread | | | From | sebastien cabaniols <> | Subject | Need to format twice /dev/ramX with reiserfs to be able to mount it ? | Date | Sat, 17 Jun 2006 19:15:50 +0200 |
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Hello list,
I am trying to format with reiserfs a ramdrive /dev/ramX (I want to nfs export it, so tmpfs is not an option and ext2/ext3 is not an option for other reasons)
After formating is okay I can't mount it, but If I reformat it, I usually can mount it. I have also tried after first formating to dump it to a file and to loopback mount the file, this works: I am puzzled.
Here is the sample session:
opteron:/home/seb # mkreiserfs -q /dev/ram8 mkreiserfs 3.6.18 (2003 www.namesys.com)
opteron:/home/seb # mount /dev/ram8 /tmp/mountpoint/ mount: wrong fs type, bad option, bad superblock on /dev/ram8, missing codepage or other error In some cases useful info is found in syslog - try dmesg | tail or so
opteron:/home/seb # mkreiserfs -q /dev/ram8 mkreiserfs 3.6.18 (2003 www.namesys.com)
opteron:/home/seb # mount /dev/ram8 /tmp/mountpoint/
opteron:/home/seb # df -h Filesystem Size Used Avail Use% Mounted on /dev/sda5 18G 4.1G 13G 24% / tmpfs 1004M 12K 1004M 1% /dev/shm /dev/sda2 79G 9.9G 65G 14% /home /dev/sda6 18G 2.5G 15G 15% /sys2 /dev/sda7 18G 2.5G 15G 15% /sys3 /dev/sda8 18G 129M 17G 1% /sys4 athlon:/data 111G 103G 1.6G 99% /data /dev/ram8 125M 33M 93M 26% /tmp/mountpoint opteron:/home/seb #
The filesystem looks usable (I have copied data into it and used it... it looks functionnal)
I tried on several configurations:
32bit kernel 2.6.13-15.10 from SUSE 10 on a centrino laptop. 64bit kernel 2.6.13-15.10 from SUSE 10 on an opteron box. 64bit kernel 2.6.16 from kernel.org on an EMT64 box.
and when mount fails, dmesg tells me the following:
ReiserFS: ram8: warning: sh-2011: read_super_block: can't find a reiserfs filesystem on (dev ram8, block 16, size 4096)
ReiserFS: ram8: warning: sh-2021: reiserfs_fill_super: can not find reiserfs on ram8 ReiserFS: ram8: found reiserfs format "3.6" with standard journal ReiserFS: ram8: using ordered data mode ReiserFS: ram8: journal params: device ram8, size 8192, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30 ReiserFS: ram8: checking transaction log (ram8) ReiserFS: ram8: Using r5 hash to sort names ReiserFS: ram8: warning: Created .reiserfs_priv on ram8 - reserved for xattr storage.
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