Hi, I have formated a previous ntfs partition to btrfs using gparted last week. It's an external usb drive.
I used it to backup another disk, then moving the datas back to the other disk. I ran a crashplan backup and a couple of rsync of my home directory. I moved back to this disk some data. I'm running Debian Sid, 3.2.0-3-amd64 kernel and Btrfs v0.19 (0.19+20120328-8 according to dpkg), using XFCE4 and dolphin as a file manager. The usb drive is auto-mounting, and I'm accessing it with dolphin or console. I always use the "remove device safely" feature from dolphin before disconnecting the drive or shutting down my laptop. Unfotunately, I can't access anymore the drive : 75446.148236] usb 8-6: new high-speed USB device number 5 using ehci_hcd [75446.281867] usb 8-6: New USB device found, idVendor=13fd, idProduct=1840 [75446.281877] usb 8-6: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [75446.281884] usb 8-6: Product: USB 2.0 Drive [75446.281889] usb 8-6: Manufacturer: PI-239 [75446.281893] usb 8-6: SerialNumber: 533157464A39444233313232 [75446.282628] scsi9 : usb-storage 8-6:1.0 [75447.281188] scsi 9:0:0:0: Direct-Access PI-239 USB 2.0 Drive 1.08 PQ: 0 ANSI: 4 [75447.282934] sd 9:0:0:0: Attached scsi generic sg3 type 0 [75447.284169] sd 9:0:0:0: [sdc] 976773168 512-byte logical blocks: (500 GB/465 GiB) [75447.284728] sd 9:0:0:0: [sdc] Write Protect is off [75447.284736] sd 9:0:0:0: [sdc] Mode Sense: 23 00 00 00 [75447.285345] sd 9:0:0:0: [sdc] No Caching mode page present [75447.285352] sd 9:0:0:0: [sdc] Assuming drive cache: write through [75447.288349] sd 9:0:0:0: [sdc] No Caching mode page present [75447.288356] sd 9:0:0:0: [sdc] Assuming drive cache: write through [75447.309900] sdc: sdc1 [75447.312608] sd 9:0:0:0: [sdc] No Caching mode page present [75447.312612] sd 9:0:0:0: [sdc] Assuming drive cache: write through [75447.312615] sd 9:0:0:0: [sdc] Attached SCSI disk [75447.624772] device label DD_SEB devid 1 transid 390 /dev/sdc1 [75447.626348] btrfs: disk space caching is enabled [75447.666137] parent transid verify failed on 464265216 wanted 390 found 392 [75447.666146] parent transid verify failed on 464265216 wanted 390 found 392 [75447.666150] parent transid verify failed on 464265216 wanted 390 found 392 [75447.679199] btrfs: open_ctree failed btrfsck shows lots or problems (see https://dl.dropbox.com/u/747851/btrfsck.txt.gz 257K) I've looked at my logfiles from thurday, and I didn't see any error concerning btrfs. So I have three questions : 1) did I do something wrong ? 2) is there a way to recover the data on this disk ? 3) is btrfs a good choice for an external usb drive ? If you need more information, feel free to ask. Regards, Sebastien -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
