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Some Users Have Been Hitting EXT4 File-System Corruption On Linux 4.19
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Haven't noticed any corruption problems using 4.19 under Mint. However I recently pulled my Radeon 5450 card and put in a GCN 1.0 HD7770 instead. I added the kernel switches to turn off radeon driver and turn on amdgpu driver for SI and CI cards. After that I can boot up installed 4.15, 4.17,4.18 kernels and they're all fine and inxi -xxxG shows the amdgpu driver active for the card with working Vulkan. Booting up 4.19 causes Cinnamon to complain that it's running in software mode, and inxi -xxxG shows that neither amdgpu nor radeon drivers are loaded and it's using vesa driver.
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Originally posted by AndyChow View PostSometimes, you just can't fix a bad design. BTRFS is COW, but not COW done right. It is very fast, I'll give it that, and when it works, it works great. But spectacular castastrophic failures still happen all the time. Just ask the BTRFS devs on freenode.
Luckily, when originally transferring those video files, I remembered how technology tries to screw me over, so I copied the files in two other places.
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Originally posted by jpg44 View Post
A purely COW filesystem does not use a journal so may be more resiliant to the problem since none of the existing disk structures are modified at all, it can read the existing disk structures and write modified versions to new locations. This allows the old unmodified structures to be used for recovery. Not sure if btrfs actually can do this.
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Originally posted by ALRBP View PostAnd I was thinking that maybe switching back to EXT4 (+HW RAID/MDADM) was safer than keeping Btrfs (no RAID5/6)…
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Originally posted by Weasel View PostRolling Release must be so awesome to force this kind of breakage on you right?
I have a couple systems still using 4.14 LTS. On Manjaro, the kernel major/minor version isn't updated unless you specifically install the new version. Only point releases are automatically updated (i.e. 4.14.1 to 4.14.2).
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Guest repliedOriginally posted by bitman View Post
Hah i came here just after realizing that. Linus becomes nice and kernel goes to shitz.
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Guest repliedOriginally posted by bitman View PostI tend to believe corruption really does come from outside of ext4 driver. 4.19 is a total wreck of a release. People report all kinds of problems. I myself was getting random freezes every few hours. I do not recall such a disastrous release.
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Originally posted by AndyChow View PostI've experienced corruption on a few hundred files, when switching from multi-queue block deadline to mq-blk none. Might not be related to mq-blk, but it happened in the past 3 weeks. I have full backups, so it's not that bad. What's terrible is that most errors I only found because I keep checksum log audits. If someone doesn't, and got some corruption, they might never know it.
I've since re-migrated to btrfs, but hey, with my luck, that will get corrupted also. I actually switched from btrfs to ext4 because I was tired of unfixable problems btrfs would throw up every few months when running a scrub. Can't wait for bcachefs.
A purely COW filesystem does not use a journal so may be more resiliant to the problem since none of the existing disk structures are modified at all, it can read the existing disk structures and write modified versions to new locations. This allows the old unmodified structures to be used for recovery. Not sure if btrfs actually can do this.Last edited by jpg44; 28 November 2018, 03:45 PM.
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