2 media
2 media
Another data corruption, fortunately not fatal, with btrfs. Two mirrored disks that have little activity. On the same server, Proxmox 9, there is also a ZFS pool (mirrored, more active). Same type of disks.
An employee mistakenly connected an electric heater to a socket protected by the UPS, and the server rebooted brutally.
Upon reboot, one of the two btrfs disks reported:
[ 167.015266] BTRFS error (device sdd): parent transid verify failed on 873906176 wanted 998679 found 998677
[ 167.017007] BTRFS error (device sdd): parent transid verify failed on 873906176 wanted 998679 found 998677
[ 167.052517] BTRFS error (device sdd): open_ctree failed mount: /btrfs: can't read superblock on /dev/sdd.
Result: unable to mount, even in degraded mode. The only way was to disconnect sdd and mount the other disk in degraded mode.
No issues with the ZFS pool.
Needless to say, I'm now copying the data to ZFS, and before tomorrow, these two disks will be a new ZFS pool.
Another data corruption, fortunately not fatal, with btrfs. Two mirrored disks that have little activity. On the same server, Proxmox 9, there is also a ZFS pool (mirrored, more active). Same type of disks.
An employee mistakenly connected an electric heater to a socket protected by the UPS, and the server rebooted brutally.
Upon reboot, one of the two btrfs disks reported:
[ 167.015266] BTRFS error (device sdd): parent transid verify failed on 873906176 wanted 998679 found 998677
[ 167.017007] BTRFS error (device sdd): parent transid verify failed on 873906176 wanted 998679 found 998677
[ 167.052517] BTRFS error (device sdd): open_ctree failed mount: /btrfs: can't read superblock on /dev/sdd.
Result: unable to mount, even in degraded mode. The only way was to disconnect sdd and mount the other disk in degraded mode.
No issues with the ZFS pool.
Needless to say, I'm now copying the data to ZFS, and before tomorrow, these two disks will be a new ZFS pool.
dch :flantifa: :flan_hacker:
boosted
Is anyone here using ZFS as their daily driver file system of choice on Gentoo? I like FreeBSD's ZFS integration and want to replicate some of that. It seems more polished than BTRFS.
Unfortunately, it looks like the Gentoo wiki is a bit out of date when it comes to ZFS knowledge.
Is anyone here using ZFS as their daily driver file system of choice on Gentoo? I like FreeBSD's ZFS integration and want to replicate some of that. It seems more polished than BTRFS.
Unfortunately, it looks like the Gentoo wiki is a bit out of date when it comes to ZFS knowledge.
#Linux #btrfsOH LE BOULET.
Je viens de me rendre compte que j'avais oublié de mettre le répertoire de torrents de mon NAS en NOCOW. Duh.
Correction:
- fermer le client torrent.
- créer un répertoire vide, le mettre en NOCOW (chattr +C nouveau)
- copier l'ancien répertoire dedans (cp -r -v --reflink=never ancien nouveau) (sinon ça gardera les blocs de données qui sont déjà en mode CoW)
I do think that one thing getting glossed over in the bcachefs kerfuffle is that the guy is probably right about #btrfs having remaining reliablity problems - granted I didn't go digging that hard, but I haven't found anywhere where the ~5 year old papers on btrfs becoming unrecoverable in many more underlying data corruption situations than ext4 were addressed, and certainly not with "many of those cases have been fixed."
The work on #EU_OS continues. In the last days, the Proof-of-Concept pages at https://eu-os.eu/poc/ have received a few updates on provisioning, branding and thoughts on user data backups. Open questions and issues are listed at https://gitlab.com/eu-os/eu-os.gitlab.io/-/issues
Please lend us your helping hand, reshare ♻️ and spread the word 🗣️!
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2/3 Topics #EU_OS needs help with:
1) What is the best way to backup user data for Linux EU OS users? https://gitlab.com/eu-os/eu-os.gitlab.io/-/issues/46 #borgbackup #btrfsbk #btrfs#nextcloud
2) How can unattended deployment with #foreman look like during pilot stage (thus without reconfiguring the network/DHCP yet)? https://gitlab.com/eu-os/eu-os.gitlab.io/-/issues/39 #foreman
3) How can a modern VPN provide extra security for people in home offices or on business trips? https://gitlab.com/eu-os/eu-os.gitlab.io/-/issues/47 #tailscale #headscale #rosenpass #wireguard #openvpn
@sun@Lars I decided against using btrfs for another couple years this past week after reading plenty of recent reports of its failure to recover from errors, along with its longstanding reputation of being unable to recover from many types of errors, see also https://www.usenix.org/system/files/atc19-jaffer.pdf
#btrfs would be a lot better if it *handled* errors rather than detecting them (which it's great at) and then blowing the fuck up.
deutrino
boosted
anybody know if #btrfs has improved this situation with regard to filesystem recoverability after medium errors common on consumer SSDs?
anybody know if #btrfs has improved this situation with regard to filesystem recoverability after medium errors common on consumer SSDs?
So after multiple power losses yesterday; and multiple instances of btrfs log tree corruption yesterday. AND swapping out kernels and simulating power failures this morning. I've got a lot of anecdotal evidence that Liquorix Kernel 6.15.5 has something odd going on with how either the timing of it writing it's log tree on my NVME, or it's failing to flush the write of the log tree on my NVME.
Lets just say, im going back to openSUSE's vanilla kernel for the rest of my openSUSE adventure. #linux #btrfs#openSUSE #Liquorix
dada
boosted
Des personnes par ici ont de l'expérience avec l'utilisation combinée de #bcache et #btrfs ?
Vous auriez des retours d'expérience et conseils / recommandations ?
C'est pertinent comme cache en lecture (surtout) si on a une asymétrie du style 500Go de SSD pour >10To de HDD ?
Il me semble que pour mon cas d'usage c'est la lecture aléatoire qui est la plus pénalisante.
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In snac on an ancient Raspberry Pi news, I switched from XFS to Btrfs and my memory pressure issues are now a thing of the past. As a bonus I can use snapshots for backups instead of taring up the many small files that snac generates (it has no traditional database).
I tried tuning various parameters but after some reading came to the conclusion that lots of small files with very little RAM is about the worst case scenario for XFS.
#linux #snac #btrfs
Des personnes par ici ont de l'expérience avec l'utilisation combinée de #bcache et #btrfs ?
Vous auriez des retours d'expérience et conseils / recommandations ?
C'est pertinent comme cache en lecture (surtout) si on a une asymétrie du style 500Go de SSD pour >10To de HDD ?
Il me semble que pour mon cas d'usage c'est la lecture aléatoire qui est la plus pénalisante.
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